SQLite Schema Information Metadata

Question

I need to get column names and their tables in a SQLite database. What I need is a resultset with 2 columns: table_name | column_name.

In MySQL, I\'m a

Answer 1

Recent versions of SQLite allow you to select against PRAGMA results now, which makes this easy:

SELECT 
  m.name as table_name, 
  p.name as column_name
FROM 
  sqlite_master AS m
JOIN 
  pragma_table_info(m.name) AS p
ORDER BY 
  m.name, 
  p.cid

where p.cid holds the column order of the CREATE TABLE statement, zero-indexed.

David Garoutte answered this here, but this SQL should execute faster, and columns are ordered by the schema, not alphabetically.

Note that table_info also contains

• type (the datatype, like integer or text),
• notnull (1 if the column has a NOT NULL constraint)
• dflt_value (NULL if no default value)
• pk (1 if the column is the table's primary key, else 0)

RTFM: https://www.sqlite.org/pragma.html#pragma_table_info