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select floor(5.5),floor(-5.5);
floor(5.5) floor(-5.5)
5 -6
select ceiling(5.5),ceiling(-5.5);
ceiling(5.5) ceiling(-5.5)
6 -5
select truncate(52.64,1),truncate(52.64,2),truncate(52.64,-1),truncate(52.64,-2);
truncate(52.64,1) truncate(52.64,2) truncate(52.64,-1) truncate(52.64,-2)
52.6 52.64 50 0
select round(5.5),round(-5.5);
round(5.5) round(-5.5)
6 -6
select round(5.64,1),round(5.64,2),round(5.64,-1),round(5.64,-2);
round(5.64,1) round(5.64,2) round(5.64,-1) round(5.64,-2)
5.6 5.64 10 0
select abs(-10), sign(-5), sign(5), sign(0);
abs(-10) sign(-5) sign(5) sign(0)
10 -1 1 0
select log(exp(10)),exp(log(sqrt(10))*2);
log(exp(10)) exp(log(sqrt(10))*2)
10.000000 10.000000
select pow(10,log10(10)),power(2,4);
pow(10,log10(10)) power(2,4)
10.000000 16.000000
select rand(999999),rand();
rand(999999) rand()
0.014231365187309 0.8078568166195
select pi(),sin(pi()/2),cos(pi()/2),abs(tan(pi())),cot(1),asin(1),acos(0),atan(1);
PI() sin(pi()/2) cos(pi()/2) abs(tan(pi())) cot(1) asin(1) acos(0) atan(1)
3.141593 1.000000 0.000000 0.000000 0.64209262 1.570796 1.570796 0.785398
select degrees(pi()),radians(360);
degrees(pi()) radians(360)
180 6.2831853071796
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