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[td-14493] add a new api.

This commit is contained in:
Haojun Liao 2022-04-07 13:57:27 +08:00
parent 94b7081e97
commit f4047aa120
2 changed files with 49 additions and 29 deletions
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55
include/client/taos.h
View File

@ -152,34 +152,34 @@ DLL_EXPORT void taos_close(TAOS *taos);
const char *taos_data_type(int type); const char *taos_data_type(int type);
DLL_EXPORT TAOS_STMT *taos_stmt_init(TAOS *taos); DLL_EXPORT TAOS_STMT *taos_stmt_init(TAOS *taos);
DLL_EXPORT int taos_stmt_prepare(TAOS_STMT *stmt, const char *sql, unsigned long length); DLL_EXPORT int taos_stmt_prepare(TAOS_STMT *stmt, const char *sql, unsigned long length);
DLL_EXPORT int taos_stmt_set_tbname_tags(TAOS_STMT *stmt, const char *name, TAOS_BIND *tags); DLL_EXPORT int taos_stmt_set_tbname_tags(TAOS_STMT *stmt, const char *name, TAOS_BIND *tags);
DLL_EXPORT int taos_stmt_set_tbname(TAOS_STMT *stmt, const char *name); DLL_EXPORT int taos_stmt_set_tbname(TAOS_STMT *stmt, const char *name);
DLL_EXPORT int taos_stmt_set_sub_tbname(TAOS_STMT *stmt, const char *name); DLL_EXPORT int taos_stmt_set_sub_tbname(TAOS_STMT *stmt, const char *name);
DLL_EXPORT int taos_stmt_is_insert(TAOS_STMT *stmt, int *insert); DLL_EXPORT int taos_stmt_is_insert(TAOS_STMT *stmt, int *insert);
DLL_EXPORT int taos_stmt_num_params(TAOS_STMT *stmt, int *nums); DLL_EXPORT int taos_stmt_num_params(TAOS_STMT *stmt, int *nums);
DLL_EXPORT int taos_stmt_get_param(TAOS_STMT *stmt, int idx, int *type, int *bytes); DLL_EXPORT int taos_stmt_get_param(TAOS_STMT *stmt, int idx, int *type, int *bytes);
DLL_EXPORT int taos_stmt_bind_param(TAOS_STMT *stmt, TAOS_BIND *bind); DLL_EXPORT int taos_stmt_bind_param(TAOS_STMT *stmt, TAOS_BIND *bind);
DLL_EXPORT int taos_stmt_bind_param_batch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind); DLL_EXPORT int taos_stmt_bind_param_batch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind);
DLL_EXPORT int taos_stmt_bind_single_param_batch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind, int colIdx); DLL_EXPORT int taos_stmt_bind_single_param_batch(TAOS_STMT *stmt, TAOS_MULTI_BIND *bind, int colIdx);
DLL_EXPORT int taos_stmt_add_batch(TAOS_STMT *stmt); DLL_EXPORT int taos_stmt_add_batch(TAOS_STMT *stmt);
DLL_EXPORT int taos_stmt_execute(TAOS_STMT *stmt); DLL_EXPORT int taos_stmt_execute(TAOS_STMT *stmt);
DLL_EXPORT TAOS_RES *taos_stmt_use_result(TAOS_STMT *stmt); DLL_EXPORT TAOS_RES *taos_stmt_use_result(TAOS_STMT *stmt);
DLL_EXPORT int taos_stmt_close(TAOS_STMT *stmt); DLL_EXPORT int taos_stmt_close(TAOS_STMT *stmt);
DLL_EXPORT char *taos_stmt_errstr(TAOS_STMT *stmt); DLL_EXPORT char *taos_stmt_errstr(TAOS_STMT *stmt);
DLL_EXPORT int taos_stmt_affected_rows(TAOS_STMT *stmt); DLL_EXPORT int taos_stmt_affected_rows(TAOS_STMT *stmt);
DLL_EXPORT TAOS_RES *taos_query(TAOS *taos, const char *sql); DLL_EXPORT TAOS_RES *taos_query(TAOS *taos, const char *sql);
DLL_EXPORT TAOS_RES *taos_query_l(TAOS *taos, const char *sql, int sqlLen); DLL_EXPORT TAOS_RES *taos_query_l(TAOS *taos, const char *sql, int sqlLen);
DLL_EXPORT TAOS_ROW taos_fetch_row(TAOS_RES *res); DLL_EXPORT TAOS_ROW taos_fetch_row(TAOS_RES *res);
DLL_EXPORT int taos_result_precision(TAOS_RES *res); // get the time precision of result DLL_EXPORT int taos_result_precision(TAOS_RES *res); // get the time precision of result
DLL_EXPORT void taos_free_result(TAOS_RES *res); DLL_EXPORT void taos_free_result(TAOS_RES *res);
DLL_EXPORT int taos_field_count(TAOS_RES *res); DLL_EXPORT int taos_field_count(TAOS_RES *res);
DLL_EXPORT int taos_num_fields(TAOS_RES *res); DLL_EXPORT int taos_num_fields(TAOS_RES *res);
DLL_EXPORT int taos_affected_rows(TAOS_RES *res); DLL_EXPORT int taos_affected_rows(TAOS_RES *res);
DLL_EXPORT TAOS_FIELD *taos_fetch_fields(TAOS_RES *res); DLL_EXPORT TAOS_FIELD *taos_fetch_fields(TAOS_RES *res);
DLL_EXPORT int taos_select_db(TAOS *taos, const char *db); DLL_EXPORT int taos_select_db(TAOS *taos, const char *db);
@ -188,11 +188,12 @@ DLL_EXPORT void taos_stop_query(TAOS_RES *res);
DLL_EXPORT bool taos_is_null(TAOS_RES *res, int32_t row, int32_t col); DLL_EXPORT bool taos_is_null(TAOS_RES *res, int32_t row, int32_t col);
DLL_EXPORT bool taos_is_update_query(TAOS_RES *res); DLL_EXPORT bool taos_is_update_query(TAOS_RES *res);
DLL_EXPORT int taos_fetch_block(TAOS_RES *res, TAOS_ROW *rows); DLL_EXPORT int taos_fetch_block(TAOS_RES *res, TAOS_ROW *rows);
DLL_EXPORT int *taos_get_column_data_offset(TAOS_RES *res, int columnIndex);
DLL_EXPORT int taos_validate_sql(TAOS *taos, const char *sql); DLL_EXPORT int taos_validate_sql(TAOS *taos, const char *sql);
DLL_EXPORT void taos_reset_current_db(TAOS *taos); DLL_EXPORT void taos_reset_current_db(TAOS *taos);
DLL_EXPORT int *taos_fetch_lengths(TAOS_RES *res); DLL_EXPORT int *taos_fetch_lengths(TAOS_RES *res);
DLL_EXPORT TAOS_ROW *taos_result_block(TAOS_RES *res); DLL_EXPORT TAOS_ROW *taos_result_block(TAOS_RES *res);
DLL_EXPORT const char *taos_get_server_info(TAOS *taos); DLL_EXPORT const char *taos_get_server_info(TAOS *taos);
DLL_EXPORT const char *taos_get_client_info(); DLL_EXPORT const char *taos_get_client_info();

