danny0405 commented on a change in pull request #1066: [CALCITE-2843] Babel
parser should support PostgreSQL casting operator '::'
URL: https://github.com/apache/calcite/pull/1066#discussion_r291792271
##########
File path: babel/src/main/codegen/config.fmpp
##########
@@ -857,6 +858,16 @@ data: {
dropStatementParserMethods: [
]
+ # Binary operators tokens
+ binaryOperatorsTokens: [
+ {name: "PG_CAST", symbol: "::"}
+ ]
+
+ # Binary operators initialization
+ extraExpressions: [
+ "op = PostgreSQLCasting(list, exprContext)"
+ ]
Review comment:
These parse block hooks are not necessary, if you want to add a new sql
function parse, extend the expression parse block. See
https://github.com/apache/calcite/commit/7f33215ffaf9c0b8f4bef082913c910c77bf4427
for reference.
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