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refactor some codes

This commit is contained in:
hjxilinx 2020-01-18 10:10:33 +08:00
parent 84a70d8a0e
commit 556fb54d8d
1 changed files with 16 additions and 4 deletions
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16
src/client/src/tscSQLParser.c
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@ -4432,6 +4432,8 @@ int32_t parseLimitClause(SQueryInfo* pQueryInfo, int32_t clauseIndex, SQuerySQL*
const char* msg1 = "slimit/soffset only available for STable query";
const char* msg2 = "function not supported on table";
const char* msg3 = "slimit/soffset can not apply to projection query";
const char* msg4 = "projection on super table required limitation along with order clause";
const char* msg5 = "ordered projection result too large";
// handle the limit offset value, validate the limit
pQueryInfo->limit = pQuerySql->limit;
@ -4458,11 +4460,21 @@ int32_t parseLimitClause(SQueryInfo* pQueryInfo, int32_t clauseIndex, SQuerySQL*
if (queryOnTags == true) { // local handle the metric tag query
pQueryInfo->command = TSDB_SQL_RETRIEVE_TAGS;
} else {
if (tscProjectionQueryOnSTable(pQueryInfo, 0) &&
(pQueryInfo->slimit.limit > 0 || pQueryInfo->slimit.offset > 0)) {
if (tscProjectionQueryOnSTable(pQueryInfo, 0)) {
if (pQueryInfo->order.orderColId != 0) {
if (pQueryInfo->limit.limit == -1) {
return invalidSqlErrMsg(pQueryInfo->msg, msg4);
} else if (pQueryInfo->limit.limit > 100000) { // the result set can not be larger than 10000
//todo use global config parameter
return invalidSqlErrMsg(pQueryInfo->msg, msg5);
}
}
if (pQueryInfo->slimit.limit > 0 || pQueryInfo->slimit.offset > 0) {
return invalidSqlErrMsg(pQueryInfo->msg, msg3);
}
}
}
if (pQueryInfo->slimit.limit == 0) {
tscTrace("%p limit 0, no output result", pSql);