23
source/client/src/clientMain.c
View File

@ -385,11 +385,11 @@ bool taos_is_update_query(TAOS_RES *res) {
} }
int taos_fetch_block(TAOS_RES *res, TAOS_ROW *rows) { int taos_fetch_block(TAOS_RES *res, TAOS_ROW *rows) {
if (res == NULL) { SRequestObj *pRequest = (SRequestObj *)res;
if (pRequest == NULL) {
return 0; return 0;
} }
SRequestObj *pRequest = (SRequestObj *)res;
if (pRequest->type == TSDB_SQL_RETRIEVE_EMPTY_RESULT || pRequest->type == TSDB_SQL_INSERT || if (pRequest->type == TSDB_SQL_RETRIEVE_EMPTY_RESULT || pRequest->type == TSDB_SQL_INSERT ||
pRequest->code != TSDB_CODE_SUCCESS || taos_num_fields(res) == 0) { pRequest->code != TSDB_CODE_SUCCESS || taos_num_fields(res) == 0) {
return 0; return 0;
@ -405,6 +405,25 @@ int taos_fetch_block(TAOS_RES *res, TAOS_ROW *rows) {
return pResultInfo->numOfRows; return pResultInfo->numOfRows;
} }
int *taos_get_column_data_offset(TAOS_RES *res, int columnIndex) {
SRequestObj *pRequest = (SRequestObj *)res;
if (pRequest == NULL) {
return 0;
}
int32_t numOfFields = taos_num_fields(pRequest);
if (columnIndex < 0 || columnIndex >= numOfFields || numOfFields == 0) {
return 0;
}
TAOS_FIELD* pField = &pRequest->body.resInfo.userFields[columnIndex];
if (!IS_VAR_DATA_TYPE(pField->type)) {
return 0;
}
return pRequest->body.resInfo.pCol[columnIndex].offset;
}
int taos_validate_sql(TAOS *taos, const char *sql) { return true; } int taos_validate_sql(TAOS *taos, const char *sql) { return true; }
void taos_reset_current_db(TAOS *taos) { void taos_reset_current_db(TAOS *taos) {