robinyqiu commented on a change in pull request #13817:
URL: https://github.com/apache/beam/pull/13817#discussion_r577258736
##########
File path:
sdks/java/extensions/sql/src/main/java/org/apache/beam/sdk/extensions/sql/impl/transform/BeamBuiltinAggregations.java
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@@ -453,4 +462,57 @@ public Long extractOutput(Accum accum) {
return accum.bitAnd;
}
}
+
+ public static class LogicalAnd extends CombineFn<Boolean, LogicalAnd.Accum,
Boolean> {
+ static class Accum {
+ // Initially, input is empty
+ boolean isEmpty = true;
+ // true if any null value is seen in the input, null values are to be
ignored
+ boolean isNull = false;
+ // logical_and operation result
+ boolean logicalAnd = Boolean.parseBoolean(null);
+ }
+
+ @Override
+ public Accum createAccumulator() {
+ return new Accum();
+ }
+
+ @Override
+ public Accum addInput(Accum accum, Boolean input) {
+ if (input == null) {
+ accum.isNull = true;
+ accum.isEmpty = false;
+ return accum;
+ }
+ accum.isEmpty = false;
+ accum.logicalAnd = accum.logicalAnd && input;
+ return accum;
+ }
+
+ @Override
+ public Accum mergeAccumulators(Iterable<Accum> accums) {
+ LogicalAnd.Accum merged = createAccumulator();
+ for (LogicalAnd.Accum accum : accums) {
+ if (accum.isNull) {
+ // ignore null case
+ continue;
Review comment:
Hi @sonam-vend, please see the comment above to fix the problem.
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