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enh(query): add cast from binary/nchar -> timestamp for date-time string

This commit is contained in:
Ganlin Zhao 2022-07-02 15:47:42 +08:00
parent 35698da9c9
commit 68fab47397
2 changed files with 8 additions and 11 deletions
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15
source/libs/function/src/builtins.c
View File

@ -1446,19 +1446,9 @@ static int32_t translateSubstr(SFunctionNode* pFunc, char* pErrBuf, int32_t len)
static int32_t translateCast(SFunctionNode* pFunc, char* pErrBuf, int32_t len) {
// The number of parameters has been limited by the syntax definition
// uint8_t para1Type = ((SExprNode*)nodesListGetNode(pFunc->pParameterList, 0))->resType.type;
// The function return type has been set during syntax parsing
uint8_t para2Type = pFunc->node.resType.type;
// if (para2Type != TSDB_DATA_TYPE_BIGINT && para2Type != TSDB_DATA_TYPE_UBIGINT &&
// para2Type != TSDB_DATA_TYPE_VARCHAR && para2Type != TSDB_DATA_TYPE_NCHAR &&
// para2Type != TSDB_DATA_TYPE_TIMESTAMP) {
// return invaildFuncParaTypeErrMsg(pErrBuf, len, pFunc->functionName);
// }
// if ((para2Type == TSDB_DATA_TYPE_TIMESTAMP && IS_VAR_DATA_TYPE(para1Type)) ||
// (para2Type == TSDB_DATA_TYPE_BINARY && para1Type == TSDB_DATA_TYPE_NCHAR)) {
// return invaildFuncParaTypeErrMsg(pErrBuf, len, pFunc->functionName);
// }
int32_t para2Bytes = pFunc->node.resType.bytes;
if (IS_VAR_DATA_TYPE(para2Type)) {
@ -1468,6 +1458,11 @@ static int32_t translateCast(SFunctionNode* pFunc, char* pErrBuf, int32_t len) {
return buildFuncErrMsg(pErrBuf, len, TSDB_CODE_FUNC_FUNTION_ERROR,
"CAST function converted length should be in range [0, 1000]");
}
// add database precision as param
uint8_t dbPrec = pFunc->node.resType.precision;
addDbPrecisonParam(&pFunc->pParameterList, dbPrec);
return TSDB_CODE_SUCCESS;
}

4
source/libs/scalar/src/sclfunc.c
View File

@ -936,7 +936,9 @@ int32_t castFunction(SScalarParam *pInput, int32_t inputNum, SScalarParam *pOutp
case TSDB_DATA_TYPE_TIMESTAMP: {
int64_t timeVal;
if (inputType == TSDB_DATA_TYPE_BINARY || inputType == TSDB_DATA_TYPE_NCHAR) {
int32_t ret = convertStringToTimestamp(inputType, input, TSDB_TIME_PRECISION_MILLI, &timeVal);
int64_t timePrec;
GET_TYPED_DATA(timePrec, int64_t, GET_PARAM_TYPE(&pInput[1]), pInput[1].columnData->pData);
int32_t ret = convertStringToTimestamp(inputType, input, timePrec, &timeVal);
if (ret != TSDB_CODE_SUCCESS) {
*(int64_t *)output = 0;
} else {