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Again update C comments for pg_attribute.attislocal

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Bruce Momjian 2014-08-30 10:24:34 -04:00
parent 4b4b680c3d
commit d5d7d07765
1 changed files with 7 additions and 3 deletions
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10
src/include/catalog/pg_attribute.h
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@ -137,9 +137,13 @@ CATALOG(pg_attribute,1249) BKI_BOOTSTRAP BKI_WITHOUT_OIDS BKI_ROWTYPE_OID(75) BK
bool attisdropped; bool attisdropped;
/* /*
* Has a local definition (hence, do not drop when attinhcount is 0) * This flag specifies whether this column has ever had a local
* This is set and remains set if the column was _ever_ * definition. It is set for normal non-inherited columns, but also
* local/not-inherited, e.g. this can be set by ALTER TABLE NO INHERIT. * for columns that are inherited from parents if also explicitly listed
* in CREATE TABLE INHERITS. It is also set when inheritance is removed
* from a table with ALTER TABLE NO INHERIT. If the flag is set, the
* column is not dropped by a parent's DROP COLUMN even if this causes
* the column's attinhcount to become zero.
*/ */
bool attislocal; bool attislocal;