BITWISE_OR_AGG - MaxCompute - Alibaba Cloud Documentation Center

Aggregates input values based on the bitwise OR operation.

Usage notes

MaxCompute V2.0 provides additional functions. If the functions that you use involve new data types that are supported in the MaxCompute V2.0 data type edition, you must run a SET command to enable the MaxCompute V2.0 data type edition. The new data types include TINYINT, SMALLINT, INT, FLOAT, VARCHAR, TIMESTAMP, and BINARY.

Session level: To enable the MaxCompute V2.0 data type edition, you must add set odps.sql.type.system.odps2=true; before the SQL statement that you want to execute, and commit and execute them together.
Project level: The project owner can enable the MaxCompute V2.0 data type edition for the project based on the project requirements. The configuration takes effect after 10 to 15 minutes. To enable the MaxCompute V2.0 data type edition at the project level, run the following command:
```
setproject odps.sql.type.system.odps2=true;
```
For more information about setproject, see Project operations. For more information about the precautions that you must take when you enable the MaxCompute V2.0 data type edition at the project level, see Data type editions.

If you use an SQL statement that includes multiple aggregate functions and resources in your project are insufficient, a memory overflow issue may occur. We recommend that you optimize the SQL statement or purchase computing resources based on your business requirements.

Syntax

bigint bitwise_or_agg(bigint value)

Parameters

value: required. A value of the BIGINT type. The null value is not used for calculation.

Return value

A value of the BIGINT type is returned.

Examples

select id, bitwise_or_agg(v) from
    values (1L, 2L), (1L, 1L), (2L, null), (1L, null) t(id, v) group by id;

The following result is returned:

+------------+------------+
| id         | _c1        |
+------------+------------+
| 1          | 3          |
| 2          | NULL       |
+------------+------------+

Related functions

BITWISE_OR_AGG is an aggregate function. For more information about the functions that are used to calculate the average value of multiple input records and to aggregate parameters, see Aggregate functions.