func_misc.result
上传用户:romrleung
上传日期:2022-05-23
资源大小:18897k
文件大小:2k
- select format(1.5555,0),format(123.5555,1),format(1234.5555,2),format(12345.55555,3),format(123456.5555,4),format(1234567.5555,5),format("12345.2399",2);
- format(1.5555,0) format(123.5555,1) format(1234.5555,2) format(12345.55555,3) format(123456.5555,4) format(1234567.5555,5) format("12345.2399",2)
- 2 123.6 1,234.56 12,345.556 123,456.5555 1,234,567.55550 12,345.24
- select inet_ntoa(inet_aton("255.255.255.255.255.255.255.255"));
- inet_ntoa(inet_aton("255.255.255.255.255.255.255.255"))
- NULL
- select inet_aton("255.255.255.255.255"),inet_aton("255.255.1.255"),inet_aton("0.1.255");
- inet_aton("255.255.255.255.255") inet_aton("255.255.1.255") inet_aton("0.1.255")
- 1099511627775 4294902271 65791
- select inet_ntoa(1099511627775),inet_ntoa(4294902271),inet_ntoa(511);
- inet_ntoa(1099511627775) inet_ntoa(4294902271) inet_ntoa(511)
- NULL 255.255.1.255 0.0.1.255
- select hex(inet_aton('127'));
- hex(inet_aton('127'))
- 7F
- select hex(inet_aton('127.1'));
- hex(inet_aton('127.1'))
- 7F000001
- select hex(inet_aton('127.1.1'));
- hex(inet_aton('127.1.1'))
- 7F010001
- select length(uuid()), charset(uuid()), length(unhex(replace(uuid(),_utf8'-',_utf8'')));
- length(uuid()) charset(uuid()) length(unhex(replace(uuid(),_utf8'-',_utf8'')))
- 36 utf8 16
- select length(format('nan', 2)) > 0;
- length(format('nan', 2)) > 0
- 1
- select concat("$",format(2500,2));
- concat("$",format(2500,2))
- $2,500.00
- create table t1 ( a timestamp );
- insert into t1 values ( '2004-01-06 12:34' );
- select a from t1 where left(a+0,6) in ( left(20040106,6) );
- a
- 2004-01-06 12:34:00
- select a from t1 where left(a+0,6) = ( left(20040106,6) );
- a
- 2004-01-06 12:34:00
- select a from t1 where right(a+0,6) in ( right(20040106123400,6) );
- a
- 2004-01-06 12:34:00
- select a from t1 where right(a+0,6) = ( right(20040106123400,6) );
- a
- 2004-01-06 12:34:00
- select a from t1 where mid(a+0,6,3) in ( mid(20040106123400,6,3) );
- a
- 2004-01-06 12:34:00
- select a from t1 where mid(a+0,6,3) = ( mid(20040106123400,6,3) );
- a
- 2004-01-06 12:34:00
- drop table t1;