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Add support for INTERVAL operator.

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This commit is contained in:
zer0sub 2019-05-06 14:01:50 +02:00
parent 4f9323ddca
commit dd9b815dbb
4 changed files with 57 additions and 27 deletions
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22
sqlbuilder/time_expression.go
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@ -48,3 +48,25 @@ func (t *timeInterfaceImpl) LtEq(expression TimeExpression) BoolExpression {
func (t *timeInterfaceImpl) LtEqL(literal string) BoolExpression {
return LtEq(t.parent, Literal(literal))
}
//---------------------------------------------------//
type prefixTimeExpression struct {
expressionInterfaceImpl
timeInterfaceImpl
prefixExpression
}
func newPrefixTimeExpression(expression Expression, operator string) TimeExpression {
timeExpr := prefixTimeExpression{}
timeExpr.prefixExpression = newPrefixExpression(expression, operator)
timeExpr.expressionInterfaceImpl.parent = &timeExpr
timeExpr.timeInterfaceImpl.parent = &timeExpr
return &timeExpr
}
func INTERVAL(interval string) Expression {
return newPrefixTimeExpression(Literal(interval), "INTERVAL")
}