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Parse a string to get a number from a large string separated by underscore
Let us first create a table −
mysql> create table DemoTable1961 ( Title text ); Query OK, 0 rows affected (0.00 sec)
Insert some records in the table using insert command −
mysql> insert into DemoTable1961 values('You_can_remove_the_string_part_only-10001-But_You_can_not_remove_the_numeric_parts');
Query OK, 1 row affected (0.00 sec)Display all records from the table using select statement −
mysql> select * from DemoTable1961;
This will produce the following output −
+------------------------------------------------------------------------------------+ | Title | +------------------------------------------------------------------------------------+ | You_can_remove_the_string_part_only-10001-But_You_can_not_remove_the_numeric_parts | +------------------------------------------------------------------------------------+ 1 row in set (0.00 sec)
Here is the query to implement CAST() and parse a string to get number from a string −
mysql> select cast(replace(replace('You_can_remove_the_string_part_only-10001-But_You_can_not_remove_the_numeric_parts','You_can_remove_the_string_part_only-',''),
'-But_You_can_not_remove_the_numeric_parts','') as unsigned) as Output from DemoTable1961;This will produce the following output −
+--------+ | Output | +--------+ | 10001 | +--------+ 1 row in set (0.00 sec)
Updated on: 31-Dec-2019
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