addition |
The addition operator (+) .
SELECT NortheastSales + SoutheastSales AS EastTotalSales
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subtraction |
The subtraction operator (-) .
SELECT SalesRevenue - TotalCosts AS Profit
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multiplication |
The multiplication operator (*) .
SELECT Price * 0.7 AS SalePrice
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division |
The division operator (/) .
SELECT YearTotal / 4 AS QuarterAvg
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ABS |
Returns the absolute value of n .
If n is 0 or a positive integer, returns n . Otherwise, n is multiplied by -1.
RESULT: one = 1
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CEIL |
Returns the smallest integer value not less than n .
SELECT CEIL(123.45) AS x, CEIL(32) AS y, CEIL(-123.45) AS z
RESULT: x = 124, y = 32, z = -123
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EXP |
Exponentiation, where the base is e .
Returns the value of e (the base of natural logarithms) raised to the power n .
RESULT: baseE = e^1.0 = 2.71828182845905
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FLOOR |
Returns the largest integer value not greater than n .
SELECT FLOOR(123.45) AS x, FLOOR(32) AS y, FLOOR(-123.45) AS z
RESULT: x = 123, y = 32, z = -124
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LN |
Natural logarithm. Computes the logarithm of its single argument, the base of which is e .
RESULT: baseE = e^1.0 = 0
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LOG |
Logarithm. log(n, m) takes two arguments, where n is the base, and m is the value you are taking the logarithm of.
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MOD |
Modulo. Returns the remainder of n divided by m .
EQL uses the fmod floating point remainder, as defined in the C/POSIX standard.
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ROUND |
Returns a number rounded to the specified decimal place.
The unary (one argument) version takes only one argument (the number to be rounded) and drops the decimal (non-integral) portion of the input. For example:
ROUND(8.2) returns 8
ROUND(8.7) returns 9
The binary (two argument) version takes two arguments (the number to be rounded and a positive or negative integer that allows you to set the number of spaces at which the number is rounded). The binary version always returns a double:
- Positive second arguments correspond to the number of places that must be returned after the decimal point. For example:
ROUND(123.4567, 3) returns 123.457
- Negative second arguments correspond to the number of places that must be returned before the decimal point. For example:
ROUND(123.4, -3) returns 0
ROUND(1234.56, -3) returns 1000
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SIGN |
Returns the sign of the argument as -1, 0, or 1, depending on whether n is negative, zero, or positive. The result is always a double.
SELECT SIGN(-12) AS x, SIGN(0) AS y, SIGN(12) AS z
RESULT: x = -1, y = 0, z = 1
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SQRT |
Returns the nonnegative square root of n as an mdex:double type.
RESULT: x = 3
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TRUNC |
Returns the number n truncated to m decimal places. If m is 0, the result has no decimal point or fractional part.
The unary (one argument) version drops the decimal (non-integral) portion of the input. For example:
SELECT TRUNC(3.14159265) AS x
RESULT: x = 3
The binary (two argument) version allows you to set the number of spaces at which the number is truncated. The binary version always returns a double. For example:
SELECT TRUNC(3.14159265, 3) AS y
RESULT: y = 3.141
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SIN |
The sine of n , where the angle of n is in radians.
SIN(3.14159/6) = 0.499999616987256
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COS |
The cosine of n , where the angle of n is in radians.
COS(3.14159/3) = 0.500000766025195
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TAN |
The tangent of n , where the angle of n is in radians.
TAN(3.14159/4) = 0.999998673205984
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POWER |
Returns the value (as a double) of n raised to the power of m .
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TO_DURATION |
Casts a string representation of a timestamp into a number of milliseconds so that it can be used as a duration. |
TO_DOUBLE |
Casts a string representation of an integer as a double. |
TO_INTEGER(boolean) |
Casts TRUE/FALSE to 1/0 . |