How Can I Get Detailed Table Information in SQLite Beyond `PRAGMA table_info`?

Retrieving Detailed Table Information in SQLite

While SQLite offers the PRAGMA table_info command for retrieving basic table details, it may not provide all the information you need. To obtain a more comprehensive overview of your tables, similar to MySQL's DESCRIBE command, SQLite offers an alternative option.

Alternative Approach: .schema Command

The SQLite command line utility provides the .schema TABLENAME command, which generates the create statements for the specified table. This command displays the complete definition of the table, including:

• Column names
• Data types
• Constraints (such as primary keys and foreign keys)
• Field types (whether a column is a foreign key or index)

Usage

To use the .schema command, access the SQLite command line interface and follow these steps:

1. Open the command line interface.
2. Type .schema TABLENAME and press Enter, where TABLENAME is the name of the table you want to inspect.

Example

For example, let's examine the student table in the school database:

.schema student

This command will display the following output:

CREATE TABLE student (
  id INTEGER PRIMARY KEY,
  name TEXT NOT NULL,
  age INTEGER NOT NULL,
  gender TEXT,
  FOREIGN KEY (gender) REFERENCES gender(id)
);

As you can see, the .schema command provides a more detailed view of the table structure, including the primary key, data types, and foreign key relationship.

The above is the detailed content of How Can I Get Detailed Table Information in SQLite Beyond `PRAGMA table_info`?. For more information, please follow other related articles on the PHP Chinese website!