[GitHub] [shardingsphere] RaigorJiang commented on a diff in pull request #24667: Fix mysql cast function parsing error (#24637)

["RaigorJiang (via GitHub)" <gi...@apache.org>]

RaigorJiang commented on code in PR #24667:
URL: https://github.com/apache/shardingsphere/pull/24667#discussion_r1141247366


##########
sql-parser/dialect/mysql/src/main/java/org/apache/shardingsphere/sql/parser/mysql/visitor/statement/impl/MySQLStatementSQLVisitor.java:
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@@ -907,7 +908,19 @@ public final ASTNode visitCastFunction(final CastFunctionContext ctx) {
                 result.getParameters().add((LiteralExpressionSegment) expr);
             }
         }
-        result.getParameters().add((DataTypeSegment) visit(ctx.dataType()));
+        if (ctx.dataType() != null) {

Review Comment:
   Please put `null` to the left of the equals sign, thank you!



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