DonnyZone commented on a change in pull request #1216: [CALCITE-3072] Generate
right SQL for FLOOR&SUBSTRING functions in SparkSqlDialect
URL: https://github.com/apache/calcite/pull/1216#discussion_r285325702
##########
File path:
core/src/main/java/org/apache/calcite/sql/dialect/SparkSqlDialect.java
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@@ -55,6 +70,32 @@ public SparkSqlDialect(SqlDialect.Context context) {
SqlNode fetch) {
unparseFetchUsingLimit(writer, offset, fetch);
}
+
+ @Override public void unparseCall(SqlWriter writer, SqlCall call,
+ int leftPrec, int rightPrec) {
+ if (call.getOperator() == SqlStdOperatorTable.SUBSTRING) {
+ SqlUtil.unparseFunctionSyntax(SPARKSQL_SUBSTRING, writer, call);
+ } else {
+ switch (call.getKind()) {
+ case FLOOR:
+ if (call.operandCount() != 2) {
+ super.unparseCall(writer, call, leftPrec, rightPrec);
Review comment:
Done. This rewriting logic is similar to that in `PostgresqlSqlDialect` for
[CALCITE-1798](https://issues.apache.org/jira/browse/CALCITE-1798). Add a test
case for one operand.
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