1、先找出没有外键约束的表,truncate 2、有外键的表,先delete,再复位identity列 于是得出, 语句丁(注意没有使用游标)
To reset the identity column to the starting seed, you have to delete the rows, reseed the table and insert all the values again. When there are many rows, create a temporary table with all the columns and values from the original table except the identity column. Truncate the rows from ...
KEEPIDENTITY 引數。 在 Microsoft SQL Server Management Studio (SSMS) 中執行下列 Transact-SQL:SQL 複製 USE TestDatabase; GO TRUNCATE TABLE dbo.myIdentity; -- for testing BULK INSERT dbo.myIdentity FROM 'D:\BCP\myIdentity.bcp' WITH ( DATAFILETYPE = 'char', FIELDTERMINATOR = ',', KEEP...
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The integrity constraints still exist in the table. Requires ALTER and CONTROL permissions on the table schema and table respectively, to be able to perform this command. Only requires the ALTER permissions to truncate the table. DROP command is much slower than TRUNCATE but faster than DELETE. ...
If the table contains an identity column, the counter for that column is reset to the seed value defined for the column. If no seed was defined, the default value 1 is used. To retain the identity counter, use DELETE instead.A TRUNCATE TABLE operation can be rolled back within a ...
If the table contains an identity column, the counter for that column is reset to the seed value defined for the column. If no seed was defined, the default value1is used. To retain the identity counter, useDELETEinstead. ATRUNCATE TABLEoperation can be rolled back within a transaction. ...
Identity Property Reference Feedback Definition Namespace: Microsoft.SqlServer.TransactSql.ScriptDom Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll Package: Microsoft.SqlServer.TransactSql.ScriptDom v161.8901.0 Specifies the name of the account to be used when connecting outside the serv...
Microsoft SQL Server 将保留关键字用于定义、操作和访问数据库。保留关键字是 SQL Server 使用的 Transact-SQL 语言语法的一部分,用于分析和理解 Transact-SQL 语句和批处理。尽管在 Transact-SQL 脚本中使用 SQL Server 保留关键字作为标识符和对象名在语法上是可行的,但规定只能使用分隔标识符。 下表列出了 SQL ...
If you do not want to reset the identity value for a column, use the DELETE statement without a WHERE clause instead of the TRUNCATE TABLE statement. You can only perform inserts or deletes when working with timestamp columns. If you attempt to update a timestamp column, you receive this...