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| author | Bruce Momjian <bruce@momjian.us> | 1999-10-15 01:49:49 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 1999-10-15 01:49:49 +0000 |
| commit | 7acc237744b3e9a697959eec367adb44fff554a7 (patch) | |
| tree | 1650324239bd74896111cf5922c9463c60d788c5 /src/backend/catalog/indexing.c | |
| parent | 55fa71a9e9c766ec477f4cb41c630f1851fa2adc (diff) | |
| download | postgresql-7acc237744b3e9a697959eec367adb44fff554a7.tar.gz | |
This patch implements ORACLE's COMMENT SQL command.
>From the ORACLE 7 SQL Language Reference Manual:
-----------------------------------------------------
COMMENT
Purpose:
To add a comment about a table, view, snapshot, or
column into the data dictionary.
Prerequisites:
The table, view, or snapshot must be in your own
schema
or you must have COMMENT ANY TABLE system privilege.
Syntax:
COMMENT ON [ TABLE table ] |
[ COLUMN table.column] IS 'text'
You can effectively drop a comment from the database
by setting it to the empty string ''.
-----------------------------------------------------
Example:
COMMENT ON TABLE workorders IS
'Maintains base records for workorder information';
COMMENT ON COLUMN workorders.hours IS
'Number of hours the engineer worked on the task';
to drop a comment:
COMMENT ON COLUMN workorders.hours IS '';
The current patch will simply perform the insert into
pg_description, as per the TODO. And, of course, when
the table is dropped, any comments relating to it
or any of its attributes are also dropped. I haven't
looked at the ODBC source yet, but I do know from
an ODBC client standpoint that the standard does
support the notion of table and column comments.
Hopefully the ODBC driver is already fetching these
values from pg_description, but if not, it should be
trivial.
Hope this makes the grade,
Mike Mascari
(mascarim@yahoo.com)
Diffstat (limited to 'src/backend/catalog/indexing.c')
| -rw-r--r-- | src/backend/catalog/indexing.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/backend/catalog/indexing.c b/src/backend/catalog/indexing.c index 1e5c6252a4..2caffcbcf5 100644 --- a/src/backend/catalog/indexing.c +++ b/src/backend/catalog/indexing.c @@ -8,7 +8,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/catalog/indexing.c,v 1.47 1999/09/30 10:31:42 wieck Exp $ + * $Header: /cvsroot/pgsql/src/backend/catalog/indexing.c,v 1.48 1999/10/15 01:49:39 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -55,6 +55,9 @@ char *Name_pg_trigger_indices[Num_pg_trigger_indices] = {TriggerRelidIndex, TriggerConstrNameIndex, TriggerConstrRelidIndex}; +char *Name_pg_description_indices[Num_pg_description_indices] = {DescriptionObjIndex}; + + static HeapTuple CatalogIndexFetchTuple(Relation heapRelation, Relation idesc, |