在使用Union all连接时,若A集合中某列为nvarchar2或nvarchar类型,而B集合中无此列,用‘ ’ 来代替是会报字符集不匹配,解决方法有两种,见下面的示例 例: select '中国','China',cast('中国' as nvarchar2(10)) T from dual union all select '美国','USA','' from dual; select '中国','China',cast('中国' as nvarchar2(10)) T from dua
plsql 登录后,提示数据库字符集(AL32UTF8)和客户端字符集(ZHS16GBK)不一致 (2014-07-25 18:40:34)转载▼ 标签: it 分类: Database Database character set (AL32UTF8) and Client character set (ZHS16GBK) are different. Character set conversion may cause unexpected results. Note: you can se
1,查Oracle数据库创建时候的字符集:oracle服务器端执行 SQL> select name, value$ from sys.props$ where name like 'NLS%'; NAME VALUE$------------------------------ ----------------------------------------NLS_LANGUAGE AMERICANNLS_
oracle当多表union时遇到nvarchar2类型时报错 字符集不匹配对使用nvarchar的地方,加上 to_char( nvarchar 的变量或字段 ) 如:select to_char(name),price from aa union allselect to_char(name),price from bb 3张表aa,bb,cc都有 name price 字段 查询价格最高的前3位姓名 select * from(select to_char(name),price fro