Contents
SQL MID Function: Main Tips
- This function is needed to take out characters from a data record field.
- There are function equivalents for other database-systems.
Syntax of SQL MID
Example
SELECT MID(col_name,start,length) AS se_name FROM tbl_name;
Parameters | Descriptions |
---|---|
col_name | Needed. The data record to take out characters. |
start | Needed. Defines the start position. |
length | May use. The amount of characters to bring. |
The SUBSTRING() function in SQL Server:
Example
SELECT SUBSTRING(column_name,start,length) AS some_name FROM table_name;
The SUBSTR() function in Oracle:
Example
SELECT SUBSTR(column_name,start,length) AS some_name FROM table_name;

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Demo Database
The table called" Customers":
ID | Name | Name | City |
---|---|---|---|
1 | Ben Choplinks | Ben Choplink | London |
2 | Donald Rich | Donald Richario | Talinn |
3 | Lilly Smilkins | Lilly Smilkin | Frankfurt |
4 | Brandinina | Tom Hitchins | Dublin |
5 | Carizmos | Christiano Kerrys | Paris |
SQL MID: Example
In the ode example below picks out the primary four data records from the column "City" in the table "Customers":
Example
SELECT MID(City,1,4) AS ShortCity FROM Customers;
SQLite Syntax: Example
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