SQLite3

class sqlite3db

A SQLite3 database connection.

Database connections are created using eg-overlay.sqlite3open().

prepare(sql)

Prepare the given sql statement. An error will be raised if an error occurs during prepartion, otherwise this method returns a new sqlite3stmt.

Note

If the supplied sql statement can not be prepared, an error is logged and nil is returned instead.

Parameters:

sql (string)

Return type:

sqlite3stmt

Version History

Version	Notes
0.3.0	Added

execute(sql)

A convenience function that prepares, steps, and finalizes a statement for the given sql.

If the statement returns data it will be returned as a Lua table. If no data is returned but the statement is executed successfully, true is returned. If any error occurs, it will be logged and nothing (nil) is returned.

Version History

Version	Notes
0.3.0	Added

class sqlite3stmt

bind(key, value[, blob])

Set a statement parameter to given value.

key can be either an integer or a string and must match the parameters specified when this statement was prepared.

See SQLite parameters.

Important

Number parameters begin at 1.

Parameters:

• key

• value

• blob (boolean) – (Optional) Bind the parameter as a BLOB instead of autodetecting the type.

Version History

Version	Notes
0.3.0	Added

step()

Begin or continue execution of this statement.

If the statement returns data, typically a single result row, it will be returned as a Lua table. If the statement successfully completes but no data is returned, true is returned. If an error occurs, it will be logged and nothing (nil) is returned.

Version History

Version	Notes
0.3.0	Added

reset()

Resets this statement to an initial state, allowing it to be executed again.

Warning

Values bound with bind() are not cleared by this method.

Return type:

string

Version History

Version	Notes
0.3.0	Added