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MySQL Instr String

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How to write instr in MySQL with example?. The MySQL Instr string is one of the String Function, which returns the position of the first occurrence of a specified substring from a given string.

MySQL Instr String Syntax

The basic syntax of the Instr in MySQL is as shown below.

SELECT INSRT (String, Sub_String) FROM Source
  • String: A valid string or expression in which you want to look.
  • Sub_String: String that you are looking for.

The Instr function in MySQL returns the index position of the first occurrence of a Sub_String in a String. If then Sub_String is not found, it returns 0 as output.

MySQL Instr String Example 1

The following query shows multiple ways to use this string Instr function using different string values.

SELECT INSTR('TutorialGateway', 'a') AS Instr1;

SELECT INSTR('MySQL Tutorial at Tutorial Gateway', 'Tutorial') AS Instr2;

SELECT INSTR('We are abc working at abc company', 'abc') AS Instr3;

SELECT INSTR('We are abc working at abc company', 'MySQL') AS Instr4;

OUTPUT

MySQL Instr String 1

ANALYSIS

Within this string function example, the below statement, we used Instr to find the index position of the first occurrence of a

SELECT INSTR('TutorialGateway', 'a') AS Instr1;

In the last statement, we are looking for a substring that does not exist.

SELECT INSTR('We are abc working at abc company', 'MySQL') AS Instr4;

Instr String Example 2

The MySQL String Instr function also allows you to write the index position from column values too. To demonstrate this, We are going to use the below-shown data.

MySQL Instr String 2

In this example, we are going to use this string Instr function to find the index position of High word in the Education column.

-- MySQL String Instr Function Example
USE `mysql tutorial`;
SELECT  EmpID,
		FirstName,
        LastName,
        Education,
        INSTR(Education, 'High') AS InsrtFunction,
        Occupation,
		YearlyIncome,
        Sales
FROM employee;

OUTPUT

MySQL Instr String 3