Re: Schema variables - new implementation for Postgres 15+1

On Sun, Apr 10, 2022 at 08:30:39PM +0200, Pavel Stehule wrote:
> I am sending fresh rebased patch + separation to more patches. This split
> is initial, and can be changed later

The 0001 patch requires this, but it's not included until 0003.
src/include/commands/session_variable.h

Each patch should compile and pass tests with the preceding patches, without
the following patches. I think the regression tests should be included with
their corresponding patch. Maybe it's ok to separate out the changes for
pg_dump, docs, and psql - but they'd have to be merged together eventually.
I realize some of this runs counter to Julien's suggestion to split patches.

The version should be changed:
+ if (fout->remoteVersion < 150000)

I enabled these, which causes the regression tests fail:

+#define COPY_PARSE_PLAN_TREES
+#define WRITE_READ_PARSE_PLAN_TREES
+#define RAW_EXPRESSION_COVERAGE_TEST

/home/pryzbyj/src/postgres/src/test/regress/results/session_variables.out 2022-04-10 15:37:32.926306124 -0500
@@ -16,7 +16,7 @@
SET ROLE TO var_test_role;
-- should fail
LET var1 = 10;
-ERROR: permission denied for session variable var1
+ERROR: unrecognized node type: 368
...