Elgato_dark/TDengine
1
0
Fork 0
mirror of https://github.com/taosdata/TDengine synced 2026-05-24 10:09:01 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 4
TDengine/examples/c/prepare.c
Shuduo Sang efb00db77d
[TD-13408]<test>: move example back (#10191) 
* [TD-13408]<test>: move examples back

* [TD-13408]<test>: move examples back
2022-02-10 16:19:55 +08:00

1422 lines
42 KiB
C
Raw Permalink Blame History

// TAOS standard API example. The same syntax as MySQL, but only a subet
// to compile: gcc -o prepare prepare.c -ltaos
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <taos.h>
#include <unistd.h>
void taosMsleep(int mseconds);
void verify_prepare(TAOS* taos) {
TAOS_RES* result = taos_query(taos, "drop database if exists test;");
taos_free_result(result);
usleep(100000);
result = taos_query(taos, "create database test;");
int code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create database, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
exit(EXIT_FAILURE);
}
taos_free_result(result);
usleep(100000);
taos_select_db(taos, "test");
// create table
const char* sql =
"create table m1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin "
"binary(40), blob nchar(10), u1 tinyint unsigned, u2 smallint unsigned, u4 int unsigned, u8 bigint unsigned)";
result = taos_query(taos, sql);
code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create table, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
exit(EXIT_FAILURE);
}
taos_free_result(result);
// insert 10 records
struct {
int64_t ts;
int8_t b;
int8_t v1;
int16_t v2;
int32_t v4;
int64_t v8;
float f4;
double f8;
char bin[40];
char blob[80];
uint8_t u1;
uint16_t u2;
uint32_t u4;
uint64_t u8;
} v = {0};
TAOS_STMT* stmt = taos_stmt_init(taos);
TAOS_BIND params[14];
params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
params[0].buffer_length = sizeof(v.ts);
params[0].buffer = &v.ts;
params[0].length = &params[0].buffer_length;
params[0].is_null = NULL;
params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
params[1].buffer_length = sizeof(v.b);
params[1].buffer = &v.b;
params[1].length = &params[1].buffer_length;
params[1].is_null = NULL;
params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
params[2].buffer_length = sizeof(v.v1);
params[2].buffer = &v.v1;
params[2].length = &params[2].buffer_length;
params[2].is_null = NULL;
params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
params[3].buffer_length = sizeof(v.v2);
params[3].buffer = &v.v2;
params[3].length = &params[3].buffer_length;
params[3].is_null = NULL;
params[4].buffer_type = TSDB_DATA_TYPE_INT;
params[4].buffer_length = sizeof(v.v4);
params[4].buffer = &v.v4;
params[4].length = &params[4].buffer_length;
params[4].is_null = NULL;
params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
params[5].buffer_length = sizeof(v.v8);
params[5].buffer = &v.v8;
params[5].length = &params[5].buffer_length;
params[5].is_null = NULL;
params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
params[6].buffer_length = sizeof(v.f4);
params[6].buffer = &v.f4;
params[6].length = &params[6].buffer_length;
params[6].is_null = NULL;
params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
params[7].buffer_length = sizeof(v.f8);
params[7].buffer = &v.f8;
params[7].length = &params[7].buffer_length;
params[7].is_null = NULL;
params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
params[8].buffer_length = sizeof(v.bin);
params[8].buffer = v.bin;
params[8].length = &params[8].buffer_length;
params[8].is_null = NULL;
strcpy(v.blob, "一二三四五六七八九十");
params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
params[9].buffer_length = strlen(v.blob);
params[9].buffer = v.blob;
params[9].length = &params[9].buffer_length;
params[9].is_null = NULL;
params[10].buffer_type = TSDB_DATA_TYPE_UTINYINT;
params[10].buffer_length = sizeof(v.u1);
params[10].buffer = &v.u1;
params[10].length = &params[10].buffer_length;
params[10].is_null = NULL;
params[11].buffer_type = TSDB_DATA_TYPE_USMALLINT;
params[11].buffer_length = sizeof(v.u2);
params[11].buffer = &v.u2;
params[11].length = &params[11].buffer_length;
params[11].is_null = NULL;
params[12].buffer_type = TSDB_DATA_TYPE_UINT;
params[12].buffer_length = sizeof(v.u4);
params[12].buffer = &v.u4;
params[12].length = &params[12].buffer_length;
params[12].is_null = NULL;
params[13].buffer_type = TSDB_DATA_TYPE_UBIGINT;
params[13].buffer_length = sizeof(v.u8);
params[13].buffer = &v.u8;
params[13].length = &params[13].buffer_length;
params[13].is_null = NULL;
int is_null = 1;
sql = "insert into m1 values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
code = taos_stmt_prepare(stmt, sql, 0);
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
v.ts = 1591060628000;
for (int i = 0; i < 10; ++i) {
v.ts += 1;
for (int j = 1; j < 10; ++j) {
params[j].is_null = ((i == j) ? &is_null : 0);
