How to Use SQL MID

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

SELECT MID(col_name,start,length) AS se_name FROM tbl_name;

The SUBSTRING() function in SQL Server:

SELECT SUBSTRING(column_name,start,length) AS some_name FROM table_name;

The SUBSTR() function in Oracle:

SELECT SUBSTR(column_name,start,length) AS some_name FROM table_name;

Theory is great, but we recommend digging deeper!

An Interactive SQL Tutorial for Beginners: Introduction to SQL

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Demo Database

The table called" Customers":

SQL MID: Example

In the ode example below picks out the primary four data records from the column "City" in the table "Customers":

SELECT MID(City,1,4) AS ShortCity FROM Customers;

SQLite Syntax: Example

SELECT SUBSTR(City,1,4) AS ShortCity from Customers;