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Speed up COPY into tables with DEFAULT nextval()

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Previously the presence of a nextval() prevented the
use of batch-mode COPY.  This patch introduces a
special case just for nextval() functions. In future
we will introduce a general case solution for
labelling volatile functions as safe for use.
This commit is contained in:
Simon Riggs
2014-01-20 17:22:38 +00:00
parent 74a72ec208
commit 4d1e2aeb1a
3 changed files with 130 additions and 2 deletions
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src/include/optimizer/clauses.h
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@@ -61,6 +61,7 @@ extern bool contain_subplans(Node *clause);
extern bool contain_mutable_functions(Node *clause);
extern bool contain_volatile_functions(Node *clause);
extern bool contain_volatile_functions_not_nextval(Node *clause);
extern bool contain_nonstrict_functions(Node *clause);
extern bool contain_leaky_functions(Node *clause);