update c sample code
This commit is contained in:
parent
59a91bb86c
commit
8aa9fb82d3
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@ -43,8 +43,7 @@ static int DemoCreateDB() {
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TAOS_RES *result = taos_query(taos, "CREATE DATABASE IF NOT EXISTS power");
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to create database power, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, code,
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taos_errstr(result));
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printf("Failed to create database power, ErrCode: 0x%x, ErrMessage: %s.\n", code, taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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@ -59,8 +58,7 @@ static int DemoCreateDB() {
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result = taos_query(taos, sql);
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to create stable power.meters, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s\n.", host, port, code,
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taos_errstr(result));
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printf("Failed to create stable power.meters, ErrCode: 0x%x, ErrMessage: %s\n.", code, taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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@ -23,52 +23,52 @@
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#include "taos.h"
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static int DemoInsertData() {
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// ANCHOR: insert_data
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const char *host = "localhost";
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const char *user = "root";
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const char *password = "taosdata";
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uint16_t port = 6030;
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int code = 0;
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// ANCHOR: insert_data
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const char *host = "localhost";
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const char *user = "root";
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const char *password = "taosdata";
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uint16_t port = 6030;
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int code = 0;
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// connect
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TAOS *taos = taos_connect(host, user, password, NULL, port);
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if (taos == NULL) {
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printf("Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL), taos_errstr(NULL));
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taos_cleanup();
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return -1;
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}
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// connect
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TAOS *taos = taos_connect(host, user, password, NULL, port);
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if (taos == NULL) {
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printf("Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL),
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taos_errstr(NULL));
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taos_cleanup();
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return -1;
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}
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// insert data, please make sure the database and table are already created
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const char* sql = "INSERT INTO " \
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"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') " \
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"VALUES " \
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"(NOW + 1a, 10.30000, 219, 0.31000) " \
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"(NOW + 2a, 12.60000, 218, 0.33000) " \
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"(NOW + 3a, 12.30000, 221, 0.31000) " \
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"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') " \
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"VALUES " \
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"(NOW + 1a, 10.30000, 218, 0.25000) ";
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TAOS_RES *result = taos_query(taos, sql);
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to insert data to power.meters, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s\n.", host, port, code, taos_errstr(result));
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// insert data, please make sure the database and table are already created
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const char *sql =
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"INSERT INTO "
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"power.d1001 USING power.meters TAGS(2,'California.SanFrancisco') "
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"VALUES "
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"(NOW + 1a, 10.30000, 219, 0.31000) "
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"(NOW + 2a, 12.60000, 218, 0.33000) "
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"(NOW + 3a, 12.30000, 221, 0.31000) "
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"power.d1002 USING power.meters TAGS(3, 'California.SanFrancisco') "
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"VALUES "
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"(NOW + 1a, 10.30000, 218, 0.25000) ";
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TAOS_RES *result = taos_query(taos, sql);
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to insert data to power.meters, ErrCode: 0x%x, ErrMessage: %s\n.", code, taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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taos_free_result(result);
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// you can check affectedRows here
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int rows = taos_affected_rows(result);
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printf("Successfully inserted %d rows into power.meters.\n", rows);
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// close & clean
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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taos_free_result(result);
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// you can check affectedRows here
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int rows = taos_affected_rows(result);
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printf("Successfully inserted %d rows into power.meters.\n", rows);
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// close & clean
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taos_close(taos);
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taos_cleanup();
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return 0;
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// ANCHOR_END: insert_data
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return 0;
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// ANCHOR_END: insert_data
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}
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int main(int argc, char *argv[]) {
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return DemoInsertData();
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}
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int main(int argc, char *argv[]) { return DemoInsertData(); }
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@ -22,61 +22,58 @@
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#include <string.h>
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#include "taos.h"
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static int DemoQueryData() {
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// ANCHOR: query_data
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const char *host = "localhost";
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const char *user = "root";
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const char *password = "taosdata";
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uint16_t port = 6030;
