i have data:
stage name result
1 ab
1 aa
1 abc
1 cd
1 ca
2 ds
2 ad
2 ab
2 ac
2 cc

if "name" in stage 1 = "name" in stage 2, then result "x"
example:
stage name result
1 ab x
1 aa 0
1 abc 0
1 cd 0
1 ca 0
2 ds 0
2 ad 0
2 ab x
2 ac 0
2 cc 0
Please, help me!
Thanks a lot

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thanks alot
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