[pgpool-committers: 431] pgpool: Fix is_select_query() in EXPLAIN case.

[Tatsuo Ishii]

Fix is_select_query() in EXPLAIN case.
EXPLAIN without ANALYZE can be load balanced but actually it was not.
Also add checking for the case EXPLAIN ANALYZE SELECT...
If the SELECT uses writing functions, it should not be load balanced.
Problem reported by Nicolas Amato:
Subject: [pgpool-general: 625] exclude EXPLAIN from the pgpool.

Branches
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feature/watchdog
master

Details
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http://git.postgresql.org/gitweb?p=pgpool2.git;a=commitdiff;h=dca9ee1d534238f4ad524ed6bd25959780abaa1a

Modified Files
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pool_process_query.c |   41 ++++++++++++++++++++++++++++++++++-------
1 files changed, 34 insertions(+), 7 deletions(-)