Merge Join

Description

The Merge Join transform performs a classic merge join between data sets with data coming from two different input transforms. Join options include INNER, LEFT OUTER, RIGHT OUTER, and FULL OUTER.

Options

Option Description

Commit size

The number of rows to change (insert / update) before running a commit.

Connection

The database connection to which data is written.

Don’t perform any updates

If enabled, the values in the database are never updated;only inserts are performed.

Key Lookup table

Allows you to specify a list of field values and comparators. You can use the following comparators: =, = ~NULL, <>, <, ⇐, >, >=, LIKE, BETWEEN, IS NULL, IS NOT NULL

SQL button

Click SQL to generate the SQL to create the table and indexes for correct operation.

Transform name

Name of the transform; this name has to be unique in a single pipeline.

Target schema

The name of the Schema for the table to which data is written. This is important for data sources that allow for table names with periods in them.

Target table

Name of the table in which you want to do the insert or update.

Update Fields

Allows you to specify all fields in the table you want to insert/update including the keys. Avoid updates on certain fields by specifying N in the update column.

Metadata Injection Support

All fields of this transform support metadata injection. You can use this transform with Metadata Injection to pass metadata to your pipeline at runtime.