sorting - creating groups from related pairs -


i have list of parts in mssql db a=b, a=c, a=d want arrange in groups since b=c, b=d etc. way in database, search matches "d" , result a, b , c match. i'm using mssql. how go creating new table , inserting data a, b, c, , d in group 1, , if x=y, x=z x, y, z in group 2 , on?

╔═════════╦═══════╦═══════╗ ║ matchid ║ part1 ║ part2 ║ ╠═════════╬═══════╬═══════╣ ║       1 ║     ║ b     ║ ║       2 ║     ║ c     ║ ║       3 ║     ║ d     ║ ║       4 ║ x     ║ y     ║ ║       5 ║ x     ║ z     ║ ╚═════════╩═══════╩═══════╝

to

╔═════════╦═══════╦═══════╦═════════╗ ║ matchid ║ part1 ║ part2 ║ groupid ║ ╠═════════╬═══════╬═══════╬═════════╣ ║       1 ║     ║ b     ║       1 ║ ║       2 ║     ║ c     ║       1 ║ ║       3 ║     ║ d     ║       1 ║ ║       4 ║ x     ║ y     ║       2 ║ ║       5 ║ x     ║ z     ║       2 ║ ╚═════════╩═══════╩═══════╩═════════╝

the idea list parts without needing know possible combinations no matter 1 i'm looking for, if there's query might work on original format of data, maybe better


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