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The Transformation Language
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- UPPER
- VARIANCE
Creating Custom Functions
Custom Function API Reference

Transformation Language Reference

10.5.1
- 10.5.6
- 10.5
- 10.4.0

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DECOMPRESS

Decompresses data using the zlib 1.2.1 compression algorithm. Use the DECOMPRESS function on data that has been compressed with the COMPRESS function or a compression tool that uses the zlib 1.2.1 algorithm. If the session that decompresses the data uses a different data movement mode than the session that compressed the data, the output of the decompressed data may differ from the original data.

Syntax

DECOMPRESS( value, precision )

The following table describes the arguments for this command:

Argument	Required/ Optional	Description
value	Required	Binary datatype. Data that you want to decompress.
precision	Optional	Integer datatype.

Return Value

Decompressed binary value of the input value.

NULL if the input is a null value.

Example

Your organization has an online order service. You received compressed customer order data over a wide area network. You want to read the data using PowerCenter and load the data to a data warehouse. You can decompress each row of data using DECOMPRESS for the row. The

PowerCenter Integration Service

can then load the decompressed data to the target.

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