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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2002-09-22 19:42:52 +0000 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2002-09-22 19:42:52 +0000 |
| commit | c328b6dd8bd85d91a0fd465c30b0bb352ea51e2b (patch) | |
| tree | 1e519e14923a8f0021b4ee1ac08dcf619ada1f5d /doc/src | |
| parent | 634e440b582e9b4dcf7d7626964c9f0767dd7f70 (diff) | |
| download | postgresql-c328b6dd8bd85d91a0fd465c30b0bb352ea51e2b.tar.gz postgresql-c328b6dd8bd85d91a0fd465c30b0bb352ea51e2b.zip | |
Replace pg_attribute.attisinherited with attislocal and attinhcount
columns, to allow more correct behavior in multiple-inheritance cases.
Patch by Alvaro Herrera, review by Tom Lane.
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/catalogs.sgml | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/doc/src/sgml/catalogs.sgml b/doc/src/sgml/catalogs.sgml index 01dfe6ad73b..1a3765ab633 100644 --- a/doc/src/sgml/catalogs.sgml +++ b/doc/src/sgml/catalogs.sgml @@ -1,6 +1,6 @@ <!-- Documentation of the system catalogs, directed toward PostgreSQL developers - $Header: /cvsroot/pgsql/doc/src/sgml/catalogs.sgml,v 2.60 2002/09/18 21:35:20 tgl Exp $ + $Header: /cvsroot/pgsql/doc/src/sgml/catalogs.sgml,v 2.61 2002/09/22 19:42:50 tgl Exp $ --> <chapter id="catalogs"> @@ -822,12 +822,22 @@ </row> <row> - <entry>attisinherited</entry> + <entry>attislocal</entry> <entry><type>bool</type></entry> <entry></entry> <entry> - This column is inherited from some other relation. An inherited - column cannot be dropped nor renamed. + This column is defined locally in the relation. Note that a column may + be locally defined and inherited simultaneously. + </entry> + </row> + + <row> + <entry>attinhcount</entry> + <entry><type>int4</type></entry> + <entry></entry> + <entry> + The number of direct ancestors this column has. A column with a + nonzero number of ancestors cannot be dropped nor renamed. </entry> </row> @@ -1213,8 +1223,8 @@ <entry></entry> <entry> 'c' = check constraint, - 'f' = foreign key constraint, - 'p' = primary key constraint, + 'f' = foreign key constraint, + 'p' = primary key constraint, 'u' = unique constraint </entry> </row> @@ -3316,7 +3326,7 @@ when storing a value of this type. It applies to storage on disk as well as most representations of the value inside <productname>PostgreSQL</>. - When multiple values are stored consecutively, such + When multiple values are stored consecutively, such as in the representation of a complete row on disk, padding is inserted before a datum of this type so that it begins on the specified boundary. The alignment reference is the beginning |