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MySQL CAST() Function The CAST() function converts a value (of any type) into the specified datatype.
Another function to convert implicitly when we concatenate values is the CONCAT function. This example shows how to concatenate string values with int values. The CONCAT implicitly converts values into strings. If you need to concatenate different data types, CONCAT is the best option instead of using the + character.
The MySQL CAST() function is used for converting a value from one datatype to another specific datatype. The CAST() function accepts two parameters which are the value to be converted and the datatype to which the value needs to be converted.
The CAST() function in MySQL is used to convert a value from one data type to another data type specified in the expression. It is mostly used with WHERE, HAVING, and JOIN clauses. This function is similar to the CONVERT() function in MySQL. It converts the value into DATE datatype in the "YYYY-MM-DD" format.
If you have a column called "col1" which is int, you cast it to String like this:
CONVERT(col1,char)
e.g. this allows you to check an int value is containing another value (here 9) like this:
CONVERT(col1,char) LIKE '%9%'
You could use CONCAT, and the numeric argument of it is converted to its equivalent binary string form.
select t2.*
from t1 join t2
on t2.url=CONCAT('site.com/path/%', t1.id, '%/more') where t1.id > 9000
select t2.*
from t1 join t2 on t2.url='site.com/path/%' + cast(t1.id as varchar) + '%/more'
where t1.id > 9000
Using concat like suggested is even better though
Try it using CONCAT
CONCAT('site.com/path/','%', CAST(t1.id AS CHAR(25)), '%','/more')
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