CREATE TABLE tx(a, b, c, d, e, f, g, h, i, j, k, l, m, n, o PRIMARY KEY)
WITHOUT ROWID;
INSERT INTO tx VALUES(
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
);
SELECT o FROM tx NATURAL JOIN tx;
CREATE TABLE ty(a,Ñ,x6,x7,x8,Q,I,v,x1,L,E,x2,x3,x4,x5,s,g PRIMARY KEY,b,c)
WITHOUT ROWID;
SELECT a FROM ty NATURAL JOIN ty;