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fix resultset's scale and precision not compatible with oracle

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This commit is contained in:
obdev
2023-04-26 13:00:40 +00:00
committed by ob-robot
parent faff48575c
commit 17ea70672e
1 changed files with 12 additions and 0 deletions
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12
src/observer/mysql/ob_mysql_result_set.cpp
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@ -57,6 +57,7 @@ int ObMySQLResultSet::to_mysql_field(const ObField &field, ObMySQLField &mfield)
}
ObScale decimals = mfield.accuracy_.get_scale();
ObPrecision pre = mfield.accuracy_.get_precision();
// TIMESTAMP、UNSIGNED通过map直接映射
if (0 == field.type_name_.case_compare("SYS_REFCURSOR")) {
mfield.type_ = MYSQL_TYPE_CURSOR;
@ -69,6 +70,17 @@ int ObMySQLResultSet::to_mysql_field(const ObField &field, ObMySQLField &mfield)
mfield.type_owner_ = field.type_owner_;
mfield.type_name_ = field.type_name_;
// In this scenario, the precsion and scale of number are undefined,
// and the internal implementation of ob is represented by an illegal value (-1, -85).
// However, oracle is represented by 0. In order to be compatible with
// the behavior of oracle, it is corrected to 0 here.
if ((ObNumberType == field.type_.get_type()
|| ObUNumberType == field.type_.get_type())
&& lib::is_oracle_mode()) { // was decimal
decimals = (decimals==NUMBER_SCALE_UNKNOWN_YET ? 0:decimals);
pre = (pre==PRECISION_UNKNOWN_YET ? 0:pre);
}
mfield.accuracy_.set_precision(pre);
mfield.accuracy_.set_scale(decimals);
mfield.inout_mode_ = field.inout_mode_;
if (OB_SUCC(ret)