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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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1
include/client/taos.h
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@ -188,6 +188,7 @@ 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);

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) {