Tag: psql

Waiting for 8.5 – better wrapped output in psql

On 22nd of November Tom Lane committed patch by Roger Leigh which fixes my pet peeve:

Log Message:
-----------
Improve psql's tabular display of wrapped-around data by inserting markers
in the formerly-always-blank columns just to left and right of the data.
Different marking is used for a line break caused by a newline in the data
than for a straight wraparound.  A newline break is signaled by a "+" in the
right margin column in ASCII mode, or a carriage return arrow in UNICODE mode.
Wraparound is signaled by a dot in the right margin as well as the following
left margin in ASCII mode, or an ellipsis symbol in the same places in UNICODE
mode.  "\pset linestyle old-ascii" is added to make the previous behavior
available if anyone really wants it.
 
In passing, this commit also cleans up a few regression test files that
had unintended spacing differences from the current actual output.
 
Roger Leigh, reviewed by Gabrielle Roth and other members of PDXPUG.

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Waiting for 8.5 – Have \d show child tables that inherit from the specified parent

Yesterday Peter Eisentraut committed a patch, written by Damien Clochard, that modifies \d output in psql:

Have \d show child tables that inherit from the specified parent
 
As per discussion, \d shows only the number of child tables, because that
could be hundreds, when used for partitioning.  \d+ shows the actual list.
 
Author: Damien Clochard <damien@dalibo.info>

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Tips N’ Tricks – Generating readable reports with plain SQL

Let's say you imported some data, but it contains duplicates. You will have to handle them in some way, but to make sensible choice on how to handle it, you need more information.

So, let's start. We have table:

# \d users
                                    Table "public.users"
   Column   |           Type           |                     Modifiers
------------+--------------------------+----------------------------------------------------
 id         | integer                  | not null default nextval('users_id_seq'::regclass)
 username   | text                     |
 registered | timestamp with time zone |
Indexes:
    "users_pkey" PRIMARY KEY, btree (id)

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Suppressing CONTEXT lines in psql

CONTEXT messages are quite informative, but when you don't need them, they can be real pain in the eyes:

psql:trees.sql:68: NOTICE:  Adding tree structures to table public.testit.
CONTEXT:  SQL function "add_tree_structure" statement 1
psql:trees.sql:68: NOTICE:  Tree table will be public.testit_tree.
CONTEXT:  SQL function "add_tree_structure" statement 1
psql:trees.sql:68: NOTICE:  Primary key in source table is: id
CONTEXT:  SQL function "add_tree_structure" statement 1

I mean – I know the context. I'm writing the sql file right now, how to disable it?

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