Developer Transformation Guide

10.5
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- 10.4.1
- 10.4.0

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Normal Join

With a normal join, the Data Integration Service discards all rows of data from the master and detail source that do not match, based on the condition.

For example, you have two sources of data for auto parts called PARTS_SIZE and PARTS_COLOR.

The PARTS_SIZE data source is the master source and contains the following data:

PART_ID1	DESCRIPTION	SIZE
1	Seat Cover	Large
2	Ash Tray	Small
3	Floor Mat	Medium

The PARTS_COLOR data source is the detail source and contains the following data:

PART_ID2	DESCRIPTION	COLOR
1	Seat Cover	Blue
3	Floor Mat	Black
4	Fuzzy Dice	Yellow

To join the two tables by matching the PART_IDs in both sources, you set the condition as follows:

PART_ID1 = PART_ID2

When you join these tables with a normal join, the result set includes the following data:

PART_ID	DESCRIPTION	SIZE	COLOR
1	Seat Cover	Large	Blue
3	Floor Mat	Medium	Black

The following example shows the equivalent SQL statement:

SELECT * FROM PARTS_SIZE, PARTS_COLOR WHERE PARTS_SIZE.PART_ID1 = PARTS_COLOR.PART_ID2

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Developer Transformation Guide

Developer Transformation Guide

Normal Join

Normal Join