}
v.b = (int8_t)i % 2;
v.v1 = (int8_t)i;
v.v2 = (int16_t)(i * 2);
v.v4 = (int32_t)(i * 4);
v.v8 = (int64_t)(i * 8);
v.f4 = (float)(i * 40);
v.f8 = (double)(i * 80);
for (int j = 0; j < sizeof(v.bin); ++j) {
v.bin[j] = (char)(i + '0');
}
v.u1 = (uint8_t)i;
v.u2 = (uint16_t)(i * 2);
v.u4 = (uint32_t)(i * 4);
v.u8 = (uint64_t)(i * 8);
taos_stmt_bind_param(stmt, params);
taos_stmt_add_batch(stmt);
}
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute insert statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
int affectedRows = taos_stmt_affected_rows(stmt);
printf("sucessfully inserted %d rows\n", affectedRows);
taos_stmt_close(stmt);
// query the records
stmt = taos_stmt_init(taos);
taos_stmt_prepare(stmt, "SELECT * FROM m1 WHERE v1 > ? AND v2 < ?", 0);
v.v1 = 5;
v.v2 = 15;
taos_stmt_bind_param(stmt, params + 2);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute select statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
result = taos_stmt_use_result(stmt);
TAOS_ROW row;
int rows = 0;
int num_fields = taos_num_fields(result);
TAOS_FIELD* fields = taos_fetch_fields(result);
// fetch the records row by row
while ((row = taos_fetch_row(result))) {
char temp[256] = {0};
rows++;
taos_print_row(temp, row, fields, num_fields);
printf("%s\n", temp);
}
taos_free_result(result);
taos_stmt_close(stmt);
}
void verify_prepare2(TAOS* taos) {
TAOS_RES* result = taos_query(taos, "drop database if exists test;");
taos_free_result(result);
usleep(100000);
result = taos_query(taos, "create database test;");
int code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create database, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
exit(EXIT_FAILURE);
}
taos_free_result(result);
usleep(100000);
taos_select_db(taos, "test");
// create table
const char* sql =
"create table m1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin "
"binary(40), blob nchar(10), u1 tinyint unsigned, u2 smallint unsigned, u4 int unsigned, u8 bigint unsigned)";
result = taos_query(taos, sql);
code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create table, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
exit(EXIT_FAILURE);
}
taos_free_result(result);
// insert 10 records
struct {
int64_t ts;
int8_t b;
int8_t v1;
int16_t v2;
int32_t v4;
int64_t v8;
float f4;
double f8;
char bin[40];
char blob[80];
uint8_t u1;
uint16_t u2;
uint32_t u4;
uint64_t u8;
} v = {0};
TAOS_STMT* stmt = taos_stmt_init(taos);
TAOS_BIND params[14];
params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
params[0].buffer_length = sizeof(v.ts);
params[0].buffer = &v.ts;
params[0].length = &params[0].buffer_length;
params[0].is_null = NULL;
params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
params[1].buffer_length = sizeof(v.b);
params[1].buffer = &v.b;
params[1].length = &params[1].buffer_length;
params[1].is_null = NULL;
params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
params[2].buffer_length = sizeof(v.v1);
params[2].buffer = &v.v1;
params[2].length = &params[2].buffer_length;
params[2].is_null = NULL;
params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
params[3].buffer_length = sizeof(v.v2);
params[3].buffer = &v.v2;
params[3].length = &params[3].buffer_length;
params[3].is_null = NULL;
params[4].buffer_type = TSDB_DATA_TYPE_INT;
params[4].buffer_length = sizeof(v.v4);
params[4].buffer = &v.v4;
params[4].length = &params[4].buffer_length;
params[4].is_null = NULL;
params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
params[5].buffer_length = sizeof(v.v8);
params[5].buffer = &v.v8;
params[5].length = &params[5].buffer_length;
params[5].is_null = NULL;
params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
params[6].buffer_length = sizeof(v.f4);
params[6].buffer = &v.f4;
params[6].length = &params[6].buffer_length;
params[6].is_null = NULL;
params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
params[7].buffer_length = sizeof(v.f8);
params[7].buffer = &v.f8;
params[7].length = &params[7].buffer_length;
params[7].is_null = NULL;
params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
params[8].buffer_length = sizeof(v.bin);
params[8].buffer = v.bin;
params[8].length = &params[8].buffer_length;
params[8].is_null = NULL;
strcpy(v.blob, "一二三四五六七八九十");
params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
params[9].buffer_length = strlen(v.blob);
params[9].buffer = v.blob;
params[9].length = &params[9].buffer_length;
params[9].is_null = NULL;
params[10].buffer_type = TSDB_DATA_TYPE_UTINYINT;
params[10].buffer_length = sizeof(v.u1);
params[10].buffer = &v.u1;
params[10].length = &params[10].buffer_length;
params[10].is_null = NULL;
params[11].buffer_type = TSDB_DATA_TYPE_USMALLINT;
params[11].buffer_length = sizeof(v.u2);
params[11].buffer = &v.u2;
params[11].length = &params[11].buffer_length;
params[11].is_null = NULL;