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int code = 0;
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// ANCHOR: query_data
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const char *host = "localhost";
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const char *user = "root";
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const char *password = "taosdata";
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uint16_t port = 6030;
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int code = 0;
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// connect
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TAOS *taos = taos_connect(host, user, password, NULL, port);
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if (taos == NULL) {
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printf("Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL), taos_errstr(NULL));
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taos_cleanup();
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return -1;
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}
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// connect
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TAOS *taos = taos_connect(host, user, password, NULL, port);
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if (taos == NULL) {
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printf("Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL),
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taos_errstr(NULL));
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taos_cleanup();
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return -1;
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}
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// query data, please make sure the database and table are already created
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const char *sql = "SELECT ts, current, location FROM power.meters limit 100";
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TAOS_RES *result = taos_query(taos, sql);
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to query data from power.meters, sql: %s, ErrCode: 0x%x, ErrMessage: %s\n.", sql, code,
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taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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TAOS_ROW row = NULL;
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int rows = 0;
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int num_fields = taos_field_count(result);
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TAOS_FIELD *fields = taos_fetch_fields(result);
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// query data, please make sure the database and table are already created
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const char* sql = "SELECT ts, current, location FROM power.meters limit 100";
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TAOS_RES *result = taos_query(taos, sql);
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to query data from power.meters, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s\n.", host, port, code, taos_errstr(result));
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printf("fields: %d\n", num_fields);
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printf("sql: %s, result:\n", sql);
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// fetch the records row by row
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while ((row = taos_fetch_row(result))) {
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char temp[1024] = {0};
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rows++;
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taos_print_row(temp, row, fields, num_fields);
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printf("%s\n", temp);
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}
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printf("total rows: %d\n", rows);
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taos_free_result(result);
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// close & clean
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taos_close(taos);
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taos_cleanup();
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return -1;
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return 0;
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// ANCHOR_END: query_data
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}
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TAOS_ROW row = NULL;
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int rows = 0;
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int num_fields = taos_field_count(result);
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TAOS_FIELD *fields = taos_fetch_fields(result);
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printf("fields: %d\n", num_fields);
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printf("sql: %s, result:\n", sql);
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// fetch the records row by row
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while ((row = taos_fetch_row(result))) {
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char temp[1024] = {0};
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rows++;
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taos_print_row(temp, row, fields, num_fields);
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printf("%s\n", temp);
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}
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printf("total rows: %d\n", rows);
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taos_free_result(result);
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// close & clean
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taos_close(taos);
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taos_cleanup();
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return 0;
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// ANCHOR_END: query_data
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}
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int main(int argc, char *argv[]) {
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return DemoQueryData();
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}
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int main(int argc, char *argv[]) { return DemoQueryData(); }
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@ -21,114 +21,119 @@
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#include <string.h>
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#include "taos.h"
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static int DemoSmlInsert() {
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// ANCHOR: schemaless
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const char *host = "localhost";
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const char *user = "root";
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const char *password = "taosdata";
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uint16_t port = 6030;
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int code = 0;
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// ANCHOR: schemaless
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const char *host = "localhost";
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const char *user = "root";
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const char *password = "taosdata";
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uint16_t port = 6030;
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int code = 0;
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// connect
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TAOS *taos = taos_connect(host, user, password, NULL, port);
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if (taos == NULL) {
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printf("Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL), taos_errstr(NULL));
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taos_cleanup();
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return -1;
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}
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// connect
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TAOS *taos = taos_connect(host, user, password, NULL, port);
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if (taos == NULL) {
