graphql-engine-1.0.0: GraphQL API over Postgres
Safe HaskellNone
LanguageHaskell2010

Hasura.Backends.Postgres.Translate.Select.Internal.Extractor

Description

Extractors are a pair of an SQL expression and an alias; they get translated like "[SELECT ...] expr as alias"

Documentation

aggregateFieldsToExtractorExps :: Identifier -> AggregateFields ('Postgres pgKind) -> [(ColumnAlias, SQLExp)] Source #

mkAggregateOrderByExtractorAndFields :: forall pgKind. Backend ('Postgres pgKind) => AnnotatedAggregateOrderBy ('Postgres pgKind) -> (Extractor, AggregateFields ('Postgres pgKind)) Source #

withJsonAggExtr :: PermissionLimitSubQuery -> Maybe OrderByExp -> ColumnAlias -> SQLExp Source #

asSingleRowExtr :: ColumnAlias -> SQLExp Source #

asJsonAggExtr :: JsonAggSelect -> ColumnAlias -> PermissionLimitSubQuery -> Maybe OrderByExp -> Extractor Source #