params[12].buffer_type = TSDB_DATA_TYPE_UINT;
params[12].buffer_length = sizeof(v.u4);
params[12].buffer = &v.u4;
params[12].length = &params[12].buffer_length;
params[12].is_null = NULL;
params[13].buffer_type = TSDB_DATA_TYPE_UBIGINT;
params[13].buffer_length = sizeof(v.u8);
params[13].buffer = &v.u8;
params[13].length = &params[13].buffer_length;
params[13].is_null = NULL;
sql = "insert into ? values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
code = taos_stmt_prepare(stmt, sql, 0);
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
code = taos_stmt_set_tbname(stmt, "m1");
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
int is_null = 1;
v.ts = 1591060628000;
for (int i = 0; i < 10; ++i) {
v.ts += 1;
for (int j = 1; j < 10; ++j) {
params[j].is_null = ((i == j) ? &is_null : 0);
}
v.b = (int8_t)i % 2;
v.v1 = (int8_t)i;
v.v2 = (int16_t)(i * 2);
v.v4 = (int32_t)(i * 4);
v.v8 = (int64_t)(i * 8);
v.f4 = (float)(i * 40);
v.f8 = (double)(i * 80);
for (int j = 0; j < sizeof(v.bin); ++j) {
v.bin[j] = (char)(i + '0');
}
v.u1 = (uint8_t)i;
v.u2 = (uint16_t)(i * 2);
v.u4 = (uint32_t)(i * 4);
v.u8 = (uint64_t)(i * 8);
taos_stmt_bind_param(stmt, params);
taos_stmt_add_batch(stmt);
}
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute insert statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
int affectedRows = taos_stmt_affected_rows(stmt);
printf("sucessfully inserted %d rows\n", affectedRows);
taos_stmt_close(stmt);
// query the records
stmt = taos_stmt_init(taos);
taos_stmt_prepare(stmt, "SELECT * FROM m1 WHERE v1 > ? AND v2 < ?", 0);
TAOS_BIND qparams[2];
int8_t v1 = 5;
int16_t v2 = 15;
qparams[0].buffer_type = TSDB_DATA_TYPE_TINYINT;
qparams[0].buffer_length = sizeof(v1);
qparams[0].buffer = &v1;
qparams[0].length = &qparams[0].buffer_length;
qparams[0].is_null = NULL;
qparams[1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
qparams[1].buffer_length = sizeof(v2);
qparams[1].buffer = &v2;
qparams[1].length = &qparams[1].buffer_length;
qparams[1].is_null = NULL;
taos_stmt_bind_param(stmt, qparams);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute select statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
result = taos_stmt_use_result(stmt);
TAOS_ROW row;
int rows = 0;
int num_fields = taos_num_fields(result);
TAOS_FIELD* fields = taos_fetch_fields(result);
// fetch the records row by row
while ((row = taos_fetch_row(result))) {
char temp[256] = {0};
rows++;
taos_print_row(temp, row, fields, num_fields);
printf("%s\n", temp);
}
taos_free_result(result);
taos_stmt_close(stmt);
}
void verify_prepare3(TAOS* taos) {
TAOS_RES* result = taos_query(taos, "drop database if exists test;");
taos_free_result(result);
usleep(100000);
result = taos_query(taos, "create database test;");
int code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create database, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
exit(EXIT_FAILURE);
}
taos_free_result(result);
usleep(100000);
taos_select_db(taos, "test");
// create table
const char* sql =
"create stable st1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin "
"binary(40), blob nchar(10), u1 tinyint unsigned, u2 smallint unsigned, u4 int unsigned, u8 bigint unsigned) "
"tags "
"(b_tag bool, v1_tag tinyint, v2_tag smallint, v4_tag int, v8_tag bigint, f4_tag float, f8_tag double, bin_tag "
"binary(40), blob_tag nchar(10), u1_tag tinyint unsigned, u2_tag smallint unsigned, u4_tag int unsigned, u8_tag "
"bigint "
"unsigned)";
result = taos_query(taos, sql);
code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create table, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
exit(EXIT_FAILURE);
}
taos_free_result(result);
TAOS_BIND tags[13];
struct {
int8_t b;
int8_t v1;
int16_t v2;
int32_t v4;
int64_t v8;
float f4;
double f8;
char bin[40];
char blob[80];
uint8_t u1;
uint16_t u2;
uint32_t u4;
uint64_t u8;
} id = {0};
id.b = (int8_t)1;
id.v1 = (int8_t)1;
id.v2 = (int16_t)2;
id.v4 = (int32_t)4;
id.v8 = (int64_t)8;
id.f4 = (float)40;
id.f8 = (double)80;
for (int j = 0; j < sizeof(id.bin); ++j) {
id.bin[j] = (char)('1' + '0');
}
strcpy(id.blob, "一二三四五六七八九十");
id.u1 = (uint8_t)1;
id.u2 = (uint16_t)2;
id.u4 = (uint32_t)4;
id.u8 = (uint64_t)8;
tags[0].buffer_type = TSDB_DATA_TYPE_BOOL;
tags[0].buffer_length = sizeof(id.b);
tags[0].buffer = &id.b;
tags[0].length = &tags[0].buffer_length;
tags[0].is_null = NULL;
tags[1].buffer_type = TSDB_DATA_TYPE_TINYINT;
tags[1].buffer_length = sizeof(id.v1);
tags[1].buffer = &id.v1;
tags[1].length = &tags[1].buffer_length;
tags[1].is_null = NULL;
tags[2].buffer_type = TSDB_DATA_TYPE_SMALLINT;
tags[2].buffer_length = sizeof(id.v2);
tags[2].buffer = &id.v2;
tags[2].length = &tags[2].buffer_length;
tags[2].is_null = NULL;
tags[3].buffer_type = TSDB_DATA_TYPE_INT;
tags[3].buffer_length = sizeof(id.v4);
tags[3].buffer = &id.v4;
