ambition119 commented on a change in pull request #1209: [CALCITE-2601] Support
REVERSE(str) in SqlFunctions
URL: https://github.com/apache/calcite/pull/1209#discussion_r284536639
##########
File path:
core/src/main/java/org/apache/calcite/sql/fun/SqlStdOperatorTable.java
##########
@@ -1501,6 +1501,16 @@ public SqlOperandCountRange getOperandCountRange() {
OperandTypes.CHARACTER,
SqlFunctionCategory.STRING);
+ public static final SqlFunction REVERSE =
+ new SqlFunction(
+ "REVERSE",
+ SqlKind.REVERSE,
+ ReturnTypes.ARG0_NULLABLE_VARYING,
+ null,
Review comment:
before PR code like:
```java
@LibraryOperator(libraries = {MYSQL})
public static final SqlFunction JSON_PRETTY =
SqlStdOperatorTable.JSON_PRETTY;
```
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