SQL Server

اسکریپت درج مقدار در جدول USE Accounting; int; INSERT INTO Orders (CustomerNo,OrderDate, EmployeeID) VALUES (gETDATE,1); = INSERT INTO OrderDetails (OrderID, PartNo, Description, UnitPrice, Qty) VALUES ‘2R2416’, ‘Cylinder Head’, 1300, 2); SELECT ‘The OrderID of the INSERTed row is ‘ +

SET استفاده از  USE AdventureWorks2008;  money;  = (SELECT MAX)UnitPrice) FROM Sales.SalesOrderDetail) 

برای انتخاب SELECT استفاده از  USE AdventureWorks2008;  money;  = MAX)UnitPrice) FROM Sales.SalesOrderDetail; 

SQL Server چند متغیر سیستمی       

 USE AdventureWorks2008;  GO  int;  SELECT * FROM Person.Person;   =

Batch USE AdventureWorks2008; varchar)50); --This DECLARE only lasts for this batch! = ‘Honey, I’’m home...’; PRINT ‘Done with first Batch...’; GO --This generates an error --isn’t declared in this batch PRINT ‘Done with second Batch’; GO PRINT ‘Done with third batch’; -- Notice that this still gets executed -- even after the error GO

نتیجه اجرای اسکریپت قبل  Done with first Batch...  Msg 137, Level 15, State 2, Line 2  Must declare the scalar variable  Done with third batch

جداگانه نوشته شوند Batch دستوراتی که باید در  CREATE DEFAULT  CREATE PROCEDURE  CREATE RULE  CREATE TRIGGER  CREATE VIEW

 USE Test;  SELECT TABLE_CATALOG  FROM INFORMATION_SCHEMA.TABLES  WHERE TABLE_NAME = ‘TestTable’;

Command از طریق SQL اجرای دستورات  C:\>sqlcmd -Usa -Pmypass -i testsql.sql [ -d ] [ -o ]   SQLCMD -Usa -Pmypass –Q “SELECT * FROM AdventureWorks2008.Production.Locati on”

EXEC نکات استفاده از  runs under a separate scope than code that calls it  By default, it runs under the same security context as the current user  It runs under the same connection and transaction context as the calling object  Concatenation that requires a function call must be performed on the EXEC string prior to actually calling the EXEC statement  EXEC NOT Availabe inside a user-defined function.

SQL روش دیگر اجرای دستورات  sp_executesql.

WAITFOR دستور  WAITFOR DELAY ‘01:00’;  WAITFOR TIME ‘10:00’;

 IF NOT EXISTS (  SELECT s.name AS SchemaName, t.name AS TableName FROM sys.schemas s  JOIN sys.tables t ON s.schema_id = t.schema_id  WHERE s.name = ‘dbo’ AND t.name = ‘OurIFTest’) CREATE TABLE OurIFTest( Col1 int PRIMARY KEY); SELECT ‘Found Table ‘ + s.name + ‘.’ + t.name FROM sys.schemas s JOIN sys.tables t ON s.schema_id = t.schema_id WHERE s.name = ‘dbo’ AND t.name = ‘OurIFTest’;

 Use AdventureWorks2008;  GO  SELECT TOP 10 SalesOrderID,  SalesOrderID % 10 AS ‘Last Digit’,  Position =  CASE SalesOrderID % 10 WHEN 1 THEN ‘First’ WHEN 2 THEN ‘Second’ WHEN 3 THEN ‘Third’ WHEN 4 THEN ‘Fourth’ ELSE ‘Something Else’  END  FROM Sales.SalesOrderHeader;

 SELECT TOP 10 SalesOrderID % 10 AS ‘OrderLastDigit’,  ProductID % 10 AS ‘ProductLastDigit’,“How Close?” =  CASE  WHEN (SalesOrderID % 10) < 3 THEN ‘Ends With Less Than Three’  WHEN ProductID = 6 THEN ‘ProductID is 6’  WHEN ABS(SalesOrderID % 10 - ProductID) <= 1 THEN ‘Within 1’  ELSE ‘More Than One Apart’  END  FROM Sales.SalesOrderDetail  ORDER BY SalesOrderID DESC;

مهار خطاها در اسکریپت  BEGIN TRY  { }  END TRY  BEGIN CATCH  { }  END CATCH [ ; ]

 BEGIN TRY  CREATE TABLE OurIFTest(Col1 int PRIMARY KEY);  END TRY  BEGIN CATCH  int, smallint, nvarchar(4000);  = ERROR_NUMBER(), = ERROR_SEVERITY(), = = ERROR_LINE (), = ERROR_MESSAGE();  = 2714  PRINT ‘WARNING: Skipping CREATE as table already exists’;  ELSE 16, 1 );  END CATCH