tags[3].length = &tags[3].buffer_length;
tags[3].is_null = NULL;
tags[4].buffer_type = TSDB_DATA_TYPE_BIGINT;
tags[4].buffer_length = sizeof(id.v8);
tags[4].buffer = &id.v8;
tags[4].length = &tags[4].buffer_length;
tags[4].is_null = NULL;
tags[5].buffer_type = TSDB_DATA_TYPE_FLOAT;
tags[5].buffer_length = sizeof(id.f4);
tags[5].buffer = &id.f4;
tags[5].length = &tags[5].buffer_length;
tags[5].is_null = NULL;
tags[6].buffer_type = TSDB_DATA_TYPE_DOUBLE;
tags[6].buffer_length = sizeof(id.f8);
tags[6].buffer = &id.f8;
tags[6].length = &tags[6].buffer_length;
tags[6].is_null = NULL;
tags[7].buffer_type = TSDB_DATA_TYPE_BINARY;
tags[7].buffer_length = sizeof(id.bin);
tags[7].buffer = &id.bin;
tags[7].length = &tags[7].buffer_length;
tags[7].is_null = NULL;
tags[8].buffer_type = TSDB_DATA_TYPE_NCHAR;
tags[8].buffer_length = strlen(id.blob);
tags[8].buffer = &id.blob;
tags[8].length = &tags[8].buffer_length;
tags[8].is_null = NULL;
tags[9].buffer_type = TSDB_DATA_TYPE_UTINYINT;
tags[9].buffer_length = sizeof(id.u1);
tags[9].buffer = &id.u1;
tags[9].length = &tags[9].buffer_length;
tags[9].is_null = NULL;
tags[10].buffer_type = TSDB_DATA_TYPE_USMALLINT;
tags[10].buffer_length = sizeof(id.u2);
tags[10].buffer = &id.u2;
tags[10].length = &tags[10].buffer_length;
tags[10].is_null = NULL;
tags[11].buffer_type = TSDB_DATA_TYPE_UINT;
tags[11].buffer_length = sizeof(id.u4);
tags[11].buffer = &id.u4;
tags[11].length = &tags[11].buffer_length;
tags[11].is_null = NULL;
tags[12].buffer_type = TSDB_DATA_TYPE_UBIGINT;
tags[12].buffer_length = sizeof(id.u8);
tags[12].buffer = &id.u8;
tags[12].length = &tags[12].buffer_length;
tags[12].is_null = NULL;
// insert 10 records
struct {
int64_t ts[10];
int8_t b[10];
int8_t v1[10];
int16_t v2[10];
int32_t v4[10];
int64_t v8[10];
float f4[10];
double f8[10];
char bin[10][40];
char blob[10][80];
uint8_t u1[10];
uint16_t u2[10];
uint32_t u4[10];
uint64_t u8[10];
} v;
int32_t* t8_len = malloc(sizeof(int32_t) * 10);
int32_t* t16_len = malloc(sizeof(int32_t) * 10);
int32_t* t32_len = malloc(sizeof(int32_t) * 10);
int32_t* t64_len = malloc(sizeof(int32_t) * 10);
int32_t* float_len = malloc(sizeof(int32_t) * 10);
int32_t* double_len = malloc(sizeof(int32_t) * 10);
int32_t* bin_len = malloc(sizeof(int32_t) * 10);
int32_t* blob_len = malloc(sizeof(int32_t) * 10);
int32_t* u8_len = malloc(sizeof(int32_t) * 10);
int32_t* u16_len = malloc(sizeof(int32_t) * 10);
int32_t* u32_len = malloc(sizeof(int32_t) * 10);
int32_t* u64_len = malloc(sizeof(int32_t) * 10);
TAOS_STMT* stmt = taos_stmt_init(taos);
TAOS_MULTI_BIND params[14];
char is_null[10] = {0};
params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
params[0].buffer_length = sizeof(v.ts[0]);
params[0].buffer = v.ts;
params[0].length = t64_len;
params[0].is_null = is_null;
params[0].num = 10;
params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
params[1].buffer_length = sizeof(v.b[0]);
params[1].buffer = v.b;
params[1].length = t8_len;
params[1].is_null = is_null;
params[1].num = 10;
params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
params[2].buffer_length = sizeof(v.v1[0]);
params[2].buffer = v.v1;
params[2].length = t8_len;
params[2].is_null = is_null;
params[2].num = 10;
params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
params[3].buffer_length = sizeof(v.v2[0]);
params[3].buffer = v.v2;
params[3].length = t16_len;
params[3].is_null = is_null;
params[3].num = 10;
params[4].buffer_type = TSDB_DATA_TYPE_INT;
params[4].buffer_length = sizeof(v.v4[0]);
params[4].buffer = v.v4;
params[4].length = t32_len;
params[4].is_null = is_null;
params[4].num = 10;
params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
params[5].buffer_length = sizeof(v.v8[0]);
params[5].buffer = v.v8;
params[5].length = t64_len;
params[5].is_null = is_null;
params[5].num = 10;
params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
params[6].buffer_length = sizeof(v.f4[0]);
params[6].buffer = v.f4;
params[6].length = float_len;
params[6].is_null = is_null;
params[6].num = 10;
params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
params[7].buffer_length = sizeof(v.f8[0]);
params[7].buffer = v.f8;
params[7].length = double_len;
params[7].is_null = is_null;
params[7].num = 10;
params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
params[8].buffer_length = sizeof(v.bin[0]);
params[8].buffer = v.bin;
params[8].length = bin_len;
params[8].is_null = is_null;
params[8].num = 10;
params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
params[9].buffer_length = sizeof(v.blob[0]);
params[9].buffer = v.blob;
params[9].length = blob_len;
params[9].is_null = is_null;
params[9].num = 10;
params[10].buffer_type = TSDB_DATA_TYPE_UTINYINT;
params[10].buffer_length = sizeof(v.u1[0]);
params[10].buffer = v.u1;
params[10].length = u8_len;
params[10].is_null = is_null;
params[10].num = 10;
