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MySQL cast expressions. Simplified.

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This commit is contained in:
go-jet 2019-08-01 10:39:57 +02:00
parent 53dbcd9bfc
commit c342f296ca
10 changed files with 103 additions and 81 deletions
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29
mysql/mysql_cast.go
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@ -5,51 +5,38 @@ import (
)
type cast interface {
AS_DATE() DateExpression
AS_TIME() TimeExpression
jet.Cast
AS_DATETIME() DateTimeExpression
AS_CHAR() StringExpression
AS_SIGNED() IntegerExpression
AS_UNSIGNED() IntegerExpression
AS_BINARY() StringExpression
}
type castImpl struct {
jet.Cast
jet.CastImpl
}
func CAST(expr jet.Expression) cast {
castImpl := &castImpl{}
castImpl.Cast = jet.NewCastImpl(expr)
castImpl.CastImpl = jet.NewCastImpl(expr)
return castImpl
}
func (c *castImpl) AS_DATE() DateExpression {
return jet.DateExp(c.As("DATE"))
}
func (c *castImpl) AS_DATETIME() DateTimeExpression {
return jet.TimestampExp(c.As("DATETIME"))
}
func (c *castImpl) AS_TIME() TimeExpression {
return jet.TimeExp(c.As("TIME"))
}
func (c *castImpl) AS_CHAR() StringExpression {
return jet.StringExp(c.As("CHAR"))
return jet.TimestampExp(c.AS("DATETIME"))
}
func (c *castImpl) AS_SIGNED() IntegerExpression {
return jet.IntExp(c.As("SIGNED"))
return jet.IntExp(c.AS("SIGNED"))
}
func (c *castImpl) AS_UNSIGNED() IntegerExpression {
return jet.IntExp(c.As("UNSIGNED"))
return jet.IntExp(c.AS("UNSIGNED"))
}
func (c *castImpl) AS_BINARY() StringExpression {
return jet.StringExp(c.As("BINARY"))
return jet.StringExp(c.AS("BINARY"))
}