Properties for Checksum Stage (DataStage®)

Default properties

These properties on the Stage tab take default values unless you set the properties explicitly.

Computation Mode

Use this property to specify whether the checksum value is generated from all available columns (the default), all columns except the ones specified, or only the columns specified.

If you select Use all columns except those specified, the following property is displayed:

Exclude Column

Select a column from the Exclude columns list. You can repeat this property to exclude multiple columns.

If you select Use only columns specified, the following property is displayed:

Compute Column

Select a column from the Compute columns list. You can repeat this property to include multiple columns in the computation of the checksum.

Optional properties

You can set these properties to further control how the checksum stage operates.

Buffer Output Column Name

Use this property to specify the name of the output column that contains the buffer that the checksum algorithm was run with. If you do not specify this property, no output column is generated.

Checksum Output Column Name

Use this property to specify the name of the output column that contains the checksum value. If you do not specify a name, the column is named Checksum.