danny0405 commented on a change in pull request #1426: [CALCITE-3313] Override
getAllowedSignatures function for SqlRegexpReplaceFunction.
URL: https://github.com/apache/calcite/pull/1426#discussion_r319496048
##########
File path:
core/src/main/java/org/apache/calcite/sql/fun/SqlRegexpReplaceFunction.java
##########
@@ -72,6 +75,25 @@ public SqlRegexpReplaceFunction() {
}
return true;
}
+
+ @Override public String getAllowedSignatures(String opName) {
+ final StringBuilder ret = new StringBuilder();
+ ret.append(
+ SqlUtil.getAliasedSignature(this, opName,
+ ImmutableList.of(SqlTypeName.CHAR_TYPES,
+ SqlTypeName.CHAR_TYPES,
+ SqlTypeName.CHAR_TYPES)));
+ ret.append(NL);
+ ret.append(
+ SqlUtil.getAliasedSignature(this, opName,
+ ImmutableList.of(SqlTypeName.CHAR_TYPES,
+ SqlTypeName.CHAR_TYPES,
+ SqlTypeName.CHAR_TYPES,
+ SqlTypeName.INT_TYPES,
+ SqlTypeName.INT_TYPES,
Review comment:
The last 3 arguments are all optional.
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