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This reverts commit 45b7abe59e9485657ac9380f35d2d917dd0da25b. It turns out that the %name-prefix syntax without "=" does not work at all in pre-2.4 Bison. We are not prepared to make such a large jump in minimum required Bison version just to suppress a warning message in a version hardly any developers are using yet. When 3.0 gets more popular, we'll figure out a way to deal with this. In the meantime, BISONFLAGS=-Wno-deprecated is recommendable for anyone using 3.0 who doesn't want to see the warning.
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.