Specifies any field or combination of fields in the table for creating a candidate index. A table can have multiple candidate indexes. However, if you previously created a primary index with one of thePRIMARY KEYoptions, you cannot include the field that was specified for the primary index. ...
You can also use theSET COLLATEcommand before creating an index. For more information about setting collation sequences, seeOptimizing International ApplicationsandSET COLLATE Command. REFERENCES TableName2 [TAG TagName1] Specifies the parent table to which a persistent relationship is established. The ...
ALTER TABLE modifies a table definition by altering, adding, or dropping columns and constraints. ALTER TABLE also reassigns and rebuilds partitions, or disables and enables constraints and triggers.
(); SqlCommand command =newSqlCommand("SELECT TOP(1) Photo.PathName(), GET_FILESTREAM_TRANSACTION_CONTEXT() FROM employees", connection); SqlTransaction tran = connection.BeginTransaction(IsolationLevel.ReadCommitted); command.Transaction = tran;using(SqlDataReader reader = command.ExecuteReader()) {...
Creates a table having the specified fields.The Visual FoxPro ODBC Driver supports the native Visual FoxPro language syntax for this command. For driver-specific information, see Driver Remarks.SyntaxCopy CREATE TABLE | DBF TableName1 [NAME LongTableName] [FREE] (FieldName1FieldType [(n...
DROP ROLE Command 從資料庫中移除角色。 sp_addrole Command 在目前資料庫中建立新的資料庫角色。 sp_droprole Command 從目前資料庫移除資料庫角色。 sp_addrolemember Command 在目前資料庫的資料庫角色中,加入資料庫使用者、資料庫角色、Windows 登入或 Windows 群組。 除 Analytics Platform System (PDW) 和 Azu...
-- To avoid storing the login and password in the script file, the value-- is passed into SQLCMD as a scripting variable. For information about-- how to use scripting variables on the command line and in SQL Server-- Management Studio, see...
Grant Privileges on a Database in MySQL Top 50 Tricky SQL Queries for Interview How to Use Union in SQL Queries SQL Exercises – Complex Queries ByMeenakshi Agarwal Follow: Hi, I'm Meenakshi Agarwal. I have a Bachelor's degree in Computer Science and a Master's degree in Computer Applicati...
table to the HistoryCleanupTask_1 job.EXEC [dbo].[sp_add_jobstep] @job_name = N'HistoryCleanupTask_1', @step_name = N'Reorganize all indexes on HumanResources.Employee table', @subsystem = N'TSQL', @command = N'USE[AdventureWorks2022]; GOALTERINDEX[AK_Employee_LoginID]ON[Human...
SELECT * INTO #student_backup FROM user_db.student_admin.student As in Oracle, when a table is copied in SQL Server, the referential integrity definitions are not copied to the new table.If you need to copy data into tables using a SELECT statement, consider creating the table first, and...