CREATE TABLE b (begt datetime, kid int4);
CREATE TABLE a (kid int4);
CREATE TABLE c (a int4, b varchar(30), c int4);
CREATE  INDEX b_0 on b using btree ( begt datetime_ops );
CREATE  INDEX b_1 on b using btree ( kid int4_ops );
CREATE  INDEX a_0 on a using btree ( kid int4_ops );