OracleÖÐTO_DATE¸ñʽ
TO_DATE¸ñʽ(ÒÔʱ¼ä:2007-11-02 13:45:25ΪÀý)
Year:
yy two digits Á½Î»Äê ÏÔʾֵ:07
yyy three digits ÈýλÄê ÏÔʾֵ:007
yyyy four digits ËÄλÄê ÏÔʾֵ:2007
Month:
mm number Á½Î»Ô ÏÔʾֵ:11
mon abbreviated ×Ö·û¼¯±íʾ ÏÔʾֵ:11ÔÂ,ÈôÊÇÓ¢Îİæ,ÏÔʾnov
month spelled out ×Ö·û¼¯±íʾ ÏÔʾֵ:11ÔÂ,ÈôÊÇÓ¢Îİæ,ÏÔʾnovember
Day:
dd number µ±Ôµڼ¸Ìì ÏÔʾֵ:02
ddd number µ±ÄêµÚ¼¸Ìì ÏÔʾֵ:02
dy abbreviated µ±Öܵڼ¸Ìì¼òд ÏÔʾֵ:ÐÇÆÚÎå,ÈôÊÇÓ¢Îİæ,
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SELECT ID,
col_name,
SUBSTR(col_name, 1, INSTR(col_name || ',', ',', 1, 1) - 1) C1,
SUBSTR(col_name,
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