-- -- btree index -- test retrieval of min/max keys for each -- SELECT b.* FROM bt_i4_heap b WHERE b.seqno < 1; SELECT b.* FROM bt_i4_heap b WHERE b.seqno >= 9999; SELECT b.* FROM bt_i4_heap b WHERE b.seqno = 4500; SELECT b.* FROM bt_c16_heap b WHERE b.seqno < '1'::char16; SELECT b.* FROM bt_c16_heap b WHERE b.seqno >= '9999'::char16; SELECT b.* FROM bt_c16_heap b WHERE b.seqno = '4500'::char16; SELECT b.* FROM bt_txt_heap b WHERE b.seqno < '1'::text; SELECT b.* FROM bt_txt_heap b WHERE b.seqno >= '9999'::text; SELECT b.* FROM bt_txt_heap b WHERE b.seqno = '4500'::text; SELECT b.* FROM bt_f8_heap b WHERE b.seqno < '1'::float8; SELECT b.* FROM bt_f8_heap b WHERE b.seqno >= '9999'::float8; SELECT b.* FROM bt_f8_heap b WHERE b.seqno = '4500'::float8;