SQL INSERT INTO语句 INSERT INTOtable_name( column1, column2...columnN) VALUES ( value1, value2...valueN); SQL UPDATE语句 UPDATEtable_nameSETcolumn1=value1, column2=value2...columnN=valueN [WHERECONDITION]; SQL DELETE语句 DELETEFROMtable_name WHERE {CONDITION}; SQL CREATE DATABASE语句 C...
Transation) Plan } type UpdatePlanner interface { /* 解释执行 insert 语句,返回被修改的记录条数 */ ExecuteInsert(data *parser.InsertData, tx *tx.Transation) int /* 解释执行 delete 语句,返回被删除的记录数 */ ExecuteDelete(data *parser.DeleteData, tx *tx.Transation) int /* 解释执行 create ...
To check the vendor name to see that it has changed, type: Select VendId, Name from TrnVendor where VendId = 'TV001';To commit the change, type: Commit work; Note: You can run multiple SQL statements at the same time, as in the following example. ...
1、严格 SQL 模式下,对 NOT NULL 的字段设置 NULL ,会直接报错,更新失败 2、非严格 SQL 模式下,对 NOT NULL 的字段设置 NULL ,会将字段值设置字段类型对应的默认值 关于字段类型的默认值,可查看:Data Type Default Values 关于sql_mode ,可查看:Server SQL Modes 通常情况下,生成环境的 MySQL 一般都是严格...
"@Identity", SqlDbType.Int, 0, "CategoryID") parameter.Direction = ParameterDirection.Output connection.Open() Dim categories As DataSet = New DataSet adapter.Fill(categories, "Categories") Dim newRow As DataRow = categories.Tables("Categories").NewRow() ...
2The specified table-reference cannot be ananalyze_table-expression(that is, the result of a data mining model) or adata-change-table-reference(that is, the result of a nested UPDATE, DELETE, or INSERT statement) (SQLSTATE 42601).
For more information on string data type lengths, see char and varchar (Transact-SQL) and nchar and nvarchar (Transact-SQL). For best performance, we recommend that data be inserted or updated in chunk sizes that are multiples of 8040 bytes. If the column modified by the .WRITE clause is...
Transact-SQL Syntax Conventions (Transact-SQL) BACKUP and RESTORE Statements (Transact-SQL) Built-in Functions (Transact-SQL) Collation (Transact-SQL) Control-of-Flow Language (Transact-SQL) Cursors (Transact-SQL) Data Definition Language (DDL) Statements (Transact-SQL) Data Manipulation Language (...
For more information on string data type lengths, see char and varchar (Transact-SQL) and nchar and nvarchar (Transact-SQL). For best performance, we recommend that data be inserted or updated in chunk sizes that are multiples of 8040 bytes. If the column modified by the .WRITE clause is...
当您需要对Transactional表或Delta表执行INSERT、UPDATE、DELETE操作时,可以通过MERGE INTO功能将这些操作合并为一条SQL语句,根据与源表关联的结果,对目标Transactional表执行插入、更新或删除操作时,只需要执行一次全表扫描操作,以提高执行效率。