oracle 数据库默认账号oracle一行变多行实现教程

oracle一行变多oracle账号行实现教程

SELECT REGEXP_SUBSTR('1,2,3,4,5,6,7,8,9', '[^,]+', 1, ROWNUM) FROM DUAL CONNECT BY ROWNUM <= LENGTH('1,2,3,4,5,6,7,8,9') - LENGTH(REPLACE('1,2,3,4,5,6,7,8,9', ',', '')) + 1
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