账户表余额表消费储蓄表

概述  Netkiller PostgreSQL 手札   Mr. Neo Chan, 陈景峰(BG7NYT) 中国广东省深圳市龙华新区民治街道溪山美地 518131 +86 13113668890 +86 755 29812080 <netkiller@msn.com> 文档始创于2012-11-16 版权 © 2010, 2011, 2012, 2013 Netkiller(Neo Chan). Netkiller Postgresql 手札 Mr.NeoChan,陈景峰(BG7NYT)

中国广东省深圳市龙华新区民治街道溪山美地
518131
+8613113668890
+8675529812080
<netkiller@msn.com>

文档始创于2012-11-16

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$Date: 2013-04-10 15:03:49 +0800 (Wed,10 Apr 2013) $

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5.3.账户表/余额表/消费储蓄表

此表适用于购物车等金钱来往账面等等。

		-- table: account-- DROP table account;CREATE table account(  ID integer NOT NulL DEFAulT nextval('Trade_ID_seq'::regclass),no character varying(10) NOT NulL,-- 账号  balance money NOT NulL DEFAulT 0.00,-- 余额  datetime timestamp without time zone NOT NulL DEFAulT (Now())::timestamp(0) without time zone,CONSTRAINT account_pkey PRIMARY KEY (ID))WITH (  OIDS=FALSE);ALTER table account  OWNER TO dba;COMMENT ON ColUMN account.no IS '账号';COMMENT ON ColUMN account.balance IS '余额';-- Index: account_no_IDx-- DROP INDEX account_no_IDx;CREATE INDEX account_no_IDx  ON account  USING btree  (no ColLATE pg_catalog."default");						

账户结余计算

		select acc.*,(select sum(balance)+acc.balance from account as ac where ac.ID < acc.ID) as profit from account as acc;test=# select acc.*,(select sum(balance)+acc.balance from account as ac where ac.ID < acc.ID) as profit from account as acc; ID |  no  | balance  |      datetime       | profit----+------+----------+---------------------+---------  1 | 1000 |    .00 | 2013-10-09 10:51:10 |  2 | 1000 |   .60 | 2013-10-09 10:51:22 |  .60  4 | 1000 |   .80 | 2013-10-09 10:51:42 |  .40  5 | 1000 |  0.00 | 2013-10-09 10:51:49 | 9.40  6 | 1000 |  0.00 | 2013-10-09 10:56:35 | 9.40  7 | 1000 |   .45 | 2013-10-09 10:57:23 | 9.85  8 | 1000 |   .50 | 2013-10-09 10:57:31 | 5.35  9 | 1000 |  -.30 | 2013-10-09 10:59:28 | 0.05 10 | 1000 | -0.00 | 2013-10-09 10:59:44 | 0.05(9 rows)				

总结

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