How to query table data in SQLite?
To retrieve table data in an SQLite database, you can use the SELECT statement. Here is the basic syntax of the SELECT statement:
SELECT 列名1, 列名2, ... FROM 表名;
You can use the following methods to query table data:
- Retrieve data for all columns.
SELECT * FROM 表名;
- Retrieve data from specified columns.
SELECT 列名1, 列名2, ... FROM 表名;
- Retrieve the data that meets the criteria:
SELECT * FROM 表名 WHERE 条件;
For example, querying for students in the “students” table who are age 18 and older:
SELECT * FROM students WHERE age >= 18;
- Sort the search results.
SELECT * FROM 表名 ORDER BY 列名 [ASC|DESC];
For example, querying in ascending order by students’ age.
SELECT * FROM students ORDER BY age ASC;
- Limiting the search results:
SELECT * FROM 表名 LIMIT 数量;
For example, retrieve the first 10 records from the table “students”.
SELECT * FROM students LIMIT 10;
The above are some commonly used search methods, you can search based on your specific needs.