params[11].buffer_type = TSDB_DATA_TYPE_USMALLINT;
params[11].buffer_length = sizeof(v.u2[0]);
params[11].buffer = v.u2;
params[11].length = u16_len;
params[11].is_null = is_null;
params[11].num = 10;
params[12].buffer_type = TSDB_DATA_TYPE_UINT;
params[12].buffer_length = sizeof(v.u4[0]);
params[12].buffer = v.u4;
params[12].length = u32_len;
params[12].is_null = is_null;
params[12].num = 10;
params[13].buffer_type = TSDB_DATA_TYPE_UBIGINT;
params[13].buffer_length = sizeof(v.u8[0]);
params[13].buffer = v.u8;
params[13].length = u64_len;
params[13].is_null = is_null;
params[13].num = 10;
sql = "insert into ? using st1 tags(?,?,?,?,?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
code = taos_stmt_prepare(stmt, sql, 0);
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
code = taos_stmt_set_tbname_tags(stmt, "m1", tags);
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_set_tbname_tags. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
int64_t ts = 1591060628000;
for (int i = 0; i < 10; ++i) {
v.ts[i] = ts++;
is_null[i] = 0;
v.b[i] = (int8_t)i % 2;
v.v1[i] = (int8_t)i;
v.v2[i] = (int16_t)(i * 2);
v.v4[i] = (int32_t)(i * 4);
v.v8[i] = (int64_t)(i * 8);
v.f4[i] = (float)(i * 40);
v.f8[i] = (double)(i * 80);
for (int j = 0; j < sizeof(v.bin[0]); ++j) {
v.bin[i][j] = (char)(i + '0');
}
strcpy(v.blob[i], "一二三四五六七八九十");
v.u1[i] = (uint8_t)i;
v.u2[i] = (uint16_t)(i * 2);
v.u4[i] = (uint32_t)(i * 4);
v.u8[i] = (uint64_t)(i * 8);
t8_len[i] = sizeof(int8_t);
t16_len[i] = sizeof(int16_t);
t32_len[i] = sizeof(int32_t);
t64_len[i] = sizeof(int64_t);
float_len[i] = sizeof(float);
double_len[i] = sizeof(double);
bin_len[i] = sizeof(v.bin[0]);
blob_len[i] = (int32_t)strlen(v.blob[i]);
u8_len[i] = sizeof(uint8_t);
u16_len[i] = sizeof(uint16_t);
u32_len[i] = sizeof(uint32_t);
u64_len[i] = sizeof(uint64_t);
}
taos_stmt_bind_param_batch(stmt, params);
taos_stmt_add_batch(stmt);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute insert statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
int affectedRows = taos_stmt_affected_rows(stmt);
printf("successfully inserted %d rows\n", affectedRows);
taos_stmt_close(stmt);
// query the records
stmt = taos_stmt_init(taos);
taos_stmt_prepare(stmt, "SELECT * FROM m1 WHERE v1 > ? AND v2 < ?", 0);
TAOS_BIND qparams[2];
int8_t v1 = 5;
int16_t v2 = 15;
qparams[0].buffer_type = TSDB_DATA_TYPE_TINYINT;
qparams[0].buffer_length = sizeof(v1);
qparams[0].buffer = &v1;
qparams[0].length = &qparams[0].buffer_length;
qparams[0].is_null = NULL;
qparams[1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
qparams[1].buffer_length = sizeof(v2);
qparams[1].buffer = &v2;
qparams[1].length = &qparams[1].buffer_length;
qparams[1].is_null = NULL;
taos_stmt_bind_param(stmt, qparams);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31mfailed to execute select statement.error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
result = taos_stmt_use_result(stmt);
TAOS_ROW row;
int rows = 0;
int num_fields = taos_num_fields(result);
TAOS_FIELD* fields = taos_fetch_fields(result);
// fetch the records row by row
while ((row = taos_fetch_row(result))) {
char temp[256] = {0};
rows++;
taos_print_row(temp, row, fields, num_fields);
printf("%s\n", temp);
}
taos_free_result(result);
taos_stmt_close(stmt);
free(t8_len);
free(t16_len);
free(t32_len);
free(t64_len);
free(float_len);
free(double_len);
free(bin_len);
free(blob_len);
free(u8_len);
free(u16_len);
free(u32_len);
free(u64_len);
}
/**
* @brief Verify the upper/lower case of tableName for create(by setTableName)/query/show/describe/drop.
* https://jira.taosdata.com:18080/browse/TS-904
* https://jira.taosdata.com:18090/pages/viewpage.action?pageId=129140555
* @param taos
*/
void verify_prepare4(TAOS* taos) {
printf("Verify the upper/lower case of tableName for create(by setTableName)/query/show/describe/drop etc.\n");
TAOS_RES* result = taos_query(taos, "drop database if exists test;");
taos_free_result(result);
usleep(100000);
result = taos_query(taos, "create database test;");
int code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create database, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
exit(EXIT_FAILURE);
}
taos_free_result(result);
usleep(100000);
taos_select_db(taos, "test");
// create table
const char* sql =
"create stable st1 (ts timestamp, b bool, v1 tinyint, v2 smallint, v4 int, v8 bigint, f4 float, f8 double, bin "
"binary(40), blob nchar(10), u1 tinyint unsigned, u2 smallint unsigned, u4 int unsigned, u8 bigint unsigned) "
"tags "
"(b_tag bool, v1_tag tinyint, v2_tag smallint, v4_tag int, v8_tag bigint, f4_tag float, f8_tag double, bin_tag "
"binary(40), blob_tag nchar(10), u1_tag tinyint unsigned, u2_tag smallint unsigned, u4_tag int unsigned, u8_tag "
"bigint "
"unsigned)";
result = taos_query(taos, sql);
code = taos_errno(result);
if (code != 0) {
