SQL SERVER 语法检查方法

1.SET   NOEXEC  方式 : 编译但不执行语句

 

When SET NOEXEC is ON, SQL Server compiles each batch of Transact-SQL statements but does not execute them. When SET NOEXEC is OFF, all batches are executed after compilation.

The execution of statements in SQL Server has two phases: compilation and execution. This setting is useful for having SQL Server validate the syntax and object names in Transact-SQL code when executing. It is also useful for debugging statements that would generally be part of a larger batch of statements.

The setting of SET NOEXEC is set at execute or run time and not at parse time.

 

The following example uses NOEXEC with a valid query, a query with an object name that is not valid, and a query with incorrect syntax.

 

示例：

 USE AdventureWorks;
GO
PRINT 'Valid query';
GO
-- SET NOEXEC to ON.
SET NOEXEC ON;
GO
-- Inner join.
SELECT e.EmployeeID, e.Title, v.Name
FROM HumanResources.Employee e
   INNER JOIN Purchasing.PurchaseOrderHeader poh
   ON e.EmployeeID = poh.EmployeeID
   INNER JOIN Purchasing.Vendor v
   ON poh.VendorID = v.VendorID;
GO
-- SET NOEXEC to OFF.
SET NOEXEC OFF;
GO

PRINT 'Invalid object name';
GO
-- SET NOEXEC to ON.
SET NOEXEC ON;
GO
-- Function name used is a reserved keyword.
USE AdventureWorks;
GO
CREATE FUNCTION dbo.Values(@EmployeeID INT)
RETURNS TABLE
AS
RETURN (SELECT PurchaseOrderID, TotalDue
   FROM dbo.PurchaseOrderHeader
   WHERE EmployeeID = @EmployeeID)
-- SET NOEXEC to OFF.
SET NOEXEC OFF
GO

PRINT 'Invalid syntax';
GO
-- SET NOEXEC to ON.
SET NOEXEC ON;
GO
-- Built-in function incorrectly invoked
SELECT *
FROM fn_helpcollations;
-- Reset SET NOEXEC to OFF.
SET NOEXEC OFF;
GO

 

 

2.SET   PARSEONLY :解析但不编译或执行语句

   When SET PARSEONLY is ON, SQL Server only parses the statement. When SET PARSEONLY is OFF, SQL Server compiles and executes the statement.

The setting of SET PARSEONLY is set at parse time and not at execute or run time.

Do not use PARSEONLY in a stored procedure or a trigger. SET PARSEONLY returns offsets if the OFFSETS option is ON and no errors occur.

 

示例：

SET   PARSEONLY   on
 

CREATE FUNCTION dbo.Values(@EmployeeID INT)
RETURNS TABLE
AS
RETURN (SELECT PurchaseOrderID, TotalDue
   FROM dbo.PurchaseOrderHeader
   WHERE EmployeeID = @EmployeeID)

SET   PARSEONLY   off

  

 

 以上两种方法都经过实际应用检验，其执行效果与通过"查询分析器”进行语法分析效果是一致的。