strongduanmu commented on code in PR #25424:
URL: https://github.com/apache/shardingsphere/pull/25424#discussion_r1185737737
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sql-parser/dialect/mysql/src/main/java/org/apache/shardingsphere/sql/parser/mysql/visitor/statement/MySQLStatementVisitor.java:
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@@ -441,7 +446,9 @@ public final ASTNode visitBooleanPrimary(final
BooleanPrimaryContext ctx) {
ExpressionSegment right = new
LiteralExpressionSegment(ctx.IS().getSymbol().getStopIndex() + 2,
ctx.stop.getStopIndex(), rightText);
String text = ctx.start.getInputStream().getText(new
Interval(ctx.start.getStartIndex(), ctx.stop.getStopIndex()));
ExpressionSegment left = (ExpressionSegment)
visit(ctx.booleanPrimary());
- String operator = "IS";
+ if (null != ctx.NULL()) {
+ right = null;
Review Comment:
> Can you refer
https://github.com/polardb/polardbx-sql/blob/cdd976850bdfc3264dff279198b6b06eb8641fbe/polardbx-optimizer/src/main/java/com/alibaba/polardbx/optimizer/parse/visitor/FastSqlToCalciteNodeVisitor.java#L5346-L5350
to extract `is` and `is not` as an operator, and keep the right to
LiteralExpressionSegment?
@kanha-gupta Can you take a look at this link? It provide an example to
convert to sql node.
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