yujun777 commented on code in PR #44732:
URL: https://github.com/apache/doris/pull/44732#discussion_r1862389338
##########
fe/fe-core/src/main/java/org/apache/doris/nereids/util/ExpressionUtils.java:
##########
@@ -207,6 +207,22 @@ public static Expression or(Collection<Expression>
expressions) {
return combineAsLeftDeepTree(Or.class, expressions);
}
+ public static Expression getFalse(Expression expression) {
+ if (expression.nullable()) {
+ return new And(new IsNull(expression), new
NullLiteral(BooleanType.INSTANCE));
+ } else {
+ return BooleanLiteral.FALSE;
+ }
+ }
+
+ public static Expression getTrue(Expression expression) {
Review Comment:
> maybe trueOrNull is a better name?
fix
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