📅  最后修改于: 2023-12-03 15:17:46.087000             🧑  作者: Mango
MySQL Parse Int is a built-in function that is used to convert a string into an integer. This function is commonly used in SQL queries that involve numerical data types. In this article, we will explore how MySQL Parse Int works, how to use it in SQL queries, and common use cases.
The syntax for MySQL Parse Int is as follows:
PARSE_INT(str[,base])
Where str
is the string that needs to be converted into an integer and base
is the base value for the conversion. Base is an optional parameter that defaults to 10.
Here's an example of how to use the MySQL Parse Int function:
SELECT PARSE_INT('1234',10);
The query above will return the integer value of 1234.
MySQL Parse Int is often used in SQL queries that involve numerical data types. For example, it can be used to convert character data into integer values when performing calculations, and it is often used in WHERE clauses to compare numeric values.
SELECT * FROM orders WHERE PARSE_INT(total,10) > 100;
The query above will return all orders where the total value is greater than 100.
MySQL Parse Int is a useful function for converting strings into integers in SQL queries. It is simple to use and can be used for a variety of common use cases. Keep in mind that the base parameter is optional and defaults to 10, so make sure to specify the correct base value if you need to convert from a different number system.