(1)
(a)
mysql> select char_length('I MCA');
mysql> select character_length('A SECTION');
(b)
mysql> select concat('I MCA A','A SECTION');
(c)
mysql> select concat_ws('=','I MCA','A SECTION');
(d)
mysql> select format(123456.1278912,2);
(e)
mysql> select lcase('I MCA');
(f)
mysql> select locate('SEC','A SECTION');
mysql> select position('SEC'IN'A SECTION');
(g)
mysql> select repeat('II MCA',3);
(h)
mysql> select replace('II MCA','MCA','MBA');
(i)Reverse a String
mysql> select reverse('A SECTION');
(j)
mysql> select substring('A SECTION',3);
(2) (a)
mysql> select curdate();
(b
mysql> select curtime();
(c)
mysql> select datediff('2008-8-2','2008-7-6');
(d)
mysql> select date_add('2008-7-6',interval 25 day);
(e)
mysql> select dayname('2008-08-01');
(f)
mysql> select dayofmonth('2008-06-04');
(g)
mysql> select dayofweek('2008-06-08');
(h)
mysql> select dayofyear('2008-01-22');
(I)
mysql> select hour('18:46:15');
(j)
mysql> select minute('18:46:15');
(k
mysql> select monthname('2008-01-22');
(l)
mysql> select now();
(3) (a)
mysql> select abs(-60);
mysql> select sin(60),cos(60),tan(60);
mysql> select acos(60),atan(60),asin(60);
mysql> select ceil(6.78),degrees(pi()),exp(-1);
mysql> select floor(6.69),format(6789012.987654,2);
mysql> select log(5),log(2,290),log(10,610);
mysql> select mod(123,10),degrees(pi()),pow(5,2);
mysql> select radians(60),rand(60),round(60.98);
mysql> select sign(-160),sqrt(269),tan(60);
mysql> select truncate(4.981,1),truncate(451.156,-1);
(4) (a)
mysql> select 0=1,5<4.5,4.9<=4.9,5>2,2>=2,8 between 8 and 12,greatest('S','O','A');
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