Oracle Union操作时表结构字段类型不一致查询语句 -ORA-01790: expression must have same datatype as corresponding exp
Oracle union操作时字段类型不一致会报如下错误
--> ORA-01790: expression must have same datatype as corresponding expression
select * from ( SELECT table_name, column_name, data_type,DATA_LENGTH,COLUMN_ID FROM USER_TAB_COLUMNS WHERE table_name =upper('bb_sjb') UNION SELECT table_name, column_name, data_type,DATA_LENGTH,COLUMN_ID FROM USER_TAB_COLUMNS WHERE table_name =upper('bb_yzb') UNION SELECT table_name, column_name, data_type,DATA_LENGTH,COLUMN_ID FROM USER_TAB_COLUMNS WHERE table_name =upper('bb_zcpgb') UNION SELECT table_name, column_name, data_type,DATA_LENGTH,COLUMN_ID FROM USER_TAB_COLUMNS WHERE table_name =upper('bb_hbsjb') UNION SELECT table_name, column_name, data_type,DATA_LENGTH,COLUMN_ID FROM USER_TAB_COLUMNS WHERE table_name =upper('bb_bbqtb') ) WHERE COLUMN_NAME IN('ZCZE','XSSR','YYSR')
本文来自博客园,作者:IT情深,转载请注明原文链接:https://www.cnblogs.com/wh445306/p/16751873.html
【推荐】国内首个AI IDE,深度理解中文开发场景,立即下载体验Trae
【推荐】编程新体验,更懂你的AI,立即体验豆包MarsCode编程助手
【推荐】抖音旗下AI助手豆包,你的智能百科全书,全免费不限次数
【推荐】轻量又高性能的 SSH 工具 IShell:AI 加持,快人一步
· DeepSeek 开源周回顾「GitHub 热点速览」
· 物流快递公司核心技术能力-地址解析分单基础技术分享
· .NET 10首个预览版发布:重大改进与新特性概览!
· AI与.NET技术实操系列(二):开始使用ML.NET
· 单线程的Redis速度为什么快?