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.

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Answer 1

You've basically named the solution in your question.

To get a list of tables (and views), query sqlite_master as in

SELECT name, sql FROM sqlite_master
WHERE type='table'
ORDER BY name;

(see the SQLite FAQ)

To get information about the columns in a specific table, use PRAGMA table_info(table-name); as explained in the SQLite PRAGMA documentation.

I don't know of any way to get tablename|columnname returned as the result of a single query. I don't believe SQLite supports this. Your best bet is probably to use the two methods together to return the information you're looking for - first get the list of tables using sqlite_master, then loop through them to get their columns using PRAGMA table_info().