diff -r d59bea55db9b -r c445c931472f examples/sql/sudoku.sql
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/sql/sudoku.sql	Mon Dec 06 13:09:21 2010 +0100
@@ -0,0 +1,101 @@
+CREATE DATABASE glpk;
+CREATE USER glpk@localhost IDENTIFIED BY 'gnu';
+GRANT ALL PRIVILEGES ON glpk.* TO glpk@localhost;
+USE glpk;
+DROP TABLE sudoku;
+CREATE TABLE sudoku (
+  ID   INT ,
+  COL  INT ,
+  LIN  INT ,
+  VAL  INT ,
+  PRIMARY KEY ( ID, COL, LIN )
+  );
+DROP TABLE sudoku_solution;
+CREATE TABLE sudoku_solution (
+  ID   INT ,
+  COL  INT ,
+  LIN  INT ,
+  VAL  INT ,
+  PRIMARY KEY ( ID, COL, LIN )
+  );
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 1, 1, 5);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 1, 2, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 1, 3, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 1, 4, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 1, 5, 4);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 1, 6, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 1, 7, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 1, 8, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 1, 9, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 2, 1, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 2, 2, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 2, 3, 3);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 2, 4, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 2, 5, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 2, 6, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 2, 7, 6);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 2, 8, 2);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 2, 9, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 3, 1, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 3, 2, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 3, 3, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 3, 4, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 3, 5, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 3, 6, 9);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 3, 7, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 3, 8, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 3, 9, 4);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 4, 1, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 4, 2, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 4, 3, 6);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 4, 4, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 4, 5, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 4, 6, 7);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 4, 7, 2);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 4, 8, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 4, 9, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 5, 1, 8);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 5, 2, 1);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 5, 3, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 5, 4, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 5, 5, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 5, 6, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 5, 7, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 5, 8, 4);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 5, 9, 3);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 6, 1, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 6, 2, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 6, 3, 9);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 6, 4, 1);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 6, 5, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 6, 6, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 6, 7, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 6, 8, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 6, 9, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 7, 1, 7);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 7, 2, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 7, 3, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 7, 4, 5);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 7, 5, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 7, 6, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 7, 7, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 7, 8, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 7, 9, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 8, 1, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 8, 2, 9);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 8, 3, 2);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 8, 4, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 8, 5, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 8, 6, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 8, 7, 8);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 8, 8, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 8, 9, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 9, 1, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 9, 2, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 9, 3, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 9, 4, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 9, 5, 3);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 9, 6, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 9, 7, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 9, 8, 0);
+INSERT INTO sudoku (ID, COL, LIN, VAL) VALUES (1, 9, 9, 6);