这里用一个实例来演示PostgreSQL存储过程如何返回数据集。1 首先准备数据表//member_categorycreate table member_category(id serial, name text, discount_rate real, base_integral integer...
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数据库 时间:
2015-01-22 11:01:20
阅读次数:
183
这里用一个实例来演示PostgreSQL存储过程如何返回数据集.
1 首先准备数据表
//member_category
create table member_category(id serial, name text, discount_rate real, base_integral integer);
alter table member_category add primary ke...
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数据库 时间:
2015-01-16 19:17:15
阅读次数:
242
Initializers:
1.被初始化的变量在create那一瞬间得到值:double price = 109.99, discount = price * 0.6; 这样的定义是合理的。
Three ways of initialization:
1. int units = 0;
2. int units = {0};
3. int units{0};
4. int...
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编程语言 时间:
2015-01-01 11:19:59
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208
Description
Lindsay is a shopaholic. Whenever there is a discount of the kind where you can buy three items and only pay for two, she goes completely mad and feels a need to buy all items in the st...
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其他好文 时间:
2014-12-09 21:31:27
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166
1438. ShopaholicConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionLindsay is a shopaholic. Whenever there is a discount of the kind where y...
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其他好文 时间:
2014-12-01 00:51:01
阅读次数:
173
问题场景在写样式时经常需要用到非ASCII字符的属性值,如下:?1234567891011.hot_list .sign_discount:before { content: "满减"; padding: 0 8px; margin-right: 7px; font-size: 12px; line...
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Web程序 时间:
2014-11-14 12:25:08
阅读次数:
203
作者:zhanhailiang 日期:2014-10-30
问题场景
在写样式时经常需要用到非ASCII字符的属性值,如下:
.hot_list .sign_discount:before {
content: "满减";
padding: 0 8px;
margin-right: 7px;
font-size: 12px;
line-...
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Web程序 时间:
2014-10-30 20:58:37
阅读次数:
201
ConstraintsTime Limit: 1 secs, Memory Limit: 32 MBDescriptionLindsay is a shopaholic. Whenever there is a discount of the kind where you can buy three...
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其他好文 时间:
2014-10-11 22:47:36
阅读次数:
191
--Q3;1.1执行计划EXPLAINEXTENDEDSELECTL_ORDERKEY,SUM(L_EXTENDEDPRICE*(1-L_DISCOUNT))ASREVENUE,O_ORDERDATE,O_SHIPPRIORITYFROMCUSTOMER,ORDERS,LINEITEMWHEREC_MKTSEGMENT=‘BUILDING‘ANDC_CUSTKEY=O_CUSTKEYANDL_ORDERKEY=O_ORDERKEYANDO_ORDERDATE<DATE‘1995-03-15‘AN..
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数据库 时间:
2014-09-28 18:38:46
阅读次数:
352