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Home/ Questions/Q 9282193
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Editorial Team
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Editorial Team
Asked: June 18, 20262026-06-18T18:18:46+00:00 2026-06-18T18:18:46+00:00

Currently I am using something like this: dbCreateTable db MyTable [ (Col1, (StringT, False)),

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Currently I am using something like this:

dbCreateTable db "MyTable" [ ("Col1", (StringT, False)), ("Col2", (StringT, False)) ]

which works fine, but i’d like to make “Col1” the primary key. Do i need to go back to raw SQL?

edit:
This still seems to hold:
“The part of creating a database from Haskell itself is not very
useful, for example you cannot express foreign- and primary keys,
indexes and constraints. Even the most simple database will need
one of these.”

From http://www.mijnadres.net/published/HaskellDB.pdf

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  1. Editorial Team
    Editorial Team
    2026-06-18T18:18:47+00:00Added an answer on June 18, 2026 at 6:18 pm

    As the edit notes, HaskellDB is not very good at creating tables at the moment. It’s best to build a database first, and then extract the info.

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