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printf("Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL),
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taos_errstr(NULL));
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taos_cleanup();
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return -1;
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}
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// create database
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TAOS_RES *result = taos_query(taos, "CREATE DATABASE IF NOT EXISTS power");
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to create database power, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, code, taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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taos_free_result(result);
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printf("Create database power successfully.\n");
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// create database
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TAOS_RES *result = taos_query(taos, "CREATE DATABASE IF NOT EXISTS power");
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to create database power, ErrCode: 0x%x, ErrMessage: %s.\n", code, taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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taos_free_result(result);
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printf("Create database power successfully.\n");
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// use database
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result = taos_query(taos, "USE power");
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to execute use power, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s\n.", host, port, code, taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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taos_free_result(result);
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// use database
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result = taos_query(taos, "USE power");
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to execute use power, ErrCode: 0x%x, ErrMessage: %s\n.", code, taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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taos_free_result(result);
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// schemaless demo data
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char * line_demo = "meters,groupid=2,location=California.SanFrancisco current=10.3000002f64,voltage=219i32,phase=0.31f64 1626006833639";
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char * telnet_demo = "metric_telnet 1707095283260 4 host=host0 interface=eth0";
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char * json_demo = "{\"metric\": \"metric_json\",\"timestamp\": 1626846400,\"value\": 10.3, \"tags\": {\"groupid\": 2, \"location\": \"California.SanFrancisco\", \"id\": \"d1001\"}}";
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// schemaless demo data
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char *line_demo =
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"meters,groupid=2,location=California.SanFrancisco current=10.3000002f64,voltage=219i32,phase=0.31f64 "
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"1626006833639";
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char *telnet_demo = "metric_telnet 1707095283260 4 host=host0 interface=eth0";
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char *json_demo =
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"{\"metric\": \"metric_json\",\"timestamp\": 1626846400,\"value\": 10.3, \"tags\": {\"groupid\": 2, "
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"\"location\": \"California.SanFrancisco\", \"id\": \"d1001\"}}";
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// influxdb line protocol
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char *lines[] = {line_demo};
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result = taos_schemaless_insert(taos, lines, 1, TSDB_SML_LINE_PROTOCOL, TSDB_SML_TIMESTAMP_MILLI_SECONDS);
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to insert schemaless line data, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s\n.", host, port, code, taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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// influxdb line protocol
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char *lines[] = {line_demo};
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result = taos_schemaless_insert(taos, lines, 1, TSDB_SML_LINE_PROTOCOL, TSDB_SML_TIMESTAMP_MILLI_SECONDS);
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to insert schemaless line data, data: %s, ErrCode: 0x%x, ErrMessage: %s\n.", line_demo, code,
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taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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int rows = taos_affected_rows(result);
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printf("Insert %d rows of schemaless line data successfully.\n", rows);
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taos_free_result(result);
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int rows = taos_affected_rows(result);
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printf("Insert %d rows of schemaless line data successfully.\n", rows);
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taos_free_result(result);
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// opentsdb telnet protocol
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char *telnets[] = {telnet_demo};
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result = taos_schemaless_insert(taos, telnets, 1, TSDB_SML_TELNET_PROTOCOL, TSDB_SML_TIMESTAMP_MILLI_SECONDS);
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to insert schemaless telnet data, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s\n.", host, port, code, taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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// opentsdb telnet protocol
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char *telnets[] = {telnet_demo};
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result = taos_schemaless_insert(taos, telnets, 1, TSDB_SML_TELNET_PROTOCOL, TSDB_SML_TIMESTAMP_MILLI_SECONDS);
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code = taos_errno(result);
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if (code != 0) {
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printf("Failed to insert schemaless telnet data, data: %s, ErrCode: 0x%x, ErrMessage: %s\n.", telnet_demo, code,
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taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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rows = taos_affected_rows(result);
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printf("Insert %d rows of schemaless telnet data successfully.\n", rows);
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taos_free_result(result);
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rows = taos_affected_rows(result);
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printf("Insert %d rows of schemaless telnet data successfully.\n", rows);
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taos_free_result(result);
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// opentsdb json protocol
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char *jsons[1] = {0};
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// allocate memory for json data. can not use static memory.
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jsons[0] = malloc(1024);
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if (jsons[0] == NULL) {
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printf("Failed to allocate memory\n");
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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(void)strncpy(jsons[0], json_demo, 1023);
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result = taos_schemaless_insert(taos, jsons, 1, TSDB_SML_JSON_PROTOCOL, TSDB_SML_TIMESTAMP_NOT_CONFIGURED);
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code = taos_errno(result);
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if (code != 0) {
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// opentsdb json protocol
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char *jsons[1] = {0};
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// allocate memory for json data. can not use static memory.