printf("\033[31mfailed to create table, reason:%s\033[0m\n", taos_errstr(result));
taos_free_result(result);
exit(EXIT_FAILURE);
}
taos_free_result(result);
TAOS_BIND tags[13];
struct {
int8_t b;
int8_t v1;
int16_t v2;
int32_t v4;
int64_t v8;
float f4;
double f8;
char bin[40];
char blob[80];
uint8_t u1;
uint16_t u2;
uint32_t u4;
uint64_t u8;
} id = {0};
id.b = (int8_t)1;
id.v1 = (int8_t)1;
id.v2 = (int16_t)2;
id.v4 = (int32_t)4;
id.v8 = (int64_t)8;
id.f4 = (float)40;
id.f8 = (double)80;
for (int j = 0; j < sizeof(id.bin); ++j) {
id.bin[j] = (char)('1' + '0');
}
strcpy(id.blob, "一二三四五六七八九十");
id.u1 = (uint8_t)1;
id.u2 = (uint16_t)2;
id.u4 = (uint32_t)4;
id.u8 = (uint64_t)8;
tags[0].buffer_type = TSDB_DATA_TYPE_BOOL;
tags[0].buffer_length = sizeof(id.b);
tags[0].buffer = &id.b;
tags[0].length = &tags[0].buffer_length;
tags[0].is_null = NULL;
tags[1].buffer_type = TSDB_DATA_TYPE_TINYINT;
tags[1].buffer_length = sizeof(id.v1);
tags[1].buffer = &id.v1;
tags[1].length = &tags[1].buffer_length;
tags[1].is_null = NULL;
tags[2].buffer_type = TSDB_DATA_TYPE_SMALLINT;
tags[2].buffer_length = sizeof(id.v2);
tags[2].buffer = &id.v2;
tags[2].length = &tags[2].buffer_length;
tags[2].is_null = NULL;
tags[3].buffer_type = TSDB_DATA_TYPE_INT;
tags[3].buffer_length = sizeof(id.v4);
tags[3].buffer = &id.v4;
tags[3].length = &tags[3].buffer_length;
tags[3].is_null = NULL;
tags[4].buffer_type = TSDB_DATA_TYPE_BIGINT;
tags[4].buffer_length = sizeof(id.v8);
tags[4].buffer = &id.v8;
tags[4].length = &tags[4].buffer_length;
tags[4].is_null = NULL;
tags[5].buffer_type = TSDB_DATA_TYPE_FLOAT;
tags[5].buffer_length = sizeof(id.f4);
tags[5].buffer = &id.f4;
tags[5].length = &tags[5].buffer_length;
tags[5].is_null = NULL;
tags[6].buffer_type = TSDB_DATA_TYPE_DOUBLE;
tags[6].buffer_length = sizeof(id.f8);
tags[6].buffer = &id.f8;
tags[6].length = &tags[6].buffer_length;
tags[6].is_null = NULL;
tags[7].buffer_type = TSDB_DATA_TYPE_BINARY;
tags[7].buffer_length = sizeof(id.bin);
tags[7].buffer = &id.bin;
tags[7].length = &tags[7].buffer_length;
tags[7].is_null = NULL;
tags[8].buffer_type = TSDB_DATA_TYPE_NCHAR;
tags[8].buffer_length = strlen(id.blob);
tags[8].buffer = &id.blob;
tags[8].length = &tags[8].buffer_length;
tags[8].is_null = NULL;
tags[9].buffer_type = TSDB_DATA_TYPE_UTINYINT;
tags[9].buffer_length = sizeof(id.u1);
tags[9].buffer = &id.u1;
tags[9].length = &tags[9].buffer_length;
tags[9].is_null = NULL;
tags[10].buffer_type = TSDB_DATA_TYPE_USMALLINT;
tags[10].buffer_length = sizeof(id.u2);
tags[10].buffer = &id.u2;
tags[10].length = &tags[10].buffer_length;
tags[10].is_null = NULL;
tags[11].buffer_type = TSDB_DATA_TYPE_UINT;
tags[11].buffer_length = sizeof(id.u4);
tags[11].buffer = &id.u4;
tags[11].length = &tags[11].buffer_length;
tags[11].is_null = NULL;
tags[12].buffer_type = TSDB_DATA_TYPE_UBIGINT;
tags[12].buffer_length = sizeof(id.u8);
tags[12].buffer = &id.u8;
tags[12].length = &tags[12].buffer_length;
tags[12].is_null = NULL;
// insert 10 records
struct {
int64_t ts[10];
int8_t b[10];
int8_t v1[10];
int16_t v2[10];
int32_t v4[10];
int64_t v8[10];
float f4[10];
double f8[10];
char bin[10][40];
char blob[10][80];
uint8_t u1[10];
uint16_t u2[10];
uint32_t u4[10];
uint64_t u8[10];
} v;
int32_t* t8_len = malloc(sizeof(int32_t) * 10);
int32_t* t16_len = malloc(sizeof(int32_t) * 10);
int32_t* t32_len = malloc(sizeof(int32_t) * 10);
int32_t* t64_len = malloc(sizeof(int32_t) * 10);
int32_t* float_len = malloc(sizeof(int32_t) * 10);
int32_t* double_len = malloc(sizeof(int32_t) * 10);
int32_t* bin_len = malloc(sizeof(int32_t) * 10);
int32_t* blob_len = malloc(sizeof(int32_t) * 10);
int32_t* u8_len = malloc(sizeof(int32_t) * 10);
int32_t* u16_len = malloc(sizeof(int32_t) * 10);
int32_t* u32_len = malloc(sizeof(int32_t) * 10);
int32_t* u64_len = malloc(sizeof(int32_t) * 10);
TAOS_MULTI_BIND params[14];
char is_null[10] = {0};
params[0].buffer_type = TSDB_DATA_TYPE_TIMESTAMP;
params[0].buffer_length = sizeof(v.ts[0]);
params[0].buffer = v.ts;
params[0].length = t64_len;
params[0].is_null = is_null;
params[0].num = 10;
params[1].buffer_type = TSDB_DATA_TYPE_BOOL;
params[1].buffer_length = sizeof(v.b[0]);
params[1].buffer = v.b;
params[1].length = t8_len;
params[1].is_null = is_null;
params[1].num = 10;
params[2].buffer_type = TSDB_DATA_TYPE_TINYINT;
params[2].buffer_length = sizeof(v.v1[0]);
params[2].buffer = v.v1;
params[2].length = t8_len;
params[2].is_null = is_null;
params[2].num = 10;
params[3].buffer_type = TSDB_DATA_TYPE_SMALLINT;
params[3].buffer_length = sizeof(v.v2[0]);
params[3].buffer = v.v2;
params[3].length = t16_len;
params[3].is_null = is_null;
params[3].num = 10;
params[4].buffer_type = TSDB_DATA_TYPE_INT;
params[4].buffer_length = sizeof(v.v4[0]);
params[4].buffer = v.v4;
params[4].length = t32_len;
params[4].is_null = is_null;
params[4].num = 10;
