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Editorial Team
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Editorial Team
Asked: May 27, 20262026-05-27T11:52:21+00:00 2026-05-27T11:52:21+00:00

How to add size of the postgres array in SQLAlchemy? Like SQL type Integer[2]:

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How to add size of the postgres array in SQLAlchemy?

Like SQL type Integer[2]:

column = Column(postgresql.ARRAY(Integer), size=2)
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  1. Editorial Team
    Editorial Team
    2026-05-27T11:52:22+00:00Added an answer on May 27, 2026 at 11:52 am

    In PostgreSQL you just define the column as ARRAY of some base type, like integer[]. You can include dimensions in the type declaration, like integer[3][3], but they are without effect, as they are not enforced. I quote the manual here:

    However, the current implementation ignores any supplied array size
    limits, i.e., the behavior is the same as for arrays of unspecified
    length.

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