由于无法预测键值,因此查询处理器还无法预测必须访问哪个成员表。 为了处理这种情况,SQL Server 生成了具有条件逻辑(称为动态筛选)的执行计划,可基于输入参数值来控制访问哪个成员表。 假设在 Server1 上执行了 GetCustomer 存储过程,则执行计划逻辑可以表示如下:...
SQL_DATABASE_NAME 1.0 A character string with the name of the current database in use, if the data source defines a named object called "database".In ODBC 3.x, the value returned for this InfoType can also be returned by calling SQLGetConnectAttr with an Attribute argument of SQL_ATTR...
GET CONVERSATION GROUP MOVE CONVERSATION RECEIVE SEND User-defined functions can be nested; that is, one user-defined function can call another. The nesting level is incremented when the called function starts execution, and decremented when the called function finishes execution. User-defined functions...
Table 17. Class Code 24: Invalid Cursor State SQLSTATE Value Meaning SQLCODE Values 24501 The identified cursor is not open. -501, -507 24502 The cursor identified in an OPEN statement is already open. -502 24504 The cursor identified in the UPDATE, DELETE, SET, or GET statement is not ...
GET CONVERSATION GROUP MOVE CONVERSATION RECEIVE SEND User-defined functions can be nested; that is, one user-defined function can call another. The nesting level is incremented when the called function starts execution, and decremented when the called function finishes execution. User-defined functions...
getdate(), 1); -- 批量插入 SQLServer一次批量插入最多1000行左右 insert into dotnetcrazy.dbo.users(username, password, email, tel, usercode, createtime, updatetime, datastatus) values ('xxx', '7c4a8d09ca3762af61e59520943dc26494f8942b', 'xxx@qq.com', '13738002038', newid(), getdate...
流字段(数据类型%Stream.GlobalCharacter或%Stream.GlobalBinary) 查询时计算的字段(计算的COMPUTECODE或瞬态) 是列表集合的字段(具有LogicalToOdbc转换) 一个执行LogicalToOdbc转换并且不是数据类型%Date,%Time或%PosixTime`的字段 覆盖了LogicalToOdbc转换代码的字段 执行LogicalToStorage转换的字段 地图数据输入使用检索...
getIdType() == IdType.AUTO) { /* 自增主键 */ keyGenerator = Jdbc3KeyGenerator.INSTANCE; keyProperty = tableInfo.getKeyProperty(); // 去除转义符 keyColumn = SqlInjectionUtils.removeEscapeCharacter(tableInfo.getKeyColumn()); } else { if (null != tableInfo.getKeySequence()) { keyGenerator...
Access Code - DELETE Statement with DISTINCTROW and T-SQL Access Now() vs. T-SQL GETDATE() ? ADD and SUBTRACT depending on the condition is CASE STATEMENT ADD COLUMN to variable table? Add prefix in data column Add Time in SQL HH:MM:SS to another HH:MM:SS Adding a column to a lar...
CHARACTER CONVERSION FROM CCSID from-ccsid TO to-ccsid FAILED WITH ERROR CODE error-code FOR TABLE dbid.obid COLUMN column-number REQUESTED BY csect-name -20235 THE COLUMN column-name CANNOT BE ADDED, ALTERED, or DROPPED BECAUSE table-name IS A MATERIALIZED QUERY TABLE -20240 INVALID SPECIFIC...