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Re: pg_dump and boolean format

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On Aug 11, 2010, at 13:00 , Scott Frankel wrote:

> The pg docs say that booleans can be stored as 't', 'true', 'y', 'yes', or '1'.

Booleans are not "stored" as those literals: those are only acceptable literals (i.e., string representations) for boolean values.

> I'm using pg_dump to create an SQL script for importing into another database.  This will happen automatically and repeatedly.  Unfortunately, the other database (sqlite) is limited to only integer representation of booleans:  0 or 1.

One option is to use COPY to export the data in a format you like. For example: COPY (SELECT CAST(boolean_column AS INT) FROM my_table) TO STDOUT. Then write a script which reads the exported data files and loads them into your sqlite database. COPY WITH CSV would likely be helpful as well.

Michael Glaesemann
grzm seespotcode net




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