DB2 删除表(如果存在)等价 [英] DB2 Drop table if exists equivalent

问题描述

如果存在 DB2 表，我需要删除它，或者删除并忽略错误.

I need to drop a DB2 table if it exists, or drop and ignore errors.

推荐答案

先查询表是否存在，like

First query if the table exists, like

select tabname from syscat.tables where tabschema='myschema' and tabname='mytable'

如果它返回一些问题你的

and if it returns something issue your

drop table myschema.mytable

其他可能性是只发出 drop 命令并捕获如果表不存在将引发的异常.只需将该代码放入该方法的 try {...} catch (Exception e) {//Ignore } 块中即可.

Other possibility is to just issue the drop command and catch the Exception that will be raised if the table does not exist. Just put that code inside try {...} catch (Exception e) { // Ignore } block for that approach.

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