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sql分组获取第一条记录(sql+oracle)
sql版本select * from (select t.CloseDate,t.ExpiryDate,t.DataTypeLookupID,ROW_NUMBER() over(partition by CloseDate,ExpiryDate,DataTypeLookupID order by C...
分类:数据库   时间:2015-07-03 01:35:37    阅读次数:159
Javascript数据类型强制转换
一、转换为数值类型1、Number(参数)把任何的类型转换为数值类型A.如果是布尔值,false为0,true为1B.如果是数字,转换成为本身。将无意义的后导0去掉。C.如果Null转换为0D.如果是undefined转换为NaNnotanumberE.如果对象则会先调用对象的valueOf(),如果valueOf()返回的是NaN,然..
分类:编程语言   时间:2015-07-03 00:25:09    阅读次数:173
javascript数据类型隐式转换
一、函数类isNaN()该函数会对参数进行隐式的Number()转换,如果转换不成功则返回true;alert()输出的内容隐式的转换为字符串二、运算符类1.算数运算符-*/%如果操作数不是数值,将会隐式的调用Number()函数,按照这个函数的转换规则进行转换,如果转换不成功,整个表达式返回NaN+..
分类:编程语言   时间:2015-07-03 00:24:58    阅读次数:172
[LeetCode] Edit Distance
This is a classic problem of Dynamic Programming. We define the statedp[i][j]to be the minimum number of operations to convertword1[0..i - 1]toword2[0...
分类:其他好文   时间:2015-07-03 00:03:33    阅读次数:104
练习题 (八)
题目:Count Complete Tree NodesGiven acompletebinary tree, count the number of nodes.Definition of a complete binary tree fromWikipedia:In a complete bin...
分类:其他好文   时间:2015-07-02 22:25:05    阅读次数:170
Oracle 11g之创建和管理表练习
创建表:SQL> create table name (empno number(4), ename VARCHAR2(10));查看表结构:desc name;SQL> desc dept_temp;Name Null? Type----------------------...
分类:数据库   时间:2015-07-02 21:07:26    阅读次数:171
How Much Did It Rain? Winner's Interview: 1st place, Devin Anzelmo
How Much Did It Rain? Winner's Interview: 1st place, Devin AnzelmoAn early insight into the importance of splitting the data on the number of radar sc...
分类:Windows程序   时间:2015-07-02 20:57:27    阅读次数:296
SQL Script for select data from ebs and make a csv file to FTP
DECLARE CURSOR cur_lcy_test IS SELECT rcta.customer_trx_id, rcta.trx_number, rcta.trx_date FROM ra_customer_trx_all rcta WHERE rcta.customer_trx_id = 11993; -- rec_lcy_test cur_lc...
分类:数据库   时间:2015-07-02 17:37:13    阅读次数:189
#leetcode#Count Complete Tree Nodes
Given a complete binary tree, count the number of nodes. Definition of a complete binary tree from Wikipedia: In a complete binary tree every level, except possibly the last, is completely fille...
分类:其他好文   时间:2015-07-02 15:47:37    阅读次数:119
在同一个表中将varchar2类型的数据转存到blob类型的字段中
用一条修改语句即可:update t_content set f_body=rawtohex(f_check) where f_type in (0,4)此处须用rawtohex()函数将f_check转成16进制,不然会报ORA-01465: invalid hex number(ORA-0146...
分类:其他好文   时间:2015-07-02 15:37:24    阅读次数:134
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