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Adjust nodeFunctionscan.c to reset transient memory context between calls

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to the table function, thus preventing memory leakage accumulation across
calls.  This means that SRFs need to be careful to distinguish permanent
and local storage; adjust code and documentation accordingly.  Patch by
Joe Conway, very minor tweaks by Tom Lane.
This commit is contained in:
Tom Lane
2002-08-29 17:14:33 +00:00
parent 0201dac1c3
commit e4186762ff
10 changed files with 154 additions and 134 deletions
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10
contrib/pgstattuple/README.pgstattuple
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@ -1,4 +1,4 @@
pgstattuple README 2002/08/22 Tatsuo Ishii
pgstattuple README 2002/08/29 Tatsuo Ishii
1. What is pgstattuple?
@ -40,15 +40,15 @@ free_percent -- free space in %
3. Using pgstattuple
pgstattuple may be called as a SRF (set returning function) and is
pgstattuple may be called as a table function and is
defined as follows:
CREATE OR REPLACE FUNCTION pgstattuple(text) RETURNS SETOF pgstattuple_view
CREATE OR REPLACE FUNCTION pgstattuple(text) RETURNS pgstattuple_type
AS 'MODULE_PATHNAME', 'pgstattuple'
LANGUAGE 'c' WITH (isstrict);
The argument is the table name. Note that pgstattuple never
returns more than 1 tuple.
The argument is the table name. Note that pgstattuple only returns
one row.
4. Notes