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implement sql_mode NO_UNSIGNED_SUBTRACTION

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This commit is contained in:
ls0
2021-08-25 11:09:16 +08:00
committed by wangzelin.wzl
parent e142f566bd
commit cc0e6b8c12
4 changed files with 49 additions and 2 deletions
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11
src/sql/engine/expr/ob_expr_minus.cpp
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@ -42,8 +42,12 @@ int ObExprMinus::calc_result_type2(
static const int64_t CARRY_OFFSET = 1;
ObScale scale = SCALE_UNKNOWN_YET;
ObPrecision precision = PRECISION_UNKNOWN_YET;
const ObSQLSessionInfo *session = nullptr;
bool is_oracle = share::is_oracle_mode();
if (OB_FAIL(ObArithExprOperator::calc_result_type2(type, type1, type2, type_ctx))) {
if (OB_ISNULL(session = type_ctx.get_session())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("failed to get mysession", K(ret));
} else if (OB_FAIL(ObArithExprOperator::calc_result_type2(type, type1, type2, type_ctx))) {
LOG_WARN("fail to calc result type", K(ret), K(type), K(type1), K(type2));
} else if (is_oracle && type.is_oracle_decimal()) {
type.set_scale(ORA_NUMBER_SCALE_UNKNOWN_YET);
@ -78,6 +82,11 @@ int ObExprMinus::calc_result_type2(
} else {
type.set_precision(precision);
}
if (share::is_mysql_mode() && is_no_unsigned_subtraction(session->get_sql_mode())) {
ObObjType convert_type = type.get_type();
convert_unsigned_type_to_signed(convert_type);
type.set_type(convert_type);
}
LOG_DEBUG("calc_result_type2", K(scale), K(type1), K(type2), K(type), K(precision));
}
return ret;