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--10000--------------СÕÅ----------
--20000------------СÀî,С³Â-------
--30000-----------СÍõ,СÖÜ,СÃ×---

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)
SELECT a,SUBSTR(b, SP, EP - SP) STR
from (SELECT a,
b,
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from n
CONNECT BY ROWNUM < 100)
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