<propertyname="useActualColumnNames"value="true"/> <generatedKeycolumn="id"sqlStatement="JDBC"/> 1. 2. 3. 4. 5. Example类的具体用法 1.xxxExample.java类的属性含义 每个实体类都对应一个xxxExample.java类,这个类可以用来自定义sql,用Mybait自动生成工具生成了这个类后,可以看到类里面一般...
表示占位符String sql="select * from person where pname=?";//获取预编译处理的statementps=conn.prepareStatement(sql);//设置sql语句中的参数,第一个为sql语句中的参数的?(从1开始),第二个为设置的参数值ps.setString(1,"qzy");//向数据库发出 sql 语句查询,并返回结果集rs=ps.executeQuery();while(...
Here I did not get the query’s table data, I added union statement to get database tables names using sys.tables system view, and I've got the following result: Now I am able to simply get the list of all database tables and view any table I want, ...
The SQL SELECT statement includes other appropriate clauses based on your entries in the FROM clause (table name), WHERE clause, and Other clauses fields in the SQL Clauses window. For example, you can specify values to complete the following tasks: Select the columns Name, Add...
In this case, the content of the page does not change because the two conditions in the SQL statement are both true. There is an article with an id of 1, and 1 equals to 1 which is true. If a user changes the parameter to1 AND 1=2, it returns nothing because 1 is not equal ...
使用MySQL的“insert ... on duplicate key update”实现存在即更新操作,简化数据入库操作([issues#2])。 在开启allowMultiQueries=true(默认不会开启)情况下支持upsertByExample,upsertByExampleSelective操作,但强力建议不要使用(需保证团队没有使用statement提交sql,否则会存在sql注入风险)([issues#2])。
int insertByStatement(@Param("st")InsertStatement<T> statement); int updateByStatement(@Param("st")UpdateStatement<T> statement); int deleteByRestriction(@Param("restrictions")Restrictions<T> restrictions); int countByRestriction(@Param("restrictions")Restrictions<T> restrictions); ...
id属性:为insert这么一个sql语句取一个任意唯一的名字 parameterType:要执行的dao中的方法的参数,如果是类的话,必须使用全路径类(全路径名可以使用在mybatis.xml文件中配置的别名代替) --> <insert id="add1"> insert into students(id,name,sal) values(1,'哈哈',7000) ...
'set the ENAMES parameter value to EnameListNew OraDatabase.Parameters("ENAMES").Value = EnameListNew 'execute the insert sql statement OraDatabase.ExecuteSQL ("insert into department values (40,'DEVELOPMENT', :ENAMES)")
'set the Address to ADDRESS parameter Oradatabase.Parameters("ADDRESS").Value = AddressNew 'execute the sql statement which updates Address in the person_tab OraDatabase.ExecuteSQL ("insert into person_tab values (30,'Eric',:ADDRESS))