Tutorials References Exercises Videos Menu
Create Website Get Certified Upgrade

SQL Tutorial

SQL HOME SQL Intro SQL Syntax SQL Select SQL Select Distinct SQL Where SQL And, Or, Not SQL Order By SQL Insert Into SQL Null Values SQL Update SQL Delete SQL Select Top SQL Min and Max SQL Count, Avg, Sum SQL Like SQL Wildcards SQL In SQL Between SQL Aliases SQL Joins SQL Inner Join SQL Left Join SQL Right Join SQL Full Join SQL Self Join SQL Union SQL Group By SQL Having SQL Exists SQL Any, All SQL Select Into SQL Insert Into Select SQL Case SQL Null Functions SQL Stored Procedures SQL Comments SQL Operators

SQL Database

SQL Create DB SQL Drop DB SQL Backup DB SQL Create Table SQL Drop Table SQL Alter Table SQL Constraints SQL Not Null SQL Unique SQL Primary Key SQL Foreign Key SQL Check SQL Default SQL Index SQL Auto Increment SQL Dates SQL Views SQL Injection SQL Hosting SQL Data Types

SQL References

SQL Keywords MySQL Functions SQL Server Functions MS Access Functions SQL Quick Ref

SQL Examples

SQL Examples SQL Quiz SQL Exercises SQL Certificate

MySQL INSTR() Function

Example

Search for "3" in string "W3Schools.com", and return position:

SELECT INSTR("W3Schools.com", "3") AS MatchPosition;
Try it Yourself »

Definition and Usage

The INSTR() function returns the position of the first occurrence of a string in another string.

This function performs a case-insensitive search.

Syntax

INSTR(string1, string2)

Parameter Values

Parameter Description
string1 Required. The string that will be searched
string2 Required. The string to search for in string1. If string2 is not found, this function returns 0

Technical Details

Works in: From MySQL 4.0

More Examples

Example

Search for "COM" in string "W3Schools.com", and return position:

SELECT INSTR("W3Schools.com", "COM") AS MatchPosition;
Try it Yourself »

Example

Search for "a" in CustomerName column, and return position:

SELECT INSTR(CustomerName, "a")
FROM Customers;
Try it Yourself »