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Conditional expression functions.

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This commit is contained in:
zer0sub 2019-06-03 17:38:47 +02:00
parent ca5a30983e
commit dca028295d
7 changed files with 89 additions and 15 deletions
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24
sqlbuilder/func_expression.go
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@ -503,3 +503,27 @@ func LOCALTIMESTAMP(precision ...int) TimestampExpression {
func NOW() TimestampzExpression {
return newTimestampzFunc("NOW")
}
// --------------- Conditional Expressions Functions -------------//
func COALESCE(value expression, values ...expression) expression {
var allValues = []expression{value}
allValues = append(allValues, values...)
return newFunc("COALESCE", allValues, nil)
}
func NULLIF(value1, value2 expression) expression {
return newFunc("NULLIF", []expression{value1, value2}, nil)
}
func GREATEST(value expression, values ...expression) expression {
var allValues = []expression{value}
allValues = append(allValues, values...)
return newFunc("GREATEST", allValues, nil)
}
func LEAST(value expression, values ...expression) expression {
var allValues = []expression{value}
allValues = append(allValues, values...)
return newFunc("LEAST", allValues, nil)
}