遇到错误：A cursor with thename ' ' already exists，想要看是什么代码导致的。找到下面几种方法.
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--测试声明Cursor并且打开
DECLARE vend_cursor CURSOR
FOR SELECT * FROMPurchasing.Vendor
OPEN vend_cursor
FETCH NEXTFROMvend_cursor;
--使用下面的三种方法都可以
SELECT ec.session_id,ec.name,ec.properties,ec.creation_time,ec.is_open,ec.writes,ec.reads,t.text
FROM sys.dm_exec_cursors(0)ec
CROSS APPLYsys.dm_exec_sql_text(ec.sql_handle)t
dbcc activecursors(0)
SELECT *FROMMASTER..SYSCURSORS
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结果：
