alex-plekhanov commented on code in PR #12037:
URL: https://github.com/apache/ignite/pull/12037#discussion_r2152638395
##########
modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/sql/fun/IgniteStdSqlOperatorTable.java:
##########
@@ -226,7 +226,11 @@ public IgniteStdSqlOperatorTable() {
register(SqlStdOperatorTable.POSIX_REGEX_CASE_SENSITIVE);
register(SqlStdOperatorTable.NEGATED_POSIX_REGEX_CASE_INSENSITIVE);
register(SqlStdOperatorTable.NEGATED_POSIX_REGEX_CASE_SENSITIVE);
- register(SqlLibraryOperators.REGEXP_REPLACE);
+ register(SqlLibraryOperators.REGEXP_REPLACE_2);
Review Comment:
We only supported before:
`REGEXP_REPLACE(STRING, STRING, STRING, [INT, [INT, [STRING]]])` (Oracle
syntax)
This syntax corresponds to operators: REGEXP_REPLACE_3, REGEXP_REPLACE_4,
REGEXP_REPLACE_5_ORACLE, REGEXP_REPLACE_6
Let's keep it for compatibility. We don't need REGEXP_REPLACE_2 - it's some
REDSHIFT syntax.
Corresponding RexImplTable change:
```
defineReflective(REGEXP_REPLACE_3,
BuiltInMethod.REGEXP_REPLACE3.method,
BuiltInMethod.REGEXP_REPLACE4.method,
BuiltInMethod.REGEXP_REPLACE5_OCCURRENCE.method,
BuiltInMethod.REGEXP_REPLACE6.method);
```
Let's also add one test (only one, no more) for each new operator (4-6
arguments) to `StdSqlOperatorsTest`, to check that each operator is correctly
binded to implementator.
##########
modules/calcite/src/main/java/org/apache/ignite/internal/processors/query/calcite/exec/exp/IgniteRexBuilder.java:
##########
@@ -58,8 +58,24 @@ public IgniteRexBuilder(RelDataTypeFactory typeFactory) {
return super.makeLiteral(bd, type, type.getSqlTypeName());
}
- if (TypeUtils.hasScale(type) && SqlTypeUtil.isNumeric(type))
- return super.makeLiteral(bd.setScale(type.getScale(),
RoundingMode.HALF_UP), type, typeName);
+ if (SqlTypeUtil.isNumeric(type)) {
+ boolean dfltDecimal = SqlTypeName.DECIMAL ==
type.getSqlTypeName() && bd.scale() > 0
+ &&
typeFactory.getTypeSystem().getDefaultScale(SqlTypeName.DECIMAL) ==
type.getScale()
+ &&
typeFactory.getTypeSystem().getDefaultPrecision(SqlTypeName.DECIMAL) ==
type.getPrecision();
+
+ // Keeps scaled values for literals like DECIMAL (converted to
DECIMAL(32676, 0)) like in Postgres,
+ // keeping actual scale. Example: 2::FLOAT is "2", not "2.0".
+ if (dfltDecimal) {
+ int precision = Math.max(bd.precision(), bd.scale());
Review Comment:
TYPEOF(0.1) returns DECIMAL(2, 1)
TYPEOF(0.1::DECIMAL) returns DECIMAL(1, 1)
TYPEOF(0::DECIMAL) returns DECIMAL(32767, 0)
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