ORACLE函數大全@ Programmer Developer Notebook ...

ORACLE函數大全@ Programmer Developer Notebook ...

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日期:2025-06-10
SQL中的單記錄函數 1.ASCII 返回與指定的字符對應的十進制數; SQL> select ascii('A') A,ascii('a') a,ascii('0') zero,ascii(' ') space from dual; A A ZERO SPACE...看更多