if the query returns no rows when the cursor is opened , PL/SQL does not raise an exception . However , you can test the status of the cursor after a fetch using the SQL%ROWCOUNT cursor attribute . fetch: FETCH cursor_name INTO [variable1, variable2 ...] | record_name ; 例如 : L...
用信号通知 Microsoft® SQL Server™ 实用工具一批 Transact-SQL 语句的结束。 GO 不是 Transact-SQL 语句;而是可为 osql 和 isql 实用工具及 SQL Server 查询分析器识别的命令。 如果你的SQL过长的时候,就要写GO,或者有一些语句,它只能是第一句操作的,在之前你也得写 GO ,GO的意思 是 分批处理语句 有...
可以在ob的jdbcurl中显示设置参数 useCursorFetch=true (>=5.0版驱动开始支持),此时底层读取数据时会使用服务器端游标且每次从服务端批量读取 fetch_size 条数据进行处理,从而避免掉大数据量下占用堆空间大甚至 OOM 的问题(该推荐配置与UF30微服务略有不同). 推荐的OB jdbc url格式如下(读写都可以使用该格式;oce...
Optionally, call SQLGetCursorName to get the cursor name if positioned updates will be done by using the WHERE CURRENT OF clause and a cursor name was not supplied with SQLSetCursorName in Step 3. Call SQLNumResultCols to get the number of columns (C) in the rowset. Use column...
HOW TO use SQL IN Clause in cursor.execute() yg li October 23, 2010 12:52AM Sorry, you can't reply to this topic. It has been closed. Content reproduced on this site is the property of the respective copyright holders. It is not reviewed in advance by Oracle and does not necessarily...
Delete the semicolon (;) at the end of the select query SQL statement. Press Enter to move the cursor down one line, and then type UNION on the new line. Click the tab for the next select query that you want to combine in the union query. Repeat...
sqlserver cursor 的用法sqlserverusego 看了几篇文章,云里雾里,直到这篇本人才算有所收获。SQLSERVER 中GO的作用详解 具体不废话了,请看下文详解。usedb_CSharp go select *, 备注=case when Grade>=90 then '成绩优秀' when Grade<90 and Grade>=80 then '成绩良好' when Grade<80 and Grad ...
This error occurs in the Client Cursor Engine when it attempts to convert the value of type DBTYPE_DBTIMESTAMP to DBTYPE_VARIANT.ResolutionThere are several ways to work around this problem:Use a server-side cursor for the recordset. Remove the default value that is specified for ...
In the Settings tab, in the file path, place your cursor in the location where you want to add the parameter. Select the parameter icon and select your parameter. View a preview of the parameter value. The current (default) value is shown in the preview. You'll be prompted to select...
1. Determine what version of SQL Server you have and double-click the link below to download the zip file of SQL templates. In the zip file, click on the TRACETMPL folder and double-click on the .tdf file for your version and SQL Profiler will auto...