hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 2 Packages Projects Releases Wiki Activity

feat: add the rule to use-das when has variable assignments in sql

Browse Source 
Co-authored-by: leslieyuchen <leslieyuchen@gmail.com>
This commit is contained in:
obdev
2023-10-23 09:14:02 +00:00
committed by ob-robot
parent a46ee110fb
commit bacc417957
23 changed files with 170 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
src/sql/executor/ob_execute_result.cpp
View File

@ -103,6 +103,17 @@ int ObExecuteResult::open() const
if (OB_TRY_LOCK_ROW_CONFLICT != ret && OB_TRANSACTION_SET_VIOLATION != ret) {
LOG_WARN("open operator failed", K(ret));
}
} else if (!static_engine_root_->get_spec().plan_->var_init_exprs_.empty()) {
// Evaluate the var init expr in generated table, This is to be compatible with some of mysql's uses of variables
// Such as "select c1,(@rownum:= @rownum+1) as CCBH from t1,(SELECT@rownum:=0) B"
const ExprFixedArray &var_init_exprs = static_engine_root_->get_spec().plan_->var_init_exprs_;
for (int64_t i = 0; OB_SUCC(ret) && i < var_init_exprs.count(); i++) {
ObDatum *datum = NULL;
ObExpr *expr = var_init_exprs.at(i);
if (OB_FAIL(expr->eval(static_engine_root_->get_eval_ctx(), datum))) {
LOG_WARN("expr evaluate failed", K(ret));
}
}
}
return ret;
}