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New MIN/MAX functions that accepts any expression type.

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go-jet 2019-09-30 14:42:04 +02:00
parent 4b86e8f0ca
commit e09c78dec3
6 changed files with 46 additions and 0 deletions
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10
internal/jet/func_expression.go
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@ -115,6 +115,11 @@ func EVERY(boolExpression BoolExpression) boolWindowExpression {
return newBoolWindowFunc("EVERY", boolExpression)
}
// MAX is aggregate function. Returns minimum value of expression across all input values.
func MAX(expression Expression) Expression {
return newWindowFunc("MAX", expression)
}
// MAXf is aggregate function. Returns maximum value of float expression across all input values
func MAXf(floatExpression FloatExpression) floatWindowExpression {
return NewFloatWindowFunc("MAX", floatExpression)
@ -125,6 +130,11 @@ func MAXi(integerExpression IntegerExpression) integerWindowExpression {
return newIntegerWindowFunc("MAX", integerExpression)
}
// MIN is aggregate function. Returns minimum value of expression across all input values.
func MIN(expression Expression) Expression {
return newWindowFunc("MIN", expression)
}
// MINf is aggregate function. Returns minimum value of float expression across all input values
func MINf(floatExpression FloatExpression) floatWindowExpression {
return NewFloatWindowFunc("MIN", floatExpression)

16
internal/jet/func_expression_test.go
View file

@ -30,6 +30,14 @@ func TestFuncEVERY(t *testing.T) {
}
func TestFuncMIN(t *testing.T) {
t.Run("expression", func(t *testing.T) {
assertClauseSerialize(t, MIN(table1ColDate), "MIN(table1.col_date)")
assertClauseSerialize(t, MIN(Date(2001, 1, 1)), "MIN($1)", "2001-01-01")
assertClauseSerialize(t, MIN(Time(12, 10, 10)), "MIN($1)", "12:10:10")
assertClauseSerialize(t, MIN(Timestamp(2001, 1, 1, 12, 10, 10)), "MIN($1)", "2001-01-01 12:10:10")
assertClauseSerialize(t, MIN(Timestampz(2001, 1, 1, 12, 10, 10, 1, "UTC")), "MIN($1)", "2001-01-01 12:10:10.000000001 UTC")
})
t.Run("float", func(t *testing.T) {
assertClauseSerialize(t, MINf(table1ColFloat), "MIN(table1.col_float)")
})
@ -40,6 +48,14 @@ func TestFuncMIN(t *testing.T) {
}
func TestFuncMAX(t *testing.T) {
t.Run("expression", func(t *testing.T) {
assertClauseSerialize(t, MAX(table1ColDate), "MAX(table1.col_date)")
assertClauseSerialize(t, MAX(Date(2001, 1, 1)), "MAX($1)", "2001-01-01")
assertClauseSerialize(t, MAX(Time(12, 10, 10)), "MAX($1)", "12:10:10")
assertClauseSerialize(t, MAX(Timestamp(2001, 1, 1, 12, 10, 10)), "MAX($1)", "2001-01-01 12:10:10")
assertClauseSerialize(t, MAX(Timestampz(2001, 1, 1, 12, 10, 10, 1, "UTC")), "MAX($1)", "2001-01-01 12:10:10.000000001 UTC")
})
t.Run("float", func(t *testing.T) {
assertClauseSerialize(t, MAXf(table1ColFloat), "MAX(table1.col_float)")
assertClauseSerialize(t, MAXf(Float(11.2222)), "MAX($1)", float64(11.2222))