params[5].buffer_type = TSDB_DATA_TYPE_BIGINT;
params[5].buffer_length = sizeof(v.v8[0]);
params[5].buffer = v.v8;
params[5].length = t64_len;
params[5].is_null = is_null;
params[5].num = 10;
params[6].buffer_type = TSDB_DATA_TYPE_FLOAT;
params[6].buffer_length = sizeof(v.f4[0]);
params[6].buffer = v.f4;
params[6].length = float_len;
params[6].is_null = is_null;
params[6].num = 10;
params[7].buffer_type = TSDB_DATA_TYPE_DOUBLE;
params[7].buffer_length = sizeof(v.f8[0]);
params[7].buffer = v.f8;
params[7].length = double_len;
params[7].is_null = is_null;
params[7].num = 10;
params[8].buffer_type = TSDB_DATA_TYPE_BINARY;
params[8].buffer_length = sizeof(v.bin[0]);
params[8].buffer = v.bin;
params[8].length = bin_len;
params[8].is_null = is_null;
params[8].num = 10;
params[9].buffer_type = TSDB_DATA_TYPE_NCHAR;
params[9].buffer_length = sizeof(v.blob[0]);
params[9].buffer = v.blob;
params[9].length = blob_len;
params[9].is_null = is_null;
params[9].num = 10;
params[10].buffer_type = TSDB_DATA_TYPE_UTINYINT;
params[10].buffer_length = sizeof(v.u1[0]);
params[10].buffer = v.u1;
params[10].length = u8_len;
params[10].is_null = is_null;
params[10].num = 10;
params[11].buffer_type = TSDB_DATA_TYPE_USMALLINT;
params[11].buffer_length = sizeof(v.u2[0]);
params[11].buffer = v.u2;
params[11].length = u16_len;
params[11].is_null = is_null;
params[11].num = 10;
params[12].buffer_type = TSDB_DATA_TYPE_UINT;
params[12].buffer_length = sizeof(v.u4[0]);
params[12].buffer = v.u4;
params[12].length = u32_len;
params[12].is_null = is_null;
params[12].num = 10;
params[13].buffer_type = TSDB_DATA_TYPE_UBIGINT;
params[13].buffer_length = sizeof(v.u8[0]);
params[13].buffer = v.u8;
params[13].length = u64_len;
params[13].is_null = is_null;
params[13].num = 10;
// verify table names for upper/lower case
#define VERIFY_CNT 5
typedef struct {
char setTbName[20];
char showName[20];
char describeName[20];
char queryName[20];
char dropName[20];
} STbNames;
/**
* @brief
* 0 - success expected
* NonZero - fail expected
*/
typedef struct {
int32_t setTbName;
int32_t showName;
int32_t describeName;
int32_t queryName;
int32_t dropName;
} STbNamesResult;
STbNames tbName[VERIFY_CNT] = {0};
STbNamesResult tbNameResult[VERIFY_CNT] = {0};
STbNames* pTbName = NULL;
STbNamesResult* pTbNameResult = NULL;
pTbName = &tbName[0];
pTbNameResult = &tbNameResult[0];
strcpy(pTbName->setTbName, "Mn1");
strcpy(pTbName->showName, "mn1");
strcpy(pTbName->describeName, "mn1");
strcpy(pTbName->queryName, "mn1");
strcpy(pTbName->dropName, "mn1");
pTbName = &tbName[1];
pTbNameResult = &tbNameResult[1];
strcpy(pTbName->setTbName, "'Mn1'");
strcpy(pTbName->showName, "'mn1'");
strcpy(pTbName->describeName, "'mn1'");
strcpy(pTbName->queryName, "'mn1'");
strcpy(pTbName->dropName, "'mn1'");
pTbName = &tbName[2];
pTbNameResult = &tbNameResult[2];
strcpy(pTbName->setTbName, "\"Mn1\"");
strcpy(pTbName->showName, "\"mn1\"");
strcpy(pTbName->describeName, "\"mn1\"");
strcpy(pTbName->queryName, "\"mn1\"");
strcpy(pTbName->dropName, "\"mn1\"");
pTbName = &tbName[3];
pTbNameResult = &tbNameResult[3];
strcpy(pTbName->setTbName, "\"Mn1\"");
strcpy(pTbName->showName, "'mn1'");
strcpy(pTbName->describeName, "'mn1'");
strcpy(pTbName->queryName, "mn1");
strcpy(pTbName->dropName, "\"mn1\"");
pTbName = &tbName[4];
pTbNameResult = &tbNameResult[4];
strcpy(pTbName->setTbName, "`Mn1`");
strcpy(pTbName->showName, "Mn1"); // TODO support uniform of ``
strcpy(pTbName->describeName, "`Mn1`");
strcpy(pTbName->queryName, "`Mn1`");
strcpy(pTbName->dropName, "`Mn1`");
TAOS_STMT* stmt = NULL;
for (int n = 0; n < VERIFY_CNT; ++n) {
printf("\033[31m[%d] ===================================\033[0m\n", n);
pTbName = &tbName[n];
pTbNameResult = &tbNameResult[n];
char tmpStr[256] = {0};
// set table name
stmt = taos_stmt_init(taos);
if (!stmt) {
printf("\033[31m[%d] failed to execute taos_stmt_init. error:%s\033[0m\n", n);
exit(EXIT_FAILURE);
}
sql = "insert into ? using st1 tags(?,?,?,?,?,?,?,?,?,?,?,?,?) values(?,?,?,?,?,?,?,?,?,?,?,?,?,?)";
code = taos_stmt_prepare(stmt, sql, 0);
if (code != 0) {
printf("\033[31mfailed to execute taos_stmt_prepare. error:%s\033[0m\n", taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
printf("[%d] taos_stmt_set_tbname_tags, tbname=%s\n", n, pTbName->setTbName);
code = taos_stmt_set_tbname_tags(stmt, pTbName->setTbName, tags);
if ((!pTbNameResult->setTbName && (0 != code)) || (pTbNameResult->setTbName && (0 == code))) {
printf("\033[31m[%d] failed to execute taos_stmt_set_tbname_tags. error:%s\033[0m\n", n, taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
if (code == 0) {
int64_t ts = 1591060628000 + 1000 * n;
for (int i = 0; i < 10; ++i) {
v.ts[i] = ts++;
is_null[i] = 0;
v.b[i] = (int8_t)i % 2;
v.v1[i] = (int8_t)i;
v.v2[i] = (int16_t)(i * 2);
v.v4[i] = (int32_t)(i * 4);
v.v8[i] = (int64_t)(i * 8);
