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Unpivot data

sam2929 asked
Last Modified: 2017-12-07
I have table a
Id  class1
123. 001
123. 002

Then table B

Id. Class1 class2 class3

123.    002. 001 002

Table b has like 50 class1 till class 50

I don’t want to do or query is it easy way to join two tables and see if table a column1 data is in table b column 1 to 49.
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