abs(x)
Description: Absolute value
Return type: same as the input
Example:
1 2 3 4 5 | SELECT abs(-17.4); abs ------ 17.4 (1 row) |
acos(x)
Description: Arc cosine
Return type: double precision
Example:
1 2 3 4 5 | SELECT acos(-1); acos ------------------ 3.14159265358979 (1 row) |
asin(x)
Description: Arc sine
Return type: double precision
Example:
1 2 3 4 5 | SELECT asin(0.5); asin ------------------ .523598775598299 (1 row) |
atan(x)
Description: Arc tangent
Return type: double precision
Example:
1 2 3 4 5 | SELECT atan(1); atan ------------------ .785398163397448 (1 row) |
atan2(y, x)
Description: Arc tangent of y/x
Return type: double precision
Example:
1 2 3 4 5 | SELECT atan2(2, 1); atan2 ------------------ 1.10714871779409 (1 row) |
bitand(integer, integer)
Description: Performs AND (&) operation on two integers.
Return type: bigint
Example:
1 2 3 4 5 | SELECT bitand(127, 63); bitand -------- 63 (1 row) |
cbrt(double precision)
Description: Cubic root
Return type: double precision
Example:
1 2 3 4 5 | SELECT cbrt(27.0); cbrt ------ 3 (1 row) |
ceil(double precision or numeric)
Description: Minimum integer greater than or equal to the parameter
Return type: same as the input
Example:
1 2 3 4 5 | SELECT ceil(-42.8); ceil ------ -42 (1 row) |
ceiling(double precision or numeric)
Description: Minimum integer (alias of ceil) greater than or equal to the parameter
Return type: same as the input
Example:
1 2 3 4 5 | SELECT ceiling(-95.3); ceiling --------- -95 (1 row) |
cos(x)
Description: Cosine
Return type: double precision
Example:
1 2 3 4 5 | SELECT cos(-3.1415927); cos ------------------- -.999999999999999 (1 row) |
cot(x)
Description: Cotangent
Return type: double precision
Example:
1 2 3 4 5 | SELECT cot(1); cot ------------------ .642092615934331 (1 row) |
degrees(double precision)
Description: Converts radians to angles.
Return type: double precision
Example:
1 2 3 4 5 | SELECT degrees(0.5); degrees ------------------ 28.6478897565412 (1 row) |
div(y numeric, x numeric)
Description: Integer part of y/x
Return type: numeric
Example:
1 2 3 4 5 | SELECT div(9,4); div ----- 2 (1 row) |
exp(double precision or numeric)
Description: Natural exponent
Return type: same as the input
Example:
1 2 3 4 5 | SELECT exp(1.0); exp -------------------- 2.7182818284590452 (1 row) |
floor(double precision or numeric)
Description: Not larger than the maximum integer of the parameter
Return type: same as the input
Example:
1 2 3 4 5 | SELECT floor(-42.8); floor ------- -43 (1 row) |
radians(double precision)
Description: Converts angles to radians.
Return type: double precision
Example:
1 2 3 4 5 | SELECT radians(45.0); radians ------------------ .785398163397448 (1 row) |
random()
Description: Random number between 0.0 and 1.0
Return type: double precision
Example:
1 2 3 4 5 | SELECT random(); random ------------------ .824823560658842 (1 row) |
ln(double precision or numeric)
Description: Natural logarithm
Return type: same as the input
Example:
1 2 3 4 5 | SELECT ln(2.0); ln ------------------- .6931471805599453 (1 row) |
log(double precision or numeric)
Description: Logarithm with 10 as the base
- In the ORA- or TD-compatible mode, this operator means the logarithm with 10 as the base.
- In the MySQL-compatible mode, this operator means the natural logarithm.
