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How to count number of specific symbols in a row in MySQL?
You can use LENGTH() to count number of specific symbols in a row. Let us first create a table −
mysql> create table DemoTable ( Value varchar(200) ); Query OK, 0 rows affected (0.54 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable values('?1234?6789?5656?324?');
Query OK, 1 row affected (0.17 sec)Following is the query to display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+----------------------+ | Value | +----------------------+ | ?1234?6789?5656?324? | +----------------------+ 1 row in set (0.00 sec)
Following is the query to count number of specific symbols in a row in MySQL −
mysql> SELECT LENGTH(Value) - LENGTH(REPLACE(Value,'?','')) from DemoTable;
This will produce the following output −
+-----------------------------------------------+ | LENGTH(Value) - LENGTH(REPLACE(Value,'?','')) | +-----------------------------------------------+ | 5 | +-----------------------------------------------+ 1 row in set (0.03 sec)
Updated on: 30-Jul-2019
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