动态sql游标

运行以下查询时，“.”附近的语法不正确

DECLARE 
@StaffID INT = 4,
@Cursorsql nvarchar(4000);  

SET @Cursorsql = 'DECLARE curStaff CURSOR FOR ';
SET @Cursorsql = @Cursorsql + ' SELECT s.StaffID, o.OfficeName, s.FirstName '; 
SET @Cursorsql = @Cursorsql + ' ' + 's.LastName FROM Staff s  '; 
SET @Cursorsql = @Cursorsql + ' INNER JOIN Offices o ON o.OfficeID = s.OfficeID '; 
SET @Cursorsql = @Cursorsql + ' WHERE (s.OfficeID = @OfficeID OR @OfficeID = 0) '; 
IF @StaffID > 0 
 SET @Cursorsql = @Cursorsql + ' AND s.StaffID = @StaffID '; 
SET @Cursorsql = @Cursorsql + ' ORDER BY s.OfficeID, s.FirstName, s.LastName ';  

exec (@Cursorsql);

您在s.FirstName之后漏掉了一个逗号：

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打印动态sql并检查语法错误始终是一个好主意，也是一种简单的故障排除方法。选择列表中的s.FirstName和s.LastName之间缺少逗号

试试这个-

DECLARE 
@StaffID INT = 4,
@Cursorsql nvarchar(4000);  

SET @Cursorsql = 'DECLARE curStaff CURSOR FOR ';
SET @Cursorsql = @Cursorsql + ' SELECT s.StaffID, o.OfficeName, s.FirstName, '; 
SET @Cursorsql = @Cursorsql + ' s.LastName FROM Staff s  '; 
SET @Cursorsql = @Cursorsql + ' INNER JOIN Offices o ON o.OfficeID = s.OfficeID '; 
SET @Cursorsql = @Cursorsql + ' WHERE (s.OfficeID = @OfficeID OR @OfficeID = 0) '; 
IF @StaffID > 0 
 SET @Cursorsql = @Cursorsql + ' AND s.StaffID = @StaffID '; 
SET @Cursorsql = @Cursorsql + ' ORDER BY s.OfficeID, s.FirstName, s.LastName ';  
sp_executesql @CursorSql, N'@StaffID int', @StaffID;

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不相关，但不能将exec@CursorSql与参数一起使用。您需要使用sp_executesql@CursorSql，N'@StaffID int'，@staffidy您正在执行动态SQL，但仍然将参数设置为可选或@OfficeID=0？请注意，SQL Server不喜欢未正确优化的此类查询。你最好在必要时删除/添加条件。

DECLARE 
@StaffID INT = 4,
@Cursorsql nvarchar(4000);  

SET @Cursorsql = 'DECLARE curStaff CURSOR FOR ';
SET @Cursorsql = @Cursorsql + ' SELECT s.StaffID, o.OfficeName, s.FirstName, '; 
SET @Cursorsql = @Cursorsql + ' s.LastName FROM Staff s  '; 
SET @Cursorsql = @Cursorsql + ' INNER JOIN Offices o ON o.OfficeID = s.OfficeID '; 
SET @Cursorsql = @Cursorsql + ' WHERE (s.OfficeID = @OfficeID OR @OfficeID = 0) '; 
IF @StaffID > 0 
 SET @Cursorsql = @Cursorsql + ' AND s.StaffID = @StaffID '; 
SET @Cursorsql = @Cursorsql + ' ORDER BY s.OfficeID, s.FirstName, s.LastName ';  
sp_executesql @CursorSql, N'@StaffID int', @StaffID;