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MySQL float expressions.

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This commit is contained in:
go-jet 2019-07-30 15:04:36 +02:00
parent 6bf9c32c07
commit 163ecf4c42
13 changed files with 401 additions and 85 deletions
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40
func_expression.go
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@ -11,7 +11,7 @@ func ROW(expressions ...Expression) Expression {
// ABSf calculates absolute value from float expression
func ABSf(floatExpression FloatExpression) FloatExpression {
return newFloatFunc("ABS", floatExpression)
return NewFloatFunc("ABS", floatExpression)
}
// ABSi calculates absolute value from int expression
@ -19,62 +19,66 @@ func ABSi(integerExpression IntegerExpression) IntegerExpression {
return newIntegerFunc("ABS", integerExpression)
}
func POWER(base, exponent NumericExpression) FloatExpression {
return NewFloatFunc("POWER", base, exponent)
}
// SQRT calculates square root of numeric expression
func SQRT(numericExpression NumericExpression) FloatExpression {
return newFloatFunc("SQRT", numericExpression)
return NewFloatFunc("SQRT", numericExpression)
}
// CBRT calculates cube root of numeric expression
func CBRT(numericExpression NumericExpression) FloatExpression {
return newFloatFunc("CBRT", numericExpression)
return NewFloatFunc("CBRT", numericExpression)
}
// CEIL calculates ceil of float expression
func CEIL(floatExpression FloatExpression) FloatExpression {
return newFloatFunc("CEIL", floatExpression)
return NewFloatFunc("CEIL", floatExpression)
}
// FLOOR calculates floor of float expression
func FLOOR(floatExpression FloatExpression) FloatExpression {
return newFloatFunc("FLOOR", floatExpression)
return NewFloatFunc("FLOOR", floatExpression)
}
// ROUND calculates round of a float expressions with optional precision
func ROUND(floatExpression FloatExpression, precision ...IntegerExpression) FloatExpression {
if len(precision) > 0 {
return newFloatFunc("ROUND", floatExpression, precision[0])
return NewFloatFunc("ROUND", floatExpression, precision[0])
}
return newFloatFunc("ROUND", floatExpression)
return NewFloatFunc("ROUND", floatExpression)
}
// SIGN returns sign of float expression
func SIGN(floatExpression FloatExpression) FloatExpression {
return newFloatFunc("SIGN", floatExpression)
return NewFloatFunc("SIGN", floatExpression)
}
// TRUNC calculates trunc of float expression with optional precision
func TRUNC(floatExpression FloatExpression, precision ...IntegerExpression) FloatExpression {
if len(precision) > 0 {
return newFloatFunc("TRUNC", floatExpression, precision[0])
return NewFloatFunc("TRUNC", floatExpression, precision[0])
}
return newFloatFunc("TRUNC", floatExpression)
return NewFloatFunc("TRUNC", floatExpression)
}
// LN calculates natural algorithm of float expression
func LN(floatExpression FloatExpression) FloatExpression {
return newFloatFunc("LN", floatExpression)
return NewFloatFunc("LN", floatExpression)
}
// LOG calculates logarithm of float expression
func LOG(floatExpression FloatExpression) FloatExpression {
return newFloatFunc("LOG", floatExpression)
return NewFloatFunc("LOG", floatExpression)
}
// ----------------- Aggregate functions -------------------//
// AVG is aggregate function used to calculate avg value from numeric expression
func AVG(numericExpression NumericExpression) FloatExpression {
return newFloatFunc("AVG", numericExpression)
return NewFloatFunc("AVG", numericExpression)
}
// BIT_AND is aggregate function used to calculates the bitwise AND of all non-null input values, or null if none.
@ -109,7 +113,7 @@ func EVERY(boolExpression BoolExpression) BoolExpression {
// MAXf is aggregate function. Returns maximum value of float expression across all input values
func MAXf(floatExpression FloatExpression) FloatExpression {
return newFloatFunc("MAX", floatExpression)
return NewFloatFunc("MAX", floatExpression)
}
// MAXi is aggregate function. Returns maximum value of int expression across all input values
@ -119,7 +123,7 @@ func MAXi(integerExpression IntegerExpression) IntegerExpression {
// MINf is aggregate function. Returns minimum value of float expression across all input values
func MINf(floatExpression FloatExpression) FloatExpression {
return newFloatFunc("MIN", floatExpression)
return NewFloatFunc("MIN", floatExpression)
}
// MINi is aggregate function. Returns minimum value of int expression across all input values
@ -129,7 +133,7 @@ func MINi(integerExpression IntegerExpression) IntegerExpression {
// SUMf is aggregate function. Returns sum of expression across all float expressions
func SUMf(floatExpression FloatExpression) FloatExpression {
return newFloatFunc("SUM", floatExpression)
return NewFloatFunc("SUM", floatExpression)
}
// SUMi is aggregate function. Returns sum of expression across all integer expression.
@ -350,7 +354,7 @@ func TO_DATE(dateStr, format StringExpression) DateExpression {
// TO_NUMBER converts string to numeric using format
func TO_NUMBER(floatStr, format StringExpression) FloatExpression {
return newFloatFunc("TO_NUMBER", floatStr, format)
return NewFloatFunc("TO_NUMBER", floatStr, format)
}
// TO_TIMESTAMP converts string to time stamp with time zone using format
@ -537,7 +541,7 @@ type floatFunc struct {
floatInterfaceImpl
}
func newFloatFunc(name string, expressions ...Expression) FloatExpression {
func NewFloatFunc(name string, expressions ...Expression) FloatExpression {
floatFunc := &floatFunc{}
floatFunc.funcExpressionImpl = *newFunc(name, expressions, floatFunc)