Changes fact populatation generator to use hssqlppp internally.
parent
d33dcbe33c
commit
46e5e43856
|
|
@ -47,8 +47,8 @@ tableDefnStmts Table {..} = do
|
|||
|
||||
tableDefnSQL :: Table -> (Table -> Reader Env [Statement]) -> Reader Env [Text]
|
||||
tableDefnSQL table indexFn = do
|
||||
ds <- map ppSQL <$> tableDefnStmts table
|
||||
is <- map (\st -> ppSQL st <> ";\n") <$> indexFn table
|
||||
ds <- map ppStatement <$> tableDefnStmts table
|
||||
is <- map (\st -> ppStatement st <> ";\n") <$> indexFn table
|
||||
return $ ds ++ is
|
||||
|
||||
dimensionTableDefnSQL :: Table -> Reader Env [Text]
|
||||
|
|
|
|||
|
|
@ -14,23 +14,14 @@ import Ringo.Extractor.Internal
|
|||
import Ringo.Generator.Sql
|
||||
import Ringo.Types
|
||||
|
||||
joinColumnNames :: [ColumnName] -> Text
|
||||
joinColumnNames = Text.intercalate ",\n"
|
||||
|
||||
fullColumnName :: TableName -> ColumnName -> ColumnName
|
||||
fullColumnName tName cName = tName <> "." <> cName
|
||||
|
||||
dimColumnMapping :: Text -> Fact -> TableName -> [(ColumnName, ColumnName)]
|
||||
dimColumnMapping dimPrefix fact dimTableName =
|
||||
[ (dimColumnName dName cName, cName)
|
||||
| DimVal dName cName <- factColumns fact
|
||||
, dimPrefix <> dName == dimTableName ]
|
||||
|
||||
coalesceColumn :: TypeDefaults -> TableName -> Column -> Text
|
||||
coalesceColumn defaults tName = ppScalarExpr . coalesceColumn' defaults tName
|
||||
|
||||
coalesceColumn' :: TypeDefaults -> TableName -> Column -> ScalarExpr
|
||||
coalesceColumn' defaults tName Column{..} =
|
||||
coalesceColumn :: TypeDefaults -> TableName -> Column -> ScalarExpr
|
||||
coalesceColumn defaults tName Column{..} =
|
||||
if columnNullable == Null
|
||||
then app "coalesce" [fqColName, num $ defVal columnType]
|
||||
else fqColName
|
||||
|
|
|
|||
|
|
@ -20,16 +20,16 @@ import Ringo.Types
|
|||
|
||||
dimensionTablePopulateSQL :: TablePopulationMode -> Fact -> TableName -> Reader Env Text
|
||||
dimensionTablePopulateSQL popMode fact dimTableName =
|
||||
ppSQL <$> dimensionTablePopulateSQL' popMode fact dimTableName
|
||||
ppStatement <$> dimensionTablePopulateStmt popMode fact dimTableName
|
||||
|
||||
dimensionTablePopulateSQL' :: TablePopulationMode -> Fact -> TableName -> Reader Env Statement
|
||||
dimensionTablePopulateSQL' popMode fact dimTableName = do
|
||||
dimensionTablePopulateStmt :: TablePopulationMode -> Fact -> TableName -> Reader Env Statement
|
||||
dimensionTablePopulateStmt popMode fact dimTableName = do
|
||||
Settings {..} <- asks envSettings
|
||||
tables <- asks envTables
|
||||
defaults <- asks envTypeDefaults
|
||||
let factTable = fromJust $ findTable (factTableName fact) tables
|
||||
colMapping = dimColumnMapping settingDimPrefix fact dimTableName
|
||||
selectCols = [ flip sia (nmc cName) $ coalesceColumn' defaults (factTableName fact) col
|
||||
selectCols = [ flip sia (nmc cName) $ coalesceColumn defaults (factTableName fact) col
|
||||
| (_, cName) <- colMapping
|
||||
, let col = fromJust . findColumn cName $ tableColumns factTable ]
|
||||