v.f4[i] = (float)(i * 40);
v.f8[i] = (double)(i * 80);
for (int j = 0; j < sizeof(v.bin[0]); ++j) {
v.bin[i][j] = (char)(i + '0');
}
strcpy(v.blob[i], "一二三四五六七八九十");
v.u1[i] = (uint8_t)i;
v.u2[i] = (uint16_t)(i * 2);
v.u4[i] = (uint32_t)(i * 4);
v.u8[i] = (uint64_t)(i * 8);
t8_len[i] = sizeof(int8_t);
t16_len[i] = sizeof(int16_t);
t32_len[i] = sizeof(int32_t);
t64_len[i] = sizeof(int64_t);
float_len[i] = sizeof(float);
double_len[i] = sizeof(double);
bin_len[i] = sizeof(v.bin[0]);
blob_len[i] = (int32_t)strlen(v.blob[i]);
u8_len[i] = sizeof(uint8_t);
u16_len[i] = sizeof(uint16_t);
u32_len[i] = sizeof(uint32_t);
u64_len[i] = sizeof(uint64_t);
}
taos_stmt_bind_param_batch(stmt, params);
taos_stmt_add_batch(stmt);
if (taos_stmt_execute(stmt) != 0) {
printf("\033[31m[%d] failed to execute insert statement.error:%s\033[0m\n", n, taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
}
taos_stmt_close(stmt);
// show the table
printf("[%d] show tables, tbName = %s\n", n, pTbName->showName);
stmt = taos_stmt_init(taos);
sprintf(tmpStr, "show tables like %s", pTbName->showName);
taos_stmt_prepare(stmt, tmpStr, 0);
code = taos_stmt_execute(stmt);
if ((!pTbNameResult->showName && (0 != code)) || (pTbNameResult->showName && (0 == code))) {
printf("\033[31m[%d] failed to execute show tables like. error:%s\033[0m\n", n, taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
taos_stmt_close(stmt);
// describe the table
printf("[%d] describe tables, tbName = %s\n", n, pTbName->describeName);
stmt = taos_stmt_init(taos);
sprintf(tmpStr, "describe %s", pTbName->describeName);
taos_stmt_prepare(stmt, tmpStr, 0);
code = taos_stmt_execute(stmt);
if ((!pTbNameResult->describeName && (0 != code)) || (pTbNameResult->describeName && (0 == code))) {
printf("\033[31m[%d] failed to execute describe tables. error:%s\033[0m\n", n, taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
taos_stmt_close(stmt);
// query the records
printf("[%d] select statement, tbName = %s\n", n, pTbName->queryName);
stmt = taos_stmt_init(taos);
sprintf(tmpStr, "SELECT * FROM %s", pTbName->queryName);
taos_stmt_prepare(stmt, tmpStr, 0);
TAOS_BIND qparams[2];
int8_t v1 = 5;
int16_t v2 = 15;
qparams[0].buffer_type = TSDB_DATA_TYPE_TINYINT;
qparams[0].buffer_length = sizeof(v1);
qparams[0].buffer = &v1;
qparams[0].length = &qparams[0].buffer_length;
qparams[0].is_null = NULL;
qparams[1].buffer_type = TSDB_DATA_TYPE_SMALLINT;
qparams[1].buffer_length = sizeof(v2);
qparams[1].buffer = &v2;
qparams[1].length = &qparams[1].buffer_length;
qparams[1].is_null = NULL;
taos_stmt_bind_param(stmt, qparams);
code = taos_stmt_execute(stmt);
if ((!pTbNameResult->queryName && (0 != code)) || (pTbNameResult->queryName && (0 == code))) {
printf("\033[31m[%d] failed to execute select statement.error:%s\033[0m\n", n, taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
result = taos_stmt_use_result(stmt);
TAOS_ROW row;
int rows = 0;
int num_fields = taos_num_fields(result);
TAOS_FIELD* fields = taos_fetch_fields(result);
// fetch the records row by row
while ((row = taos_fetch_row(result))) {
char temp[256] = {0};
rows++;
taos_print_row(temp, row, fields, num_fields);
printf("[%d] row = %s\n", n, temp);
}
taos_free_result(result);
taos_stmt_close(stmt);
// drop table
printf("[%d] drop table, tbName = %s\n", n, pTbName->dropName);
stmt = taos_stmt_init(taos);
sprintf(tmpStr, "drop table %s", pTbName->dropName);
taos_stmt_prepare(stmt, tmpStr, 0);
code = taos_stmt_execute(stmt);
if ((!pTbNameResult->dropName && (0 != code)) || (pTbNameResult->dropName && (0 == code))) {
printf("\033[31m[%d] failed to drop table. error:%s\033[0m\n", n, taos_stmt_errstr(stmt));
taos_stmt_close(stmt);
exit(EXIT_FAILURE);
}
taos_stmt_close(stmt);
}
free(t8_len);
free(t16_len);
free(t32_len);
free(t64_len);
free(float_len);
free(double_len);
free(bin_len);
free(blob_len);
free(u8_len);
free(u16_len);
free(u32_len);
free(u64_len);
}
int main(int argc, char* argv[]) {
const char* host = "127.0.0.1";
const char* user = "root";
const char* passwd = "taosdata";
taos_options(TSDB_OPTION_TIMEZONE, "GMT-8");
TAOS* taos = taos_connect(host, user, passwd, "", 0);
if (taos == NULL) {
printf("\033[31mfailed to connect to db, reason:%s\033[0m\n", taos_errstr(taos));
exit(1);
}
char* info = taos_get_server_info(taos);
printf("server info: %s\n", info);
info = taos_get_client_info(taos);
printf("client info: %s\n", info);
printf("************ verify prepare *************\n");
verify_prepare(taos);
printf("************ verify prepare2 *************\n");
verify_prepare2(taos);
printf("************ verify prepare3 *************\n");
verify_prepare3(taos);
printf("************ verify prepare4 *************\n");
verify_prepare4(taos);
printf("************ verify end *************\n");
exit(EXIT_SUCCESS);
}
Reference in a new issue View git blame Copy permalink