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MySQL query to get count of each fileid entry in a table with Id and FileIDs?
Let us first create a table −
mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, FileID int ) AUTO_INCREMENT=100; Query OK, 0 rows affected (1.36 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable(FileID) values(50); Query OK, 1 row affected (0.17 sec) mysql> insert into DemoTable(FileID) values(60); Query OK, 1 row affected (0.14 sec) mysql> insert into DemoTable(FileID) values(50); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(FileID) values(70); Query OK, 1 row affected (0.25 sec) mysql> insert into DemoTable(FileID) values(60); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable(FileID) values(50); Query OK, 1 row affected (0.32 sec)
Display all records from the table using select statement −
mysql> select *from DemoTable;
This will produce the following output −
+-----+---------+ | Id | FileID | +-----+---------+ | 100 | 50 | | 101 | 60 | | 102 | 50 | | 103 | 70 | | 104 | 60 | | 105 | 50 | +-----+---------+ 6 rows in set (0.00 sec)
Following is the query to get a count of each FileID entry in a table −
mysql> select FileID,COUNT(FieldId) AS EntryCount from DemoTable group by FileID;
This will produce the following output −
+---------+------------+ | FileID | EntryCount | +---------+------------+ | 50 | 3 | | 60 | 2 | | 70 | 1 | +---------+------------+ 3 rows in set (0.00 sec)
Updated on: 03-Oct-2019
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