Learn tAddCRCRow in Talend DI
In this video, we will learn how to use the tAddCRCRow in Talend DI. The tAddCRCRow component is used to calculate 'hash' value for a column or a set of columns.
The component receives input from other components, and will then derive a CRC column, based on key attributes.
The key attribute(s) can be configured as per the requirement. There are 3 algorithms to choose from while calculating CRC - CRC8, CRC16 & CRC32.
The CRC hash thus derived will be very useful in generating surrogate keys, identifying duplicates and performing joins.