Re: Getting list of Indexes & contrains

If you use -E option when doing issuing a "\di" command in psql it will
show you the query that it performs to list the indexes.

For example:

mmcintyre@beta matrix $ psql -E -U clients marc_dev
Welcome to psql 7.4.7, the PostgreSQL interactive terminal.

Type:  \copyright for distribution terms
       \h for help with SQL commands
       \? for help on internal slash commands
       \g or terminate with semicolon to execute query
       \q to quit

marc_dev=> \di
********* QUERY **********
SELECT n.nspname as "Schema",
  c.relname as "Name",
  CASE c.relkind WHEN 'r' THEN 'table' WHEN 'v' THEN 'view' WHEN 'i'
THEN 'index' WHEN 'S' THEN 'sequence' WHEN 's' THEN 'special' END as "Type",
  u.usename as "Owner",
 c2.relname as "Table"
FROM pg_catalog.pg_class c
     JOIN pg_catalog.pg_index i ON i.indexrelid = c.oid
     JOIN pg_catalog.pg_class c2 ON i.indrelid = c2.oid
     LEFT JOIN pg_catalog.pg_user u ON u.usesysid = c.relowner
     LEFT JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relkind IN ('i','')
      AND n.nspname NOT IN ('pg_catalog', 'pg_toast')
      AND pg_catalog.pg_table_is_visible(c.oid)
ORDER BY 1,2;
**************************
                                  List of relations
 Schema |              Name              | Type  |  Owner  |          Table
--------+--------------------------------+-------+---------+--------------------------
 public | sq_ast_attr_name               | index | clients | sq_ast_attr
 public | sq_ast_attr_pkey               | index | clients | sq_ast_attr
 public | sq_ast_attr_type_code          | index | clients | sq_ast_attr
 public | sq_ast_attr_type_code_key      | index | clients | sq_ast_attr
 public | sq_ast_attr_uniq_val_pkey      | index | clients |
sq_ast_attr_uniq_val
 public | sq_ast_attr_val_assetid        | index | clients | sq_ast_attr_val
 public | sq_ast_attr_val_attrid         | index | clients | sq_ast_attr_val
 public | sq_ast_attr_val_concat         | index | clients | sq_ast_attr_val
 public | sq_ast_attr_val_pkey           | index | clients | sq_ast_attr_val
 public | sq_ast_created                 | index | clients | sq_ast
 public | sq_ast_edit_access_pkey        | index | clients |
sq_ast_edit_access
:

You can then modify and use this query in your application.


Andrei Verovski (aka MacGuru) wrote:

>Hi,
>
>I am using PostgreSQL 8 and adodb. adodb has a built-in function which
>scans and retrieves db structure as assotiative array. Unfortunately,
>it do not list indexes and constrains. What would be a SQL statement
>to retrieve them?
>
>Thanks in advance for any suggestion(s).
>
>
>************************************************
>***   with best regards
>***   Andrei Verovski (aka MacGuru)
>***   Mac, Linux, DTP, Programming Web Site
>***
>***   http://snow.prohosting.com/guru4mac/
>************************************************
>
>---------------------------(end of broadcast)---------------------------
>TIP 6: explain analyze is your friend
>
>
>


--
Marc McIntyre
MySource Matrix Lead Developer

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