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Display substrings of different length with a single MySQL query and combine the result
Let us first create a table −
mysql> create table DemoTable856(Title text); Query OK, 0 rows affected (0.89 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable856 values('Introduction to MySQL');
Query OK, 1 row affected (0.17 sec)
mysql> insert into DemoTable856 values('Java in depth');
Query OK, 1 row affected (0.16 sec)
mysql> insert into DemoTable856 values('C++ with Data Structure');
Query OK, 1 row affected (0.17 sec)Display all records from the table using select statement −
mysql> select *from DemoTable856;
This will produce the following output −
+-------------------------+ | Title | +-------------------------+ | Introduction to MySQL | | Java in depth | | C++ with Data Structure | +-------------------------+ 3 rows in set (0.00 sec)
Following is the query to display the substrings of different length and combine the result using UNION ALL −
mysql> select substr(Title,1,12) from DemoTable856 UNION ALL select substr(Title,1,4) from DemoTable856;
This will produce the following output −
+--------------------+ | substr(Title,1,12) | +--------------------+ | Introduction | | Java in dept | | C++ with Dat | | Intr | | Java | | C++ | +--------------------+ 6 rows in set (0.03 sec)
Updated on: 03-Sep-2019
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