Developer Transformation Guide

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Advanced Properties

Configure the persistent lookup cache and connection to a relational database in the advanced properties. The properties that appear are based on the type of lookup source.

The following table describes advanced properties for each type of lookup source:

Property	Lookup Source Type	Description
Lookup Cache Persistent	Flat file, reference table, relational lookup	Indicates whether the Integration Service uses a persistent lookup cache, which consists of at least two cache files. If a Lookup transformation is configured for a persistent lookup cache and persistent lookup cache files do not exist, the Integration Service creates the files.
Case Sensitive String Comparison	Flat file	The Integration Service uses case-sensitive string comparisons when performing lookups on string columns.
Null Ordering	Flat file	Determines how the Integration Service orders null values. You can choose to sort null values high or low. By default, the Integration Service sorts null values high. This overrides the Integration Service configuration to treat nulls in comparison operators as high, low, or null. For relational lookups, null ordering is based on the database default value.
Sorted Input	Flat file	Determines whether the data in source is already sorted on Lookup Transformation key and data ports. When set to TRUE, Informatica skips sorting of data while building a cache for Lookup results. Default is false.
Tracing Level	Flat file, logical data object, reference table, relational lookup	Sets the amount of detail that appears in the log for this transformation. You can choose terse, normal, verbose initialization, or verbose data. Default is normal.
Lookup policy on multiple match	Flat file	Determines the result when the lookup query finds multiple matches. Choose one of the following methods: Return First Row Return Last Row Report Error Return Any Row Return All Rows Default is Return Any Row.
Ignore null values that match	Flat file	Ignore null values that match when performing lookups.
Dynamic lookup cache	Flat file	Update lookup cache with unfound or new lookup values.
Update Else Insert	Reference table, relational lookup	Applies to dynamic lookup cache only. The Integration Service updates the row in the cache if the row type entering the Lookup transformation is update, the row exists in the index cache, and the cache data is different than the existing row. The Integration Service inserts the row in the cache if it is new.
Insert Else Update	Reference table, relational lookup	Applies to dynamic lookup cache only. The Integration Service inserts the row in the cache if the row type entering the Lookup transformation is insert and it is new. If the row exists in the index cache but the data cache is different than the current row, the Integration Service updates the row in the data cache.
Output Old Value on Update	Reference table, relational lookup	The Integration Service outputs the value that existed in the cache before it updated the row. Otherwise, the Integration Service outputs the updated value that it writes in the cache.
Update Dynamic Cache Condition	Reference table, relational lookup	Applies to dynamic lookup cache only. An expression that indicates whether to update the dynamic cache. The Integration Service updates the cache when the condition is true and the data exists in the cache. Default is true.
Connection	Reference table, relational lookup	Connection to the relational database that contains the relational lookup source. You can use a parameter for the connection. For reference table lookups, this field is read-only.
Sorted Input	Flat file	Indicates that input data is presorted by groups.
Datetime Format	Flat file	Define a datetime format and field width. Milliseconds, microseconds, or nanoseconds formats have a field width of 29. If you do not select a datetime format for a port, you can enter any datetime format. Default is YYYY-MM-DD HH24:MI:SS. The Datetime format does not change the size of the port. This field is read-only.
Thousand Separator	Flat file	Value is None. This field is read-only.
Decimal Separator	Flat file	Value is a period. This field is read-only.

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Developer Transformation Guide

Developer Transformation Guide

Advanced Properties

Advanced Properties