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[TD-1961]<fix> modify return when call taos_query()

This commit is contained in:
Hui Li 2020-11-06 09:48:57 +08:00
parent d553f4083a
commit 73b23e8b8d
1 changed files with 47 additions and 12 deletions
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59
tests/examples/c/demo.c
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@ -22,6 +22,34 @@
#include <inttypes.h>
#include <taos.h> // TAOS header file
static void queryDB(TAOS *taos, char *command) {
int i;
TAOS_RES *pSql = NULL;
int32_t code = -1;
for (i = 0; i < 5; i++) {
if (NULL != pSql) {
taos_free_result(pSql);
pSql = NULL;
}
pSql = taos_query(taos, command);
code = taos_errno(pSql);
if (0 == code) {
break;
}
}
if (code != 0) {
fprintf(stderr, "Failed to run %s, reason: %s\n", command, taos_errstr(pSql));
taos_free_result(pSql);
taos_close(taos);
exit(EXIT_FAILURE);
}
taos_free_result(pSql);
}
int main(int argc, char *argv[]) {
TAOS * taos;
char qstr[1024];
@ -44,22 +72,26 @@ int main(int argc, char *argv[]) {
printf("success to connect to server\n");
taos_query(taos, "drop database demo");
//taos_query(taos, "drop database demo");
queryDB(taos, "drop database if exists demo");
result = taos_query(taos, "create database demo");
if (result == NULL) {
printf("failed to create database, reason:%s\n", "null result"/*taos_errstr(taos)*/);
exit(1);
}
//result = taos_query(taos, "create database demo");
//if (result == NULL) {
// printf("failed to create database, reason:%s\n", "null result"/*taos_errstr(taos)*/);
// exit(1);
//}
queryDB(taos, "create database demo");
printf("success to create database\n");
taos_query(taos, "use demo");
//taos_query(taos, "use demo");
queryDB(taos, "use demo");
// create table
if (taos_query(taos, "create table m1 (ts timestamp, ti tinyint, si smallint, i int, bi bigint, f float, d double, b binary(10))") == 0) {
printf("failed to create table, reason:%s\n", taos_errstr(result));
exit(1);
}
//if (taos_query(taos, "create table m1 (ts timestamp, ti tinyint, si smallint, i int, bi bigint, f float, d double, b binary(10))") == 0) {
// printf("failed to create table, reason:%s\n", taos_errstr(result));
// exit(1);
//}
queryDB(taos, "create table m1 (ts timestamp, ti tinyint, si smallint, i int, bi bigint, f float, d double, b binary(10))");
printf("success to create table\n");
// sleep for one second to make sure table is created on data node
@ -80,8 +112,10 @@ int main(int argc, char *argv[]) {
printf("insert row: %i\n", i);
} else {
printf("failed to insert row: %i, reason:%s\n", i, "null result"/*taos_errstr(result)*/);
taos_free_result(result);
exit(1);
}
taos_free_result(result);
//sleep(1);
}
@ -91,7 +125,8 @@ int main(int argc, char *argv[]) {
sprintf(qstr, "SELECT * FROM m1");
result = taos_query(taos, qstr);
if (result == NULL || taos_errno(result) != 0) {
printf("failed to select, reason:%s\n", taos_errstr(result));
printf("failed to select, reason:%s\n", taos_errstr(result));
taos_free_result(result);
exit(1);
}