统计两行给定记录之间的数据
-- PostgreSQL V9.04create table managecard ( id serial, managecard char(18) not null);insert into managecard(managecard) values ('207999900100000020');insert into managecard(managecard) values ('207999900100000021');insert into managecard(managecard) values ('207999900100000022');create table trans ( id serial, card char(18) not NULl, transtype char(10) not null, transtime char(6));insert into trans (card, transtype, transtime ) values ('207999900100000026', '消费', '050000');insert into trans (card, transtype, transtime ) values ('207999900100000020', '消费', '050100');insert into trans (card, transtype, transtime ) values ('207999900100000023', '存款', '050200');insert into trans (card, transtype, transtime ) values ('207999900100000024', '积分消费', '050300');insert into trans (card, transtype, transtime ) values ('207999900100000022', '启用', '050400');insert into trans (card, transtype, transtime ) values ('207999900100000026', '消费', '050500');insert into trans (card, transtype, transtime ) values ('207999900100000023', '积分消费', '050600');insert into trans (card, transtype, transtime ) values ('207999900100000021', '消费', '050700');insert into trans (card, transtype, transtime ) values ('207999900100000020', '积分消费', '050800');insert into trans (card, transtype, transtime ) values ('207999900100000021', '消费', '050900');insert into trans (card, transtype, transtime ) values ('207999900100000023', '启用', '051000');/* 过程： 从trans表第一条记录a开始，如果a的卡号在managecard表中存在，则此条数据其后 的各条数据的卡号都记录在a的卡号旗下，直到遇到下一条卡号在managecard中存在的记录b ｂ记录其后的各条数据的卡号都记录在b的卡号旗下，直到遇到下一条卡号在managecard中存在的数据记录c...， 如此往复。 根据以上数据及需求得出的结果应该是: managecard card transtype transtime ------------------------------- 207999900100000020 207999900100000023 存款 050200 207999900100000020 207999900100000024 积分消费 050300 207999900100000022 207999900100000026 消费 050500 207999900100000022 207999900100000023 积分消费 050600 207999900100000021 207999900100000023 启用 051000*/