Mybatis Generator 代码生成插件拓展,增加:查询单条数据插件(SelectOneByExamplePlugin)、MySQL分页插件(LimitPlugin)、数据Model链式构建插件(ModelBuilderPlugin)、Example Criteria 增强插件(ExampleEnhancedPlugin)、Example 目标包修改插件(ExampleTargetPlugin)、批量插入插件(BatchInsertPlugin)、逻辑删除插件(LogicalDeletePlugi...
serverTimezone=GMT%2B8"13driverClass="com.mysql.cj.jdbc.Driver"password="x5"userId="root"/>14<!--配置实体类生成路径-->15<javaModelGeneratortargetPackage="com.wf.ew.demo1.model"targetProject="reverse\src\main\java"/>16<!--配置MapperXML文件生成路径-->17<sqlMapGeneratortargetPackage="com.wf....
INSERT or UPDATE to this table will fail if the resulting row exceeds the size limit. The Example of Successful INSERT: 1 2 3 4 5 6 7 8 INSERT INTO tbl_LargeTable VALUES ( REPLICATE('z', 5000), REPLICATE('b', 3000), REPLICATE('c', 40), REPLICATE('a', 5) ) The example of...
.join(Card7daysRecv, JOIN.LEFT_OUTER, on=(User.uid == Card7daysRecv.receive_uid)).order_by(User.create_time).limit(limit).offset(offset) 另外一些使用的时候需要注意的问题 在遇到复杂查询的时候有个不可缺少的工具就是打印以下自己的 orm 究竟构造了什么语句。可以使用 query.sql() 方便的看到。
whereliteral-typeis one of the following options: Example: UPDATEOrdersSETOpenDate={d'1997-01-29'} WHEREOrderID=1023 Scalar Functions You can use scalar functions in SQL statements with the following syntax: {fn scalar-function} wherescalar-functionis a scalar function supported by the DataDirect...
limit skip distinct sorted 3.4 性能与线程安全 性能问题 简单对象: 外部迭代 > Stream并行迭代 > Stream串行迭代 复杂对象: Stream并行迭代 > Stream串行迭代 > 外部迭代 线程安全 并行Stream操作(parallelStream)会导致线程安全问题 解决方式: 使用线程安全的结束操作、使用线程安全的集合、自行加锁 ...
(); + stmt.sqlConnection = conn;//global + stmt.text = "SELECT DISTINCT url FROM mru_files ORDER BY id DESC LIMIT 10"; + stmt.addEventListener(air.SQLErrorEvent.ERROR, sql_queryError); + stmt.addEventListener(air.SQLEvent.RESULT, function (event) { + var result = stmt.getResult();...
The intent is to use a proposed field name (email) in the constructed query and find out if the SQL is valid or not. We don't care about matching the email address (which is why we use a dummy'x'), and the--marks the start of an SQL comment. This is an effective way to "co...
Selecting a database and running a SELECT query against a table in that database is also accomplished in the usual manner, as is exiting the MySQL Monitor: mysql> USE world; mysql> SELECT Name, Population FROM City ORDER BY Population DESC LIMIT 5; +---+---+ | Name | Population |...
64-bit IIS memory limit !!! 999 non standard linked in error A blocking operation was interrupted by a call to WSACancelBlockingCall A call to PInvoke function has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. (.NET ...