pgsql: Change FK trigger naming convention to fix self-referential FKs.

Change FK trigger naming convention to fix self-referential FKs.

Use names like "RI_ConstraintTrigger_a_NNNN" for FK action triggers and
"RI_ConstraintTrigger_c_NNNN" for FK check triggers. This ensures the
action trigger fires first in self-referential cases where the very same
row update fires both an action and a check trigger. This change provides
a non-probabilistic solution for bug #6268, at the risk that it could break
client code that is making assumptions about the exact names assigned to
auto-generated FK triggers. Hence, change this in HEAD only. No need for
forced initdb since old triggers continue to work fine.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/1e3b21dd5e1070d301153690c1751bef74f03fa4

Modified Files
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src/backend/commands/tablecmds.c | 26 ++++++++++++--------------
1 files changed, 12 insertions(+), 14 deletions(-)