CREATE VIRTUAL TABLE x1 USING tcl(vtab_command);
CREATE TABLE y1(a, b);
CREATE TABLE y2(a, b);
SELECT * FROM x1
INSERT INTO y1 VALUES(1, 2) RETURNING rowid;
CREATE TRIGGER y1tr BEFORE INSERT ON y1 BEGIN
SELECT * FROM x1;
END;
INSERT INTO y1 VALUES(3, 4) RETURNING rowid;
INSERT INTO y1 VALUES(5, 6) RETURNING rowid;