Lookup Transformation Functions on ETL-WIKI

Lookup Contains

Sat, 27 Apr 2024 00:00:00 +0000

Key	Value
Category	Transformation Function
Description	This function checks if key exists inside the input value and if it is returns matching value
Properties	Properties are very similar to Lookup Transformation Function

Sat, 27 Apr 2024 00:00:00 +0000

Key	Value
Category	Transformation Function
Description	This function checks input value matches regular expression and if it is returns matching value
Properties	Properties are very similar to Lookup Transformation Function

Mon, 01 Aug 2022 00:00:00 +0000

Key	Value
Category	Transformation Function
Description	This function substitutes values using mapping table. The mapping table can be populated manually or loaded from file/database.
Properties

Mon, 01 Aug 2022 00:00:00 +0000

Key	Value
Category	Transformation Function
Description	This function replaces keys with values inside text
Properties	Properties are very similar to Lookup Transformation Function

Mon, 01 Aug 2022 00:00:00 +0000

Key	Value
Category	Transformation Function
Description	Performing range lookups (or finding a key for a given range) is a common ETL operation in data warehousing scenarios. It’s especially useful for historical loads and late arriving fact situations, where you’re using type 2 dimensions and you need to locate the key which represents the dimension value for a given point in time.
Properties

Mon, 01 Aug 2022 00:00:00 +0000

SQL Lookup is the slowest transformation. It is used only when nothing else is working.