If you have interest in the detailed protocol specification: PostgreSQL Frontend/Backend Protocol. See Limitation section for the parameters. You need to disable server-side prepared statements and enable the client-side implementation. Prestogres supports only simple query.įortunately, JDBC and ODBC clients implement prepared statements at client-side to be complatible with old PostgreSQL. PostgreSQL has 2 protocols to run a query: simple query and extended query.Įxtended query is a new protocol to support prepared statements (server-side prepared statements). columns All queries by JDBC or ODBC clients fail with "Prestogres doesn't support extended query" Select table_schema, table_name, column_name, is_nullable, data_typeįrom information_schema. The program receives following data through STDIN: Prestogres runs the program every time when an user connects. You need to set presto_external_auth_prog parameter in nf or auth_prog option in prestogres_hba.conf.
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