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Update a table in MySQL and display only the initials name in a new column
To get the initial, use the concept of left() along with substring_index().
Let us create a table −
mysql> create table demo13 −> ( −> full_name varchar(100), −> short_name varchar(20) −> ); Query OK, 0 rows affected (1.18 sec)
Insert some records into the table with the help of insert command −
mysql> insert into demo13(full_name) values('John Smith'); Query OK, 1 row affected (0.27 sec) mysql> insert into demo13(full_name) values('David Miller'); Query OK, 1 row affected (0.13 sec) mysql> insert into demo13(full_name) values('Chris Brown'); Query OK, 1 row affected (0.28 sec)
Display records from the table using select statement −
mysql> select *from demo13;
This will produce the following output −
+--------------+------------+ | full_name | short_name | +--------------+------------+ | John Smith | NULL | | David Miller | NULL | | Chris Brown | NULL | +--------------+------------+ 3 rows in set (0.00 sec)
Following is the query to update table and get the initials name −
mysql> update demo13 −> set short_name= concat( −> left(full_name, 1), −> left(substring_index(full_name, ' ', −1), 1) −> ); Query OK, 3 rows affected (0.14 sec) Rows matched: 3 Changed: 3 Warnings: 0
Display records from the table using select statement −
mysql> select *from demo13;
This will produce the following output −
+--------------+------------+ | full_name | short_name | +--------------+------------+ | John Smith | JS | | David Miller | DM | | Chris Brown | CB | +--------------+------------+ 3 rows in set (0.00 sec)
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