Guibo-Pan commented on a change in pull request #6576: [FLINK-10145][table] Add
replace supported in TableAPI and SQL
URL: https://github.com/apache/flink/pull/6576#discussion_r211475986
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File path:
flink-libraries/flink-table/src/main/scala/org/apache/flink/table/functions/sql/ScalarSqlFunctions.scala
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@@ -67,6 +67,14 @@ object ScalarSqlFunctions {
OperandTypes.ONE_OR_MORE,
SqlFunctionCategory.STRING)
+ val REPLACE = new SqlFunction(
Review comment:
I use SqlStdOperatorTable.REPLACE at first, however that REPLACE function
can not handle null params, so I create a new function which refer to
SqlStdOperatorTable.REPLACE.
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