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Using the  Derived Column Transformation editor in an SSIS 2008 Data Flow

Posted on 2014-04-01
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Last Modified: 2016-02-10
Hi,
I am trying to replace  the following  string pattern
0 0 0 0

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with NULLs  in an SSIS Data Flow. In a Derived Column Transformation I have entered the following expression
[MSTUB-xInt_Only-Rev-Dt] == " 0 0 0 0" ? NULL(DT_WSTR,10) : SUBSTRING([MSTUB-xInt_Only-Rev-Dt],5,4) + "-" + SUBSTRING([MSTUB-xInt_Only-Rev-Dt],3,2) + "-" + SUBSTRING([MSTUB-xInt_Only-Rev-Dt],1,2)

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but the pattern is still getting through.
Any help appreciated. Thanks
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Question by:blossompark
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5 Comments
 

Author Comment

by:blossompark
ID: 39971596
below is a grab of the Data VIewer showing the still present values
t
0
 

Author Comment

by:blossompark
ID: 39971639
Here is  the input and output to the transformation task
and the expression in the task used to filter this column
[MSTUB-xInt_Only-Rev-Dt] == "00000000" || [MSTUB-xInt_Only-Rev-Dt] == "0 0 0 0" || [MSTUB-xInt_Only-Rev-Dt] == "0 0- 0- 0" ? NULL(DT_WSTR,10) : SUBSTRING([MSTUB-xInt_Only-Rev-Dt],5,4) + "-" + SUBSTRING([MSTUB-xInt_Only-Rev-Dt],3,2) + "-" + SUBSTRING([MSTUB-xInt_Only-Rev-Dt],1,2)

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ipop
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Author Comment

by:blossompark
ID: 39971664
tried this also, result is the same as above
[MSTUB-xInt_Only-Rev-Dt] == "0" + " " + "0" + " " + "0" + " " + "0" ? NULL(DT_WSTR,10) : SUBSTRING([MSTUB-xInt_Only-Rev-Dt],5,4) + "-" + SUBSTRING([MSTUB-xInt_Only-Rev-Dt],3,2) + "-" + SUBSTRING([MSTUB-xInt_Only-Rev-Dt],1,2)

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0
 

Accepted Solution

by:
blossompark earned 0 total points
ID: 39972416
USing TRIM solves the issue
TRIM([MSTUB-xInt_Only-Rev-Dt]) == "0 0 0 0" ? NULL(DT_WSTR,10) : SUBSTRING([MSTUB-xInt_Only-Rev-Dt],5,4) + "-" + SUBSTRING([MSTUB-xInt_Only-Rev-Dt],3,2) + "-" + SUBSTRING([MSTUB-xInt_Only-Rev-Dt],1,2)

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0
 

Author Closing Comment

by:blossompark
ID: 39982471
USing TRIM solves the issue
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