timeCol = head [ cName | DimTime cName <- factColumns fact ]
|
||||
|
|
|
|||
|
|
@ -14,14 +14,17 @@ import Control.Applicative ((<$>))
|
|||
#endif
|
||||
|
||||
import Control.Monad.Reader (Reader, asks)
|
||||
import Database.HsSqlPpp.Syntax ( QueryExpr(..), Statement, makeSelect
|
||||
, SelectList(..), SelectItem(..), JoinType(..) )
|
||||
import Data.List (nub)
|
||||
import Data.Maybe (fromJust, fromMaybe, mapMaybe, listToMaybe)
|
||||
import Data.Maybe (fromJust, fromMaybe, listToMaybe)
|
||||
import Data.Monoid ((<>))
|
||||
import Data.Text (Text)
|
||||
import Text.RawString.QQ (r)
|
||||
|
||||
import Ringo.Extractor.Internal
|
||||
import Ringo.Generator.Internal
|
||||
import Ringo.Generator.Sql
|
||||
import Ringo.Types
|
||||
import Ringo.Utils
|
||||
|
||||
|
|
@ -48,18 +51,12 @@ BEGIN
|
|||
RETURN r;
|
||||
END;
|
||||
$$
|
||||
LANGUAGE 'plpgsql' IMMUTABLE|]
|
||||
LANGUAGE 'plpgsql' IMMUTABLE;
|
||||
|]
|
||||
|
||||
data FactTablePopulateSelectSQL = FactTablePopulateSelectSQL
|
||||
{ ftpsSelectCols :: ![(Text, Text)]
|
||||
, ftpsSelectTable :: !Text
|
||||
, ftpsJoinClauses :: ![Text]
|
||||
, ftpsWhereClauses :: ![Text]
|
||||
, ftpsGroupByCols :: ![Text]
|
||||
} deriving (Show, Eq)
|
||||
|
||||
factTableUpdateSQL :: TablePopulationMode -> Fact -> Text -> FactTablePopulateSelectSQL -> Reader Env [Text]
|
||||
factTableUpdateSQL popMode fact groupByColPrefix populateSelectSQL@FactTablePopulateSelectSQL {..} = do
|
||||
factCountDistinctUpdateStmts :: TablePopulationMode -> Fact -> Text -> QueryExpr -> Reader Env [Statement]
|
||||
factCountDistinctUpdateStmts
|
||||
popMode fact groupByColPrefix ~Select {selSelectList = SelectList _ origSelectItems, ..} = do
|
||||
Settings {..} <- asks envSettings
|
||||
tables <- asks envTables
|
||||
let countDistinctCols = [ col | col@(FactCountDistinct _ _) <- factColumns fact]
|
||||
|
|
@ -70,50 +67,57 @@ factTableUpdateSQL popMode fact groupByColPrefix populateSelectSQL@FactTablePopu
|
|||
suffixTableName popMode settingTableNameSuffixTemplate
|
||||
$ extractedFactTableName settingFactPrefix settingFactInfix (factName fact) settingTimeUnit
|
||||
|
||||
return . (\xs -> if null xs then xs else ilog2FunctionString : xs)
|
||||
$ for countDistinctCols $ \(FactCountDistinct scName cName) ->
|
||||
let unqCol = fullColumnName fTableName (fromMaybe tablePKColName scName) <> "::text"
|
||||
return $ for countDistinctCols $ \(FactCountDistinct scName cName) ->
|
||||
let unqCol = cast (eqi fTableName (fromMaybe tablePKColName scName)) "text"
|
||||
|
||||
bucketSelectCols =
|
||||
[ ( "hashtext(" <> unqCol <> ") & "
|
||||
<> Text.pack (show $ bucketCount settingFactCountDistinctErrorRate - 1)
|
||||
, cName <> "_bnum"
|
||||
)
|
||||
, ( "31 - ilog2(min(hashtext(" <> unqCol <> ") & ~(1 << 31)))"
|
||||
, cName <> "_bhash"
|
||||
)
|
||||
[ sia (binop "&" (app "hashtext" [ unqCol ])
|
||||
(num . Text.pack . show $ bucketCount settingFactCountDistinctErrorRate - 1))
|
||||
(nmc $ cName <> "_bnum")
|
||||
, sia (binop "-"
|
||||
(num "31")
|
||||
(app "ilog2"
