[
https://issues.apache.org/jira/browse/BEAM-11696?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Kyle Weaver updated BEAM-11696:
-------------------------------
Description:
Reference:
[https://github.com/google/zetasql/blob/master/docs/functions-and-operators.md#logical_and]
Performs a logical AND operation on expression and returns the result.
Supported Argument Types: BOOL
Returned Data Types: BOOL
Example:
{code:java}
SELECT LOGICAL_AND(x) AS logical_and FROM UNNEST([null, null, null]) AS x;
+-------------+
| logical_and |
+-------------+
| false |
+-------------+
{code}
Problems:
After implementation, there is a problem:
* When input contains all null values:
{code:sql}
SELECT LOGICAL_AND(a) AS logical_and FROM UNNEST([null, null, null]) AS a;
{code}
the output is:
{code:java}
No matching signature for aggregate function LOGICAL_AND for argument types:
INT64. Supported signature: LOGICAL_AND(BOOL) {code}
which is same behavior as of BigQuery console. Though, it should
return null.
How to test: unit tests
was:
Reference:
[https://github.com/google/zetasql/blob/master/docs/functions-and-operators.md#logical_and]
Performs a logical AND operation on expression and returns the result.
Supported Argument Types: BOOL
Returned Data Types: BOOL
Example:
{code:java}
SELECT LOGICAL_AND(x) AS logical_and FROM UNNEST([null, null, null]) AS x;
+-------------+
| logical_and |
+-------------+
| false |
+-------------+
{code}
Problems:
After implementation, there is a problem:
* When input contains all null values, the output is:
{code:java}
No matching signature for aggregate function LOGICAL_AND for argument types:
INT64. Supported signature: LOGICAL_AND(BOOL) {code}
which is same behavior as of BigQuery console. Though, it should
return null.
How to test: unit tests
> NULL values don't work correctly when implementing LOGICAL_AND aggregation
> function in ZetaSQL
> ----------------------------------------------------------------------------------------------
>
> Key: BEAM-11696
> URL: https://issues.apache.org/jira/browse/BEAM-11696
> Project: Beam
> Issue Type: Bug
> Components: dsl-sql-zetasql
> Reporter: Sonam Ramchand
> Assignee: Kyle Weaver
> Priority: P3
> Fix For: Not applicable
>
>
> Reference:
> [https://github.com/google/zetasql/blob/master/docs/functions-and-operators.md#logical_and]
> Performs a logical AND operation on expression and returns the result.
> Supported Argument Types: BOOL
> Returned Data Types: BOOL
> Example:
>
> {code:java}
> SELECT LOGICAL_AND(x) AS logical_and FROM UNNEST([null, null, null]) AS x;
> +-------------+
> | logical_and |
> +-------------+
> | false |
> +-------------+
> {code}
>
> Problems:
> After implementation, there is a problem:
> * When input contains all null values:
> {code:sql}
> SELECT LOGICAL_AND(a) AS logical_and FROM UNNEST([null, null, null]) AS a;
> {code}
> the output is:
> {code:java}
> No matching signature for aggregate function LOGICAL_AND for argument types:
> INT64. Supported signature: LOGICAL_AND(BOOL) {code}
> which is same behavior as of BigQuery console. Though, it should
> return null.
> How to test: unit tests
>
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