Caused exception message is: ORA-01789: query block has incorrect number of result columns
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情景一:
表示在使用union all 合并表时列的数量不一致、肯定是哪里漏了一个字段
情景二:
sql的格式不正确，比如说sql嵌套的时候，将别名放在了括号里面等等情况
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- Caused exception message is: ORA-01789: query block has incorrect number of result columns
- Caused exception message is: 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
- 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 错误
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