|
||||
[ app "min" [ binop "&"
|
||||
(app "hashtext" [ unqCol ])
|
||||
(prefop "~" (parens (binop "<<" (num "1") (num "31"))))]]))
|
||||
(nmc $ cName <> "_bhash")
|
||||
]
|
||||
|
||||
selectSQL = toSelectSQL $
|
||||
populateSelectSQL
|
||||
{ ftpsSelectCols = filter ((`elem` ftpsGroupByCols) . snd) ftpsSelectCols ++ bucketSelectCols
|
||||
, ftpsGroupByCols = ftpsGroupByCols ++ [ cName <> "_bnum" ]
|
||||
, ftpsWhereClauses = ftpsWhereClauses ++ [ unqCol <> " IS NOT NULL" ]
|
||||
groupByCols = map ppScalarExpr selGroupBy
|
||||
selectList =
|
||||
[ i | i@(SelectItem _ _ a) <- origSelectItems , a `elem` map nmc groupByCols ]
|
||||
|
||||
selectStmt =
|
||||
makeSelect
|
||||
{ selSelectList = sl $ selectList ++ bucketSelectCols
|
||||
, selTref = selTref
|
||||
, selWhere = binop "and" (postop "isnotnull" unqCol) <$> selWhere
|
||||
, selGroupBy = selGroupBy ++ [ ei $ cName <> "_bnum" ]
|
||||
}
|
||||
|
||||
aggSelectClause =
|
||||
"json_object_agg(" <> cName <> "_bnum, " <> cName <> "_bhash) AS " <> cName
|
||||
sia (app "json_object_agg" [ ei (cName <> "_bnum"), ei (cName <> "_bhash") ]) (nmc cName)
|
||||
|
||||
in "UPDATE " <> extFactTableName
|
||||
<> "\nSET " <> cName <> " = " <> fullColumnName "xyz" cName
|
||||
<> "\nFROM ("
|
||||
<> "\nSELECT " <> joinColumnNames (ftpsGroupByCols ++ [aggSelectClause])
|
||||
<> "\nFROM (\n" <> selectSQL <> "\n) zyx"
|
||||
<> "\nGROUP BY \n" <> joinColumnNames ftpsGroupByCols
|
||||
<> "\n) xyz"
|
||||
<> "\n WHERE\n"
|
||||
<> Text.intercalate "\nAND "
|
||||
[ fullColumnName extFactTableName .fromJust . Text.stripPrefix groupByColPrefix $ col
|
||||
<> " = " <> fullColumnName "xyz" col
|
||||
| col <- ftpsGroupByCols ]
|
||||
in update extFactTableName
|
||||
[ (cName, eqi "xyz" cName) ]
|
||||
[ subtrefa "xyz"
|
||||
makeSelect
|
||||
{ selSelectList = sl $ map (si . ei) groupByCols ++ [ aggSelectClause ]
|
||||
, selTref = [ subtrefa "zyx" selectStmt ]
|
||||
, selGroupBy = selGroupBy
|
||||
} ] $
|
||||
foldBinop "and"
|
||||
[ binop "=" (eqi extFactTableName . fromJust . Text.stripPrefix groupByColPrefix $ col)
|
||||
(eqi "xyz" col)
|
||||
| col <- groupByCols ]
|
||||
where
|
||||
bucketCount :: Double -> Integer
|
||||
bucketCount errorRate =
|
||||
let power :: Double = fromIntegral (ceiling . logBase 2 $ (1.04 / errorRate) ** 2 :: Integer)
|
||||
in ceiling $ 2 ** power
|
||||
|
||||
factTablePopulateSQL :: TablePopulationMode -> Fact -> Reader Env [Text]
|
||||
factTablePopulateSQL popMode fact = do
|
||||
factTablePopulateStmts :: TablePopulationMode -> Fact -> Reader Env [Statement]
|
||||
factTablePopulateStmts popMode fact = do
|
||||
Settings {..} <- asks envSettings
|
||||
allDims <- extractAllDimensionTables fact
|
||||
tables <- asks envTables
|
||||
|
|
@ -122,45 +126,37 @@ factTablePopulateSQL popMode fact = do
|
|||
fTable = fromJust . findTable fTableName $ tables
|
||||
dimIdColName = settingDimTableIdColumnName
|
||||
|
||||
coalesceFKId col =
|
||||
if "coalesce" `Text.isPrefixOf` col
|
||||
then col
|
||||