Return type: same as the input
Example:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | -- ORA-compatible mode SELECT log(100.0); log -------------------- 2.0000000000000000 (1 row) -- TD-compatible mode SELECT log(100.0); log -------------------- 2.0000000000000000 (1 row) -- MySQL-compatible mode SELECT log(100.0); log -------------------- 4.6051701859880914 (1 row) |
log(b numeric, x numeric)
Description: Logarithm with b as the base
Return type: numeric
Example:
1 2 3 4 5 | SELECT log(2.0, 64.0); log -------------------- 6.0000000000000000 (1 row) |
mod(x,y)
Description: Remainder of x/y (modulus) If x equals to 0, 0 is returned. If y is 0, x is returned.
Return type: same as the parameter type
Example:
1 2 3 4 5 | SELECT mod(9,4); mod ----- 1 (1 row) |
1 2 3 4 5 | SELECT mod(9,0); mod ----- 9 (1 row) |
pi()
Description: π constant value
Return type: double precision
Example:
1 2 3 4 5 | SELECT pi(); pi ------------------ 3.14159265358979 (1 row) |
power(a double precision, b double precision)
Description: b power of a
Return type: double precision
Example:
1 2 3 4 5 | SELECT power(9.0, 3.0); power ---------------------- 729.0000000000000000 (1 row) |
round(double precision or numeric)
Description: Integer closest to the input parameter
Return type: same as the input
Example:
1 2 3 4 5 6 7 8 9 10 11 | SELECT round(42.4); round ------- 42 (1 row) SELECT round(42.6); round ------- 43 (1 row) |
When the round function is invoked, the numeric type is rounded to zero. While on most computers, the real number and the double-precision number are rounded to the nearest even number.
round(v numeric, s int)
Description: s digits are kept after the decimal point.
Return type: numeric
Example:
1 2 3 4 5 | SELECT round(42.4382, 2); round ------- 42.44 (1 row) |
setseed(double precision)
Description: Sets seed for the following random() invoking (between -1.0 and 1.0, inclusive).
Return type: void
Example:
1 2 3 4 5 | SELECT setseed(0.54823); setseed --------- (1 row) |
sign(double precision or numeric)
Description: returns symbols of this parameter.
The return value type:-1 indicates negative. 0 indicates 0, and 1 indicates a positive number.
Example:
1 2 3 4 5 | SELECT sign(-8.4); sign ------ -1 (1 row) |
sin(x)
Description: Sine
Return type: double precision
Example:
1 2 3 4 5 | SELECT sin(1.57079); sin ------------------ .999999999979986 (1 row) |
sqrt(x)
Description: Square root
Return type: same as the input
Example:
1 2 3 4 5 | SELECT sqrt(2.0); sqrt ------------------- 1.414213562373095 (1 row) |
tan(x)
Description: Tangent
Return type: double precision
Example:
1 2 3 4 5 | SELECT tan(20); tan ------------------ 2.23716094422474 (1 row) |
trunc(double precision or numeric)
Description: truncates (the integral part).
Return type: same as the input
Example:
1 2 3 4 5 | SELECT trunc(42.8); trunc ------- 42 (1 row) |
trunc(v numeric, s int)
Description: Truncates a number with s digits after the decimal point.
Return type: numeric
Example:
1 2 3 4 5 | SELECT trunc(42.4382, 2); trunc ------- 42.43 (1 row) |
width_bucket(operand numeric, b1 numeric, b2 numeric, count int)
Description: Sets the minimum value, maximum value, and number of groups in a group range, constructs a specified number of groups with the same size, and returns the ID of the group to which a specified field value belongs. b1 is the minimum value of the group range, b2 is the maximum value of the group range, and count is the number of groups.
Return type: integer
Example:
1 2 3 4 5 | SELECT width_bucket(5.35, 0.024, 10.06, 5); width_bucket -------------- 3 (1 row) |
width_bucket(op double precision, b1 double precision, b2 double precision, count int)
Description: Sets the minimum value, maximum value, and number of groups in a group range, constructs a specified number of groups with the same size, and returns the ID of the group to which a specified field value belongs. b1 is the minimum value of the group range, b2 is the maximum value of the group range, and count is the number of groups.
Return type: integer
Example:
1 2 3 4 5 | SELECT width_bucket(5.35, 0.024, 10.06, 5); width_bucket -------------- 3 (1 row) |