ORACLE数据库导入数据总结

1、交换两列值 update tableName set a=b,b=a 2、创建序列 create sequence 序列名 increment by 每次增加几 start with 开始数字 maxvalue 最大数字; 查询序列：select SEQUENCE_OWNER,SEQUENCE_NAME from dba_sequences where  sequence_name like

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