Re: Strange bug... - Mailing list pgadmin-support
| From | Dave Page |
|---|---|
| Subject | Re: Strange bug... |
| Date | |
| Msg-id | 03AF4E498C591348A42FC93DEA9661B88582@mail.vale-housing.co.uk Whole thread Raw |
| In response to | Strange bug... ("Donald Fraser" <demolish@cwgsy.net>) |
| List | pgadmin-support |
It's a bit bizarre I know, but it comes from some old code that had to figure out if an index is system generated. The rules are:
1) Unique = True AND Name = TableName_FirstColName_key (i.e. created as a unique constraint)
2) Primary = True (i.e. created as a primary key on a table).
2) Primary = True (i.e. created as a primary key on a table).
In the second example you sent, you missed the s_ prefix from the name, so rule 1 doesn't catch it as a system index. It's not a perfect soilution, but until PostgreSQL 7.3 came along, it was the best I could come up with. The changes to support 7.3 using a new better method are extensive, so I will only be implementing them in pgAdmin III.
Regards, Dave.
-----Original Message-----
From: Donald Fraser [mailto:demolish@cwgsy.net]
Sent: 21 January 2003 12:59
To: pgadmin-support@postgresql.org
Subject: Re: [pgadmin-support] Strange bug...Thanks for that Dave,I don't mind it not displaying the constraint as an index but the one thing I would ask for is consistency...For example if I create the following table via SQL:CREATE TABLE public.tbl_cmpycat (id int4 NOT NULL,s_desc text NOT NULL,id_editedby int4,dt_edited timestamp,CONSTRAINT tbl_cmpycat_desc_key UNIQUE (s_desc),CONSTRAINT tbl_cmpycat_pkey PRIMARY KEY (id)) WITHOUT OIDS;When I view it under pgAdminII it lists one index named tbl_cmpycat_desc_key...?This then leads on to another bug...When I try to drop the above table (not the index) pgAdminII attempts to drop the index first and then I get the following message as recorded in the log.21-01-2003 12:52:17 - SQL (Bugs): DROP INDEX public.tbl_cmpycat_desc_key
21-01-2003 12:52:17 - Error in pgAdmin II:basActions.Drop: -2147467259 - ERROR: Cannot drop index tbl_cmpycat_desc_key because constraint tbl_cmpycat_desc_key on table tbl_cmpycat requires it You may drop constraint tbl_cmpycat_desc_key on table tbl_cmpycat insteadRegardsDonald Fraser----- Original Message -----From: Dave PageSent: Tuesday, January 21, 2003 12:28 PMSubject: RE: [pgadmin-support] Strange bug...Hi Donald,This is a feature, not a bug :-)Seriously, pgAdmin figures out that the index is part of a constraint and classes it as a system object, therefore hiding it. If you switch on View System Objects on the View menu, you will see both indexes under the table. My guess is that pg_dump is not quite so clever and misses the UNIQUE constraint from the table definition, adding the index manually instead.Regards, Dave.-----Original Message-----
From: Donald Fraser [mailto:demolish@cwgsy.net]
Sent: 17 January 2003 20:05
To: pgadmin-support@postgresql.org
Subject: [pgadmin-support] Strange bug...OS W2K SP2pgAdmin II 1.4.12PostgreSQL 7.3 on i686-pc-linux-gnu, compiled by GCC 2.96Another strange bug...I create the following table using an SQL statement:CREATE TABLE "tbl_usertype" ("id" int4 NOT NULL,"s_desc" varchar(60) NOT NULL,CONSTRAINT "tbl_usertype_s_desc_key" UNIQUE ("s_desc"),CONSTRAINT "tbl_usertype_pkey" PRIMARY KEY ("id")) WITHOUT OIDS;GRANT SELECT ON "tbl_usertype" TO PUBLIC;pgAdmin then reports the following as the SQL statements:-- Table: public.tbl_usertypeCREATE TABLE public.tbl_usertype (id int4 NOT NULL,s_desc varchar(60) NOT NULL,CONSTRAINT tbl_usertype_s_desc_key UNIQUE (s_desc),CONSTRAINT tbl_usertype_pkey PRIMARY KEY (id)) WITHOUT OIDS;GRANT SELECT ON TABLE public.tbl_usertype TO PUBLIC;GRANT ALL ON TABLE public.tbl_usertype TO postgres;Now one would expect to see under pgAdmin one Index named "tbl_usertype_s_desc_key".pgAdmin reports zero Indexes....?Again I checked the output from pg_dumpall and it definitely exists.pg_dump displays the following lines.-- Name: tbl_usertype_s_desc_key; Type: INDEX; Schema: public; Owner: postgres
CREATE UNIQUE INDEX tbl_usertype_s_desc_key ON tbl_usertype USING btree (s_desc);RegardsDonald Fraser.
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