Get count of how many times a string appears in a MySQL column?

Let us first create a table −

mysql> create table DemoTable704 (SubjectName text);
Query OK, 0 rows affected (0.58 sec)

Insert some records in the table using insert command −

mysql> insert into DemoTable704 values('Introduction to MySQL');
Query OK, 1 row affected (0.15 sec)
mysql> insert into DemoTable704 values('Introduction to MongoDB');
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable704 values('Introduction to MySQL');
Query OK, 1 row affected (0.31 sec)
mysql> insert into DemoTable704 values('Introduction to Java');
Query OK, 1 row affected (0.39 sec)
mysql> insert into DemoTable704 values('Introduction to MongoDB');
Query OK, 1 row affected (0.14 sec)
mysql> insert into DemoTable704 values('Introduction to MySQL');
Query OK, 1 row affected (0.13 sec)
mysql> insert into DemoTable704 values('Introduction to C');
Query OK, 1 row affected (0.08 sec)
mysql> insert into DemoTable704 values('Introduction to Spring and Hibernate');
Query OK, 1 row affected (0.12 sec)

Display all records from the table using select statement −

mysql> select *from DemoTable704;

This will produce the following output -

+--------------------------------------+
| SubjectName                          |
+--------------------------------------+
| Introduction to MySQL                |
| Introduction to MongoDB              |
| Introduction to MySQL                |
| Introduction to Java                 |
| Introduction to MongoDB              |
| Introduction to MySQL                |
| Introduction to C                    |
| Introduction to Spring and Hibernate |
+--------------------------------------+
8 rows in set (0.00 sec)

Following is the query to get count of how many times string appears in column −

mysql> SELECT COUNT(*) from DemoTable704 WHERE SubjectName LIKE '%Introduction to MySQL%';

This will produce the following output -

+----------+
| COUNT(*) |
+----------+
| 3        |
+----------+
1 row in set (0.00 sec)

AmitDiwan

Published on 21-Aug-2019 12:04:15

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