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connect by prior ¸¦ ÀÌ¿ëÇÏ¿© Tree ±¸Á¶ÀÇ °á°ú¸¦ ¾ò¾ú½À´Ï´Ù.
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idx -- °íÀ¯¹øÈ£
parent_idx -- »óÀ§¹øÈ£
name -- À̸§
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Parent 1
- Child 1-1
- SubChild 1-1-1
- SubChild 1-1-2
- Data 1
- Data 2
- Child 1-2
- Child 1-3
Parent 2
- Child 2-1
- Child 2-2
À̿Ͱ°Àº °á°ú°¡ ³ª¿ÔÀ»¶§
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Parent 1
- Child 1-1
- SubChild 1-1-2
- Data 2
ÀÌ·±½ÄÀÇ °á°ú¸¦ µµÃâ ÇÒ ¼ö ÀÖ´Â Äõ¸®¸¦ ¸¸µé ¼ö ÀÖ´ÂÁö
µµ¿òÀ» ºÎʵ右´Ï´Ù.
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CONNECT BY PRIOR idx = parent_idx
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CONNECT BY PRIOR parent_idx = idx
Data 2 ÀÇ Á¶°ÇÀ» Áֽðí,
Á¤·Ä¸¸ level desc ·Î ÇØÁÖ½Ã¸é µÉ °Ì´Ï´Ù.
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