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This change defines SHLIB_PREREQS for the libpgport dependency, rather than using a makefile rule. This was broken in PG 12. Reported-by: Filip Janus Discussion: https://postgr.es/m/E5Dc85EGUY4wyG8cjAU0qoEdCJxGK_qhW1s9qSuYq9A@mail.gmail.com Author: Dagfinn Ilmari Mannsåker (for libpq) Backpatch-through: 12
src/interfaces/ecpg/README.dynSQL descriptor statements have the following shortcomings - input descriptors (USING DESCRIPTOR <name>) are not supported Reason: to fully support dynamic SQL the frontend/backend communication should change to recognize input parameters. Since this is not likely to happen in the near future and you can cover the same functionality with the existing infrastructure (using s[n]printf), I'll leave the work to someone else.