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Fix type deduction error for sum aggregation

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This commit is contained in:
Zach41
2023-12-07 07:16:15 +00:00
committed by ob-robot
parent 3dd5be7901
commit 864a26e603
1 changed files with 7 additions and 2 deletions
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9
src/sql/resolver/expr/ob_raw_expr_deduce_type.cpp
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@ -1632,7 +1632,12 @@ int ObRawExprDeduceType::visit(ObAggFunRawExpr &expr)
// But for expression like sum(sum()), the outer sum() is generated by
// aggregation pushdown, so we don't need to accumulate precision for the outer expr.
if (T_FUN_SUM == expr.get_expr_type() && T_FUN_SUM != child_expr->get_expr_type()) {
if (ob_is_integer_type(obj_type)) {
if (child_expr->get_expr_type() == T_FUN_SYS_CAST
&& child_expr->has_flag(IS_OP_OPERAND_IMPLICIT_CAST)
&& ob_is_decimal_int(obj_type)) {
// child is implicit cast expr means precision already adjusted
// do nothing
} else if (ob_is_integer_type(obj_type)) {
const int16_t int_max_prec = ObAccuracy::MAX_ACCURACY2[0/*mysql mode*/][obj_type].get_precision();
result_precision = MAX(result_precision, int_max_prec) + OB_DECIMAL_LONGLONG_DIGITS;
result_precision = MIN(OB_MAX_DECIMAL_PRECISION, result_precision);
@ -1891,7 +1896,7 @@ int ObRawExprDeduceType::visit(ObAggFunRawExpr &expr)
expr.unset_result_flag(ZEROFILL_FLAG);
}
}
LOG_DEBUG("aggregate function deduced result type", K(result_type), K(need_add_cast), K(expr));
if (OB_SUCC(ret) && need_add_cast) {
result_type.set_calc_type(result_type.get_type());
result_type.set_calc_accuracy(result_type.get_accuracy());