129 lines
3.9 KiB
C
129 lines
3.9 KiB
C
/*
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* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
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*
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* This program is free software: you can use, redistribute, and/or modify
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* it under the terms of the GNU Affero General Public License, version 3
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* or later ("AGPL"), as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <assert.h>
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#include <stdio.h>
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#include <time.h>
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#include "taos.h"
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#include "types.h"
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int buildStable(TAOS* pConn, TAOS_RES* pRes) {
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pRes = taos_query(pConn,
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"CREATE STABLE `meters` (`ts` TIMESTAMP, `current` INT, `voltage` INT, `phase` FLOAT) TAGS "
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"(`groupid` INT, `location` VARCHAR(16))");
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if (taos_errno(pRes) != 0) {
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printf("failed to create super table meters, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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taos_free_result(pRes);
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pRes = taos_query(pConn, "create table d0 using meters tags(1, 'San Francisco')");
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if (taos_errno(pRes) != 0) {
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printf("failed to create child table d0, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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taos_free_result(pRes);
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pRes = taos_query(pConn, "insert into d0 (ts, current) values (now, 120)");
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if (taos_errno(pRes) != 0) {
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printf("failed to insert into table d0, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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taos_free_result(pRes);
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pRes = taos_query(pConn, "create table d1 using meters tags(2, 'San Francisco')");
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if (taos_errno(pRes) != 0) {
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printf("failed to create child table d1, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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taos_free_result(pRes);
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pRes = taos_query(pConn, "create table d2 using meters tags(3, 'San Francisco')");
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if (taos_errno(pRes) != 0) {
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printf("failed to create child table d2, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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taos_free_result(pRes);
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return 0;
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}
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int32_t init_env() {
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TAOS* pConn = taos_connect("localhost", "root", "taosdata", NULL, 0);
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if (pConn == NULL) {
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return -1;
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}
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TAOS_RES* pRes = taos_query(pConn, "drop database if exists db_raw");
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if (taos_errno(pRes) != 0) {
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printf("error in drop db_taosx, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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taos_free_result(pRes);
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pRes = taos_query(pConn, "create database if not exists db_raw vgroups 2");
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if (taos_errno(pRes) != 0) {
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printf("error in create db_taosx, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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taos_free_result(pRes);
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pRes = taos_query(pConn, "use db_raw");
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if (taos_errno(pRes) != 0) {
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printf("error in create db_taosx, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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taos_free_result(pRes);
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buildStable(pConn, pRes);
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pRes = taos_query(pConn, "select * from d0");
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if (taos_errno(pRes) != 0) {
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printf("error in drop db_taosx, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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void *data = NULL;
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int32_t numOfRows = 0;
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int error_code = taos_fetch_raw_block(pRes, &numOfRows, &data);
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ASSERT(error_code == 0);
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ASSERT(numOfRows == 1);
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taos_write_raw_block(pConn, numOfRows, data, "d1");
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taos_free_result(pRes);
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pRes = taos_query(pConn, "select ts,phase from d0");
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if (taos_errno(pRes) != 0) {
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printf("error in drop db_taosx, reason:%s\n", taos_errstr(pRes));
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return -1;
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}
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error_code = taos_fetch_raw_block(pRes, &numOfRows, &data);
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ASSERT(error_code == 0);
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ASSERT(numOfRows == 1);
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int numFields = taos_num_fields(pRes);
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TAOS_FIELD *fields = taos_fetch_fields(pRes);
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taos_write_raw_block_with_fields(pConn, numOfRows, data, "d2", fields, numFields);
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taos_free_result(pRes);
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taos_close(pConn);
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return 0;
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}
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int main(int argc, char* argv[]) {
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if (init_env() < 0) {
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return -1;
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}
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}
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