How to find the number of records that satisfy a condition in SQLite?
To retrieve the number of records that meet the conditions, you can use the COUNT function in SQLite. Below is the query method:
SELECT COUNT(*) FROM 表名 WHERE 条件;
`COUNT(*)` is used to calculate the total number of records that meet the conditions.
– `Table name` is the name of the table that needs to be queried.
`WHERE` is optional and is used to specify the query conditions.
For example, consider a table named `employees` that contains employee information. To query the number of records that meet a certain condition (such as being over 30 years old), you can use the following query statement:
SELECT COUNT(*) FROM employees WHERE age > 30;
Please replace the table name and condition section with your actual circumstances.