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mybatis实现增删改查
MyBatis 是支持普通 SQL 查询,存储过程和高级映射的优秀持久层框架。MyBatis 消除 了几乎所有的 JDBC 代码和参数的手工设置以及结果集的检索。MyBatis 使用简单的 XML 或注解用于配置和原始映射,将接口和 Java 的 POJOs(Plan Old Java Object...
分类:其他好文   时间:2014-07-10 00:39:15    阅读次数:224
【LeetCode】Valid Palindrome
题目 Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car" i...
分类:其他好文   时间:2014-07-02 09:49:04    阅读次数:271
ORA-01039
Execution Plan----------------------------------------------------------ERROR:ORA-01039: insufficient privileges on underlying objects of the viewSP2-...
分类:其他好文   时间:2014-07-01 19:43:46    阅读次数:298
MySQL中EXPLAIN命令详解
explain显示了mysql如何使用索引来处理select语句以及连接表。可以帮助选择更好的索引和写出更优化的查询语句。使用方法,在select语句前加上explain就可以了:如:explainselectsurname,first_nameforma,bwherea.id=b.idEXPLAI...
分类:数据库   时间:2014-07-01 17:30:32    阅读次数:209
maven问题之Could not calculate build plan:
问题描述: Could not calculate build plan: Failure to transfer org.apache.maven.plugins:maven-surefire-plugin:pom:2.7.1 from http://repo1.maven.org/maven2 was cached in the local repository, resolution wi...
分类:其他好文   时间:2014-07-01 11:14:35    阅读次数:279
获得执行计划方法二-explain plan
1安装$ORACLE_HOME/rdbms/admin/utlxplan.sql(UNIX)脚本生成一个表这个程序会创建一个名为plan_table的表2运行explainPLAN[SETSTATEMENT_ID[=]<stringliteral>][INTO<table_name>]FOR<sql_statement>其中:STATEMENT_ID:是一个唯一的字符串,把当前执行计划..
分类:其他好文   时间:2014-06-29 21:05:55    阅读次数:299
LeetCode Valid Palindrome
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car" is no...
分类:其他好文   时间:2014-06-27 10:36:41    阅读次数:183
LeetCode:Valid Palindrome
Given a string, determine if it is a palindrome, considering only alphanumeric  characters and ignoring cases. For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car" i...
分类:其他好文   时间:2014-06-24 18:16:02    阅读次数:147
LeetCode: Valid Palindrome [125]
【题目】 Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases. For example, "A man, a plan, a canal: Panama" is a palindrome. "race a car" is not a palindrome. Note: Have you consider that the string m...
分类:其他好文   时间:2014-06-24 15:35:07    阅读次数:150
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