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jsons[0] = malloc(1024);
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if (jsons[0] == NULL) {
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printf("Failed to allocate memory\n");
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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(void)strncpy(jsons[0], json_demo, 1023);
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result = taos_schemaless_insert(taos, jsons, 1, TSDB_SML_JSON_PROTOCOL, TSDB_SML_TIMESTAMP_NOT_CONFIGURED);
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code = taos_errno(result);
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if (code != 0) {
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free(jsons[0]);
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printf("Failed to insert schemaless json data, Server: %s, ErrCode: 0x%x, ErrMessage: %s\n.", json_demo, code,
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taos_errstr(result));
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taos_close(taos);
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taos_cleanup();
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return -1;
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}
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free(jsons[0]);
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printf("Failed to insert schemaless json data, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s\n.", host, port, code, taos_errstr(result));
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|
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rows = taos_affected_rows(result);
|
||||
printf("Insert %d rows of schemaless json data successfully.\n", rows);
|
||||
taos_free_result(result);
|
||||
|
||||
// close & clean
|
||||
taos_close(taos);
|
||||
taos_cleanup();
|
||||
return -1;
|
||||
}
|
||||
free(jsons[0]);
|
||||
|
||||
rows = taos_affected_rows(result);
|
||||
printf("Insert %d rows of schemaless json data successfully.\n", rows);
|
||||
taos_free_result(result);
|
||||
|
||||
// close & clean
|
||||
taos_close(taos);
|
||||
taos_cleanup();
|
||||
return 0;
|
||||
// ANCHOR_END: schemaless
|
||||
return 0;
|
||||
// ANCHOR_END: schemaless
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[]) {
|
||||
return DemoSmlInsert();
|
||||
}
|
||||
int main(int argc, char *argv[]) { return DemoSmlInsert(); }
|
||||
|
|
|
@ -41,14 +41,15 @@ typedef struct {
|
|||
} ConsumerConfig;
|
||||
|
||||
void* prepare_data(void* arg) {
|
||||
const char *host = "localhost";
|
||||
const char *user = "root";
|
||||
const char *password = "taosdata";
|
||||
uint16_t port = 6030;
|
||||
int code = 0;
|
||||
TAOS *pConn = taos_connect(host, user, password, NULL, port);
|
||||
const char* host = "localhost";
|
||||
const char* user = "root";
|
||||
const char* password = "taosdata";
|
||||
uint16_t port = 6030;
|
||||
int code = 0;
|
||||
TAOS* pConn = taos_connect(host, user, password, NULL, port);
|
||||
if (pConn == NULL) {
|
||||
fprintf(stderr, "Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL), taos_errstr(NULL));
|
||||
fprintf(stderr, "Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL),
|
||||
taos_errstr(NULL));
|
||||
taos_cleanup();
|
||||
return NULL;
|
||||
}
|
||||
|
@ -68,7 +69,8 @@ void* prepare_data(void* arg) {
|
|||
pRes = taos_query(pConn, buf);
|
||||
code = taos_errno(pRes);
|
||||
if (code != 0) {
|
||||
fprintf(stderr, "Failed to insert data to power.meters, ErrCode: 0x%x, ErrMessage: %s.\n", code, taos_errstr(pRes));
|
||||
fprintf(stderr, "Failed to insert data to power.meters, ErrCode: 0x%x, ErrMessage: %s.\n", code,
|
||||
taos_errstr(pRes));
|
||||
}
|
||||
taos_free_result(pRes);
|
||||
sleep(1);
|
||||
|
