问题
I'm using a Derived Column Task to change column data using a CASE WHEN statement. However, I need to be able to say..
SQL CODE WOULD BE:
CASE WHEN Column01 LIKE '%i%' THEN '0' ELSE '1' END
In SSIS Expression Language that would be:
[Column01] == "i" ? "0" : "1" (that's for equals i, not, LIKE %i%.
Is it possible to use a LIKE operator?
回答1:
I believe you'll want to use the FINDSTRING function.
FINDSTRING(character_expression, searchstring, occurrence)
...
FINDSTRING returns null if either character_expression or searchstring are null.
回答2:
I know it is an old question, but these days I found a good answer on web.
If you want a expression for Contains like '%value%' you could use :
FINDSTRING(col, "value", 1) > 0`
If you want a expression for Start with like 'value%' you could use :
FINDSTRING(col, "value", 1) == 1
And finally, if you want a expression for End with like '%value' you could use :
REVERSE(LEFT(REVERSE(col), X)) == "value"
More details look this useful resource : Basic SSIS Equivalents to T-SQL's LIKE
来源：https://stackoverflow.com/questions/4739230/is-it-possible-to-perform-a-like-statement-in-a-ssis-expression