SQL中的單記錄函數(shù)
1.ASCII
返回與指定的字符對(duì)應(yīng)的十進(jìn)制數(shù)
SQL> select ascii( A ) A,ascii( a ) a,ascii( 0 ) zero,ascii( ) space from dual
A A ZERO SPACE
--------- --------- --------- ---------
65 97 48 32
2.CHR
給出整數(shù),返回對(duì)應(yīng)的字符
SQL> select chr(54740) zhao,chr(65) chr65 from dual
ZH C
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