add support for subqueries in scalar expressions
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4 changed files with 53 additions and 13 deletions
Language/SQL/SimpleSQL
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@ -2,6 +2,7 @@
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> module Language.SQL.SimpleSQL.Syntax
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> (ScalarExpr(..)
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> ,TypeName(..)
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> ,SubQueryExprType(..)
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> ,QueryExpr(..)
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> ,makeSelect
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> ,Duplicates(..)
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@ -26,10 +27,14 @@
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> | Parens ScalarExpr
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> | Cast ScalarExpr TypeName
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> | CastOp TypeName String
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> | SubQueryExpr SubQueryExprType QueryExpr
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> deriving (Eq,Show)
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> data TypeName = TypeName String deriving (Eq,Show)
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> data SubQueryExprType = SqExists | SqIn | SqSq | SqAll | SqSome | SqAny
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> deriving (Eq,Show)
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> data QueryExpr
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> = Select
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> {qeDuplicates :: Duplicates
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