[pgpool-committers: 7896] pgpool: Fix query cache to not cache SQLValueFunctions (CURRENT_TIME, C

[Tatsuo Ishii]

Fix query cache to not cache SQLValueFunctions (CURRENT_TIME, CURRENT_USER etc.).

Checking SQLValueFunctions was missed whether to be cached or not and
they were regarded as non function objects. As a result they were
cached.

Also add more test cases.

Branch
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V3_7_STABLE

Details
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https://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=68a69a51f02272761c36e7476f86ffde0473aa59

Modified Files
--------------
src/test/regression/tests/006.memqcache/test.sh |  4 ++++
src/utils/pool_select_walker.c                  | 11 ++++++++++-
2 files changed, 14 insertions(+), 1 deletion(-)