else "coalesce((" <> col <> "), " <> Text.pack (show settingForeignKeyIdCoalesceValue) <> ")"
|
||||
coalesceFKId ex =
|
||||
app "coalesce" [ ex, num . Text.pack . show $ settingForeignKeyIdCoalesceValue ]
|
||||
|
||||
timeUnitColumnInsertSQL cName =
|
||||
let colName = timeUnitColumnName dimIdColName cName settingTimeUnit
|
||||
in ( colName
|
||||
, "floor(extract(epoch from " <> fullColumnName fTableName cName <> ")/"
|
||||
<> Text.pack (show $ timeUnitToSeconds settingTimeUnit) <> ")::bigint"
|
||||
, cast (app "floor" [ binop "/" (extEpoch (eqi fTableName cName))
|
||||
(num . Text.pack . show . timeUnitToSeconds $ settingTimeUnit) ])
|
||||
"bigint"
|
||||
, True
|
||||
)
|
||||
dimIdColumnInsertSQL cName =
|
||||
let sCol = fromJust . findColumn cName $ tableColumns fTable
|
||||
in (cName, coalesceColumn defaults fTableName sCol, True)
|
||||
|
||||
app' f cName = app f [ eqi fTableName cName ]
|
||||
|
||||
factColMap = concatFor (factColumns fact) $ \col -> case col of
|
||||
DimTime cName -> [ timeUnitColumnInsertSQL cName ]
|
||||
NoDimId cName -> [ dimIdColumnInsertSQL cName ]
|
||||
TenantId cName -> [ dimIdColumnInsertSQL cName ]
|
||||
FactCount scName cName ->
|
||||
[ (cName, "count(" <> maybe "*" (fullColumnName fTableName) scName <> ")", False) ]
|
||||
FactSum scName cName ->
|
||||
[ (cName, "sum(" <> fullColumnName fTableName scName <> ")", False) ]
|
||||
FactMax scName cName ->
|
||||
[ (cName, "max(" <> fullColumnName fTableName scName <> ")", False) ]
|
||||
FactMin scName cName ->
|
||||
[ (cName, "min(" <> fullColumnName fTableName scName <> ")", False) ]
|
||||
[ (cName, app "count" [ maybe star (eqi fTableName) scName ], False) ]
|
||||
FactSum scName cName -> [ (cName, app' "sum" scName, False) ]
|
||||
FactMax scName cName -> [ (cName, app' "max" scName, False) ]
|
||||
FactMin scName cName -> [ (cName, app' "min" scName, False) ]
|
||||
FactAverage scName cName ->
|
||||
[ ( cName <> settingAvgCountColumSuffix
|
||||
, "count(" <> fullColumnName fTableName scName <> ")"
|
||||
, False
|
||||
)
|
||||
, ( cName <> settingAvgSumColumnSuffix
|
||||
, "sum(" <> fullColumnName fTableName scName <> ")"
|
||||
, False
|
||||
)
|
||||
[ ( cName <> settingAvgCountColumSuffix, app' "count" scName, False )
|
||||
, ( cName <> settingAvgSumColumnSuffix , app' "sum" scName , False)
|
||||
]
|
||||
FactCountDistinct _ cName -> [ (cName, "'{}'::json", False)]
|
||||
FactCountDistinct _ cName -> [ (cName, cast (str "{}") "json", False) ]
|
||||
_ -> []
|
||||
|
||||
dimColMap = for allDims $ \(dimFact, factTable@Table {tableName}) -> let
|
||||
|
|
@ -168,70 +164,64 @@ factTablePopulateSQL popMode fact = do
|
|||
factSourceTableName = factTableName dimFact
|
||||
factSourceTable = fromJust . findTable factSourceTableName $ tables
|
||||
dimFKIdColumn = fromJust . findColumn dimFKIdColName $ tableColumns factSourceTable
|
||||
dimLookupWhereClauses =
|
||||
[ fullColumnName tableName dimColName <> " = " <> coalesceColumn defaults factSourceTableName sourceCol
|
||||
dimLookupWhereClauses = Just . foldBinop "and" $
