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A detail outer join keeps all rows of data from the master source and the matching rows from the detail source. It discards the unmatched rows from the detail source.
When you join the sample tables with a detail outer join and the same condition, the result set includes the following data:
PART_ID
DESCRIPTION
SIZE
COLOR
1
Seat Cover
Large
Blue
2
Ash Tray
Small
NULL
3
Floor Mat
Medium
Black
Because no color is specified for the Ash Tray, the Integration Service populates the field with a NULL.
The following example shows the equivalent SQL statement:
SELECT * FROM PARTS_SIZE LEFT OUTER JOIN PARTS_COLOR ON (PARTS_SIZE.PART_ID1 = PARTS_COLOR.PART_ID2)