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PostgreSQL STRING CONCATE

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Contents

Postgresql ||

Concatenate string together.

Syntax ||

  • string1 is a string or any character symbol
  • string2 is a string or any character symbol
  • string3 is a string or any character symbol
  • something (optional) is a display column alias
string1 || string2 || string3 something

Example 1

test2=# SELECT 'girl'||' ' || 'boy' as kids;
   kids   
----------
 girl boy
(1 row)

Example 2

test2=# SELECT * FROM profile;
 user_id | user_firstname | user_lastname | user_age 
---------+----------------+---------------+----------
       2 | Jim            | Jkim          |       32
       3 | king           | queen         |       29
       4 | Jammi          | weeks         |       23
       1 | Bob            | Mark          |       45
(5 rows)

test2=# SELECT user_id,
test2-# user_firstname || ' ' || user_lastname as fullname,
test2-# user_age 
test2-# FROM profile;
 user_id |  fullname   | user_age 
---------+-------------+----------
       2 | Jim Jkim    |       32
       3 | king queen  |       29
       4 | Jammi weeks |       23
       1 | Bob Mark    |       45

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