@ -115,14 +117,15 @@ static int32_t msg_process(TAOS_RES* msg) {
|
|||
// ANCHOR_END: msg_process
|
||||
|
||||
static int32_t init_env() {
|
||||
const char *host = "localhost";
|
||||
const char *user = "root";
|
||||
const char *password = "taosdata";
|
||||
uint16_t port = 6030;
|
||||
int code = 0;
|
||||
TAOS *pConn = taos_connect(host, user, password, NULL, port);
|
||||
const char* host = "localhost";
|
||||
const char* user = "root";
|
||||
const char* password = "taosdata";
|
||||
uint16_t port = 6030;
|
||||
int code = 0;
|
||||
TAOS* pConn = taos_connect(host, user, password, NULL, port);
|
||||
if (pConn == NULL) {
|
||||
fprintf(stderr, "Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL), taos_errstr(NULL));
|
||||
fprintf(stderr, "Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL),
|
||||
taos_errstr(NULL));
|
||||
taos_cleanup();
|
||||
return -1;
|
||||
}
|
||||
|
@ -177,15 +180,16 @@ END:
|
|||
|
||||
int32_t create_topic() {
|
||||
fprintf(stdout, "Create topic.\n");
|
||||
TAOS_RES* pRes;
|
||||
const char *host = "localhost";
|
||||
const char *user = "root";
|
||||
const char *password = "taosdata";
|
||||
uint16_t port = 6030;
|
||||
int code = 0;
|
||||
TAOS *pConn = taos_connect(host, user, password, NULL, port);
|
||||
TAOS_RES* pRes;
|
||||
const char* host = "localhost";
|
||||
const char* user = "root";
|
||||
const char* password = "taosdata";
|
||||
uint16_t port = 6030;
|
||||
int code = 0;
|
||||
TAOS* pConn = taos_connect(host, user, password, NULL, port);
|
||||
if (pConn == NULL) {
|
||||
fprintf(stderr, "Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL), taos_errstr(NULL));
|
||||
fprintf(stderr, "Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL),
|
||||
taos_errstr(NULL));
|
||||
taos_cleanup();
|
||||
return -1;
|
||||
}
|
||||
|
@ -348,7 +352,8 @@ void consume_repeatly(tmq_t* tmq) {
|
|||
|
||||
code = tmq_offset_seek(tmq, topic_name, p->vgId, p->begin);
|
||||
if (code != 0) {
|
||||
fprintf(stderr, "Failed to seek assignment %d to beginning %ld, ErrCode: 0x%x, ErrMessage: %s.\n", i, p->begin, code, tmq_err2str(code));
|
||||
fprintf(stderr, "Failed to seek assignment %d to beginning %ld, ErrCode: 0x%x, ErrMessage: %s.\n", i, p->begin,
|
||||
code, tmq_err2str(code));
|
||||
} else {
|
||||
fprintf(stdout, "Seek assignment %d to beginning %ld successfully.\n", i, p->begin);
|
||||
}
|
||||
|
@ -417,25 +422,25 @@ int main(int argc, char* argv[]) {
|
|||
return -1;
|
||||
}
|
||||
|
||||
ConsumerConfig config = {
|
||||
.enable_auto_commit = "true",
|
||||
.auto_commit_interval_ms = "1000",
|
||||
.group_id = "group1",
|
||||
.client_id = "client1",
|
||||
.td_connect_host = "localhost",
|
||||
.td_connect_port = "6030",
|
||||
.td_connect_user = "root",
|
||||
.td_connect_pass = "taosdata",
|
||||
.auto_offset_reset = "latest"
|
||||
};
|
||||
ConsumerConfig config = {.enable_auto_commit = "true",
|
||||
.auto_commit_interval_ms = "1000",
|
||||
.group_id = "group1",
|
||||
.client_id = "client1",
|
||||
.td_connect_host = "localhost",
|
||||
.td_connect_port = "6030",
|
||||
.td_connect_user = "root",
|
||||
.td_connect_pass = "taosdata",
|
||||
.auto_offset_reset = "latest"};
|
||||
|
||||
// ANCHOR: create_consumer_2
|
||||
tmq_t* tmq = build_consumer(&config);
|
||||
if (NULL == tmq) {
|
||||
fprintf(stderr, "Failed to create native consumer, host: %s, groupId: %s, , clientId: %s.\n", config.td_connect_host, config.group_id, config.client_id);
|
||||
fprintf(stderr, "Failed to create native consumer, host: %s, groupId: %s, , clientId: %s.\n",
|
||||
config.td_connect_host, config.group_id, config.client_id);
|
||||
return -1;
|
||||
} else {
|
||||
fprintf(stdout, "Create consumer successfully, host: %s, groupId: %s, , clientId: %s.\n", config.td_connect_host, config.group_id, config.client_id);
