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MySQL query to change a string by displaying only the part of string after underscore?
Let us first create a table −
mysql> create table DemoTable ( UserName varchar(100) ); Query OK, 0 rows affected (0.69 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('Smith_John');
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable values('Smith_Adam');
Query OK, 1 row affected (0.10 sec)
mysql> insert into DemoTable values('Smith_David');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable values('Smith_Mike');
Query OK, 1 row affected (0.12 sec)Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-------------+ | UserName | +-------------+ | Smith_John | | Smith_Adam | | Smith_David | | Smith_Mike | +-------------+ 4 rows in set (0.00 sec)
Following is the query to display only the part of the string after underscore −
mysql> update DemoTable set UserName=substring(UserName,7) where UserName LIKE 'Smith_%'; Query OK, 4 rows affected (0.12 sec) Rows matched: 4 Changed: 4 Warnings: 0
Let us check the table records once again −
mysql> select *from DemoTable;
This will produce the following output −
+----------+ | UserName | +----------+ | John | | Adam | | David | | Mike | +----------+ 4 rows in set (0.00 sec)
Updated on: 27-Sep-2019
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