connect by ¸¦ ÀÌ¿ëÇÑ Æ®¸®±¸Á¶¿¡¼­ Path ¸¦ ±¸ÇÏ´Â ¹æ¹ý
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Áú¹®]connect by ¸¦ ÀÌ¿ëÇÑ Æ®¸®±¸Á¶¿¡¼­ Path ¸¦ ±¸ÇÏ´Â ¹æ¹ý
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»¶§
Á¶°Ç¿¡ Data 2 ÀÇ Á¶°ÇÀ» Á־

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

ÀÌ·±½ÄÀ¸·Î ¸¸µå¼ÌÀ»°Çµ¥¿ä. ¼ø¼­¸¦ ¹Ý´ë·Î ÇϽðí,

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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