|
||||
fprintf(stdout, "Create consumer successfully, host: %s, groupId: %s, , clientId: %s.\n", config.td_connect_host,
|
||||
config.group_id, config.client_id);
|
||||
}
|
||||
|
||||
// ANCHOR_END: create_consumer_2
|
||||
|
|
|
@ -23,59 +23,57 @@
|
|||
#include "taos.h"
|
||||
|
||||
static int DemoWithReqId() {
|
||||
// ANCHOR: with_reqid
|
||||
const char *host = "localhost";
|
||||
const char *user = "root";
|
||||
const char *password = "taosdata";
|
||||
uint16_t port = 6030;
|
||||
int code = 0;
|
||||
// ANCHOR: with_reqid
|
||||
const char *host = "localhost";
|
||||
const char *user = "root";
|
||||
const char *password = "taosdata";
|
||||
uint16_t port = 6030;
|
||||
int code = 0;
|
||||
|
||||
// connect
|
||||
TAOS *taos = taos_connect(host, user, password, NULL, port);
|
||||
if (taos == NULL) {
|
||||
printf("Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL), taos_errstr(NULL));
|
||||
taos_cleanup();
|
||||
return -1;
|
||||
}
|
||||
// connect
|
||||
TAOS *taos = taos_connect(host, user, password, NULL, port);
|
||||
if (taos == NULL) {
|
||||
printf("Failed to connect to %s:%hu, ErrCode: 0x%x, ErrMessage: %s.\n", host, port, taos_errno(NULL),
|
||||
taos_errstr(NULL));
|
||||
taos_cleanup();
|
||||
return -1;
|
||||
}
|
||||
|
||||
const char *sql = "SELECT ts, current, location FROM power.meters limit 1";
|
||||
// query data with reqid
|
||||
long reqid = 3L;
|
||||
TAOS_RES *result = taos_query_with_reqid(taos, sql, reqid);
|
||||
code = taos_errno(result);
|
||||
if (code != 0) {
|
||||
printf("Failed to execute sql with reqId: %ld, Server: %s:%hu, ErrCode: 0x%x, ErrMessage: %s\n.", reqid, host, port, code, taos_errstr(result));
|
||||
const char *sql = "SELECT ts, current, location FROM power.meters limit 1";
|
||||
// query data with reqid
|
||||
long reqid = 3L;
|
||||
TAOS_RES *result = taos_query_with_reqid(taos, sql, reqid);
|
||||
code = taos_errno(result);
|
||||
if (code != 0) {
|
||||
printf("Failed to execute sql with reqId: %ld, ErrCode: 0x%x, ErrMessage: %s\n.", reqid, code, taos_errstr(result));
|
||||
taos_close(taos);
|
||||
taos_cleanup();
|
||||
return -1;
|
||||
}
|
||||
|
||||
TAOS_ROW row = NULL;
|
||||
int rows = 0;
|
||||
int num_fields = taos_field_count(result);
|
||||
TAOS_FIELD *fields = taos_fetch_fields(result);
|
||||
|
||||
printf("fields: %d\n", num_fields);
|
||||
printf("sql: %s, result:\n", sql);
|
||||
|
||||
// fetch the records row by row
|
||||
while ((row = taos_fetch_row(result))) {
|
||||
char temp[1024] = {0};
|
||||
rows++;
|
||||
taos_print_row(temp, row, fields, num_fields);
|
||||
printf("%s\n", temp);
|
||||
}
|
||||
printf("total rows: %d\n", rows);
|
||||
taos_free_result(result);
|
||||
|
||||
// close & clean
|
||||
taos_close(taos);
|
||||
taos_cleanup();
|
||||
return -1;
|
||||
}
|
||||
|
||||
TAOS_ROW row = NULL;
|
||||
int rows = 0;
|
||||
int num_fields = taos_field_count(result);
|
||||
TAOS_FIELD *fields = taos_fetch_fields(result);
|
||||
|
||||
printf("fields: %d\n", num_fields);
|
||||
printf("sql: %s, result:\n", sql);
|
||||
|
||||
// fetch the records row by row
|
||||
while ((row = taos_fetch_row(result))) {
|
||||
char temp[1024] = {0};
|
||||
rows++;
|
||||
taos_print_row(temp, row, fields, num_fields);
|
||||
printf("%s\n", temp);
|
||||
}
|
||||
printf("total rows: %d\n", rows);
|
||||
taos_free_result(result);
|
||||
|
||||
// close & clean
|
||||
taos_close(taos);
|
||||
taos_cleanup();
|
||||
return 0;
|
||||
// ANCHOR_END: with_reqid
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[]) {
|
||||
return DemoWithReqId();
|
||||
return 0;
|
||||
// ANCHOR_END: with_reqid
|
||||
}
|
||||
|
||||
int main(int argc, char *argv[]) { return DemoWithReqId(); }
|
||||
|
|
Loading…
Reference in New Issue