Get all the tables involved in a SELECT query in PostgreSQL using `libpq'

StackOverflow https://stackoverflow.com/questions/21209882

  •  29-09-2022
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Question

Is it possible to get the names or (Oid's) for all queried tables with libpq? If there exists a generic standard SQL way i would prefer it.

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Solution

It's not standard, but the Postgres EXPLAIN command can give you (more than) what you want.

http://www.postgresql.org/docs/9.3/static/sql-explain.html

If you use the JSON output format, the table names are found in the "Relation Name" attributes of the "Plan" objects.

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