ORA-01789: query block has incorrect number of result columns
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原文链接：http://blog.csdn.net/shanjunpeng/article/details/23374317
描述：查询快具有不正确的列数。
原因：可能是在union 、union all 时，不同语句查询的结果字段数不一致。
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- ora-01789:query block has incorrect number of result columns
- ora-01789:query block has incorrect number of result columns
- ORA-01789:query block has incorrect number of result columns
- ORA-01789: query block has incorrect number of result columns
- Caused exception message is: ORA-01789: query block has incorrect number of result columns
- ora-01789:query block has incorrect number of result columns 错误
- Caused exception message is: ORA-01789: query block has incorrect number of result columns
- 解决java.sql.SQLException: ORA-01789: query block has incorrect number of result columns
- Caused exception message is: ORA-01789: query block has incorrect number of result columns
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