The postgreSQL version is needed internally in order to make the code work
because for example the type of funcctx->max_calls changed on 9.6
uint64_t result_count = 0;
#if PGSQL_VERSION > 95
funcctx->max_calls = result_count;
funcctx->max_calls = (uint32_t)result_count;
PGSQL_VERSION is a result of a manipulation of the version found using
FindPostgres.cmake (which uses pg_config --version)
>From this message:
I deduced that in the code I can use
I made the following experiment:
#define STRINGIFY(s) XSTRINGIFY(s)
#define XSTRINGIFY(s) #s
#pragma message ("The value PGSQL_VERSION: " STRINGIFY(PGSQL_VERSION))
#pragma message ("The value PG_CATALOG_VERSION: " STRINGIFY(PG_CATALOG_VERSION))
I have this result:
note: #pragma message: The value PGSQL_VERSION: 93
So PG_CATALOG_VERSION is not defined, then I went to see the doxygen page to
find out which file I have to include to get the definition.
But PG_CATALOG_VERSION its not there.
So, what am I missing?
I have no problem on doing more manipulations to get a value that I can use in
the #if PGSQL_VERSION > 95 comparison (like 100 for postgreSQL 10betaX) but if
PG_CATALOG_VERSION is considered the best thing to look at, where can I find it?