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Merge pull request #15153 from taosdata/fix/TD-17511 

fix(query): forbid use null as input for first/last/last_row
This commit is contained in:
Ganlin Zhao 2022-07-20 10:46:43 +08:00 committed by GitHub
parent f93d465da7 af4ad5a837
commit bf71325184
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 21 additions and 1 deletions
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20
source/libs/function/src/builtins.c
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@ -1425,6 +1425,17 @@ static int32_t translateIrate(SFunctionNode* pFunc, char* pErrBuf, int32_t len)
}
static int32_t translateFirstLast(SFunctionNode* pFunc, char* pErrBuf, int32_t len) {
// forbid null as first/last input, since first(c0, null, 1) may have different number of input
int32_t numOfParams = LIST_LENGTH(pFunc->pParameterList);
for (int32_t i = 0; i < numOfParams; ++i) {
uint8_t nodeType = nodeType(nodesListGetNode(pFunc->pParameterList, i));
uint8_t paraType = ((SExprNode*)nodesListGetNode(pFunc->pParameterList, i))->resType.type;
if (IS_NULL_TYPE(paraType) && QUERY_NODE_VALUE == nodeType) {
return invaildFuncParaTypeErrMsg(pErrBuf, len, pFunc->functionName);
}
}
pFunc->node.resType = ((SExprNode*)nodesListGetNode(pFunc->pParameterList, 0))->resType;
return TSDB_CODE_SUCCESS;
}
@ -1435,6 +1446,15 @@ static int32_t translateFirstLastImpl(SFunctionNode* pFunc, char* pErrBuf, int32
uint8_t paraType = ((SExprNode*)pPara)->resType.type;
int32_t paraBytes = ((SExprNode*)pPara)->resType.bytes;
if (isPartial) {
int32_t numOfParams = LIST_LENGTH(pFunc->pParameterList);
for (int32_t i = 0; i < numOfParams; ++i) {
uint8_t nodeType = nodeType(nodesListGetNode(pFunc->pParameterList, i));
uint8_t pType = ((SExprNode*)nodesListGetNode(pFunc->pParameterList, i))->resType.type;
if (IS_NULL_TYPE(pType) && QUERY_NODE_VALUE == nodeType) {
return invaildFuncParaTypeErrMsg(pErrBuf, len, pFunc->functionName);
}
}
pFunc->node.resType =
(SDataType){.bytes = getFirstLastInfoSize(paraBytes) + VARSTR_HEADER_SIZE, .type = TSDB_DATA_TYPE_BINARY};
} else {

2
tests/system-test/2-query/last_row.py
View File

@ -221,7 +221,7 @@ class TDTestCase:
tdSql.execute("use testdb")
# bug need fix
tdSql.query("select last_row(c1 ,NULL) from testdb.t1")
tdSql.error("select last_row(c1 ,NULL) from testdb.t1")
error_sql_lists = [
"select last_row from testdb.t1",