|
||||
[ binop "=" (eqi tableName dimColName) (coalesceColumn defaults factSourceTableName sourceCol)
|
||||
| (dimColName, sourceColName) <- dimColumnMapping settingDimPrefix dimFact tableName
|
||||
, let sourceCol = fromJust . findColumn sourceColName $ tableColumns factSourceTable ]
|
||||
insertSQL = if factTable `elem` tables -- existing dimension table
|
||||
insertExpr = if factTable `elem` tables -- existing dimension table
|
||||
then (if columnNullable dimFKIdColumn == Null then coalesceFKId else id)
|
||||
$ fullColumnName factSourceTableName dimFKIdColName
|
||||
else "SELECT " <> dimIdColName <> " FROM "
|
||||
<> suffixTableName popMode settingTableNameSuffixTemplate tableName <> " " <> tableName
|
||||
<> "\nWHERE " <> Text.intercalate "\n AND " dimLookupWhereClauses
|
||||
in (dimFKIdColName, coalesceFKId insertSQL, True)
|
||||
$ eqi factSourceTableName dimFKIdColName
|
||||
else coalesceFKId . subQueryExp $
|
||||
makeSelect
|
||||
{ selSelectList = sl [ si $ ei dimIdColName ]
|
||||
, selTref =
|
||||
[ trefa (suffixTableName popMode settingTableNameSuffixTemplate tableName) tableName ]
|
||||
, selWhere = dimLookupWhereClauses
|
||||
}
|
||||
in (dimFKIdColName, insertExpr, True)
|
||||
|
||||
colMap = [ (cName, (sql, groupByColPrefix <> cName), addToGroupBy)
|
||||
| (cName, sql, addToGroupBy) <- factColMap ++ dimColMap ]
|
||||
colMap = [ (cName, (expr, nmc $ groupByColPrefix <> cName), addToGroupBy)
|
||||
| (cName, expr, addToGroupBy) <- factColMap ++ dimColMap ]
|
||||
|
||||
joinClauses =
|
||||
mapMaybe (\tName -> (\p -> "LEFT JOIN " <> tName <> "\nON "<> p) <$> joinClausePreds fTable tName)
|
||||
map (tref &&& joinClausePreds fTable)
|
||||
. filter (/= fTableName)
|
||||
. nub
|
||||
. map (factTableName . fst)
|
||||
$ allDims
|
||||
|
||||
timeCol = fullColumnName fTableName $ head [ cName | DimTime cName <- factColumns fact ]
|
||||
timeCol = eqi fTableName $ head [ cName | DimTime cName <- factColumns fact ]
|
||||
|
||||
extFactTableName = suffixTableName popMode settingTableNameSuffixTemplate
|
||||
$ extractedFactTableName settingFactPrefix settingFactInfix (factName fact) settingTimeUnit
|
||||
|
||||
populateSelectSQL =
|
||||
FactTablePopulateSelectSQL
|
||||
{ ftpsSelectCols = map snd3 colMap
|
||||
, ftpsSelectTable = fTableName
|
||||
, ftpsJoinClauses = joinClauses
|
||||
, ftpsWhereClauses =
|
||||
timeCol <> " < ?" : [ timeCol <> " >= ?" | popMode == IncrementalPopulation ]
|
||||
, ftpsGroupByCols = map ((groupByColPrefix <>) . fst3) . filter thd3 $ colMap
|
||||
populateSelectExpr =
|
||||
makeSelect
|
||||
{ selSelectList = sl . map (uncurry sia . snd3) $ colMap
|
||||
, selTref = [ foldl (\tf (t, oc) -> tjoin tf LeftOuter t oc) (tref fTableName) joinClauses ]
|
||||
, selWhere = Just . foldBinop "and" $
|
||||
binop "<" timeCol placeholder :
|
||||
[ binop ">=" timeCol placeholder | popMode == IncrementalPopulation ]
|
||||
, selGroupBy = map (ei . (groupByColPrefix <>) . fst3) . filter thd3 $ colMap
|
||||
}
|
||||
|
||||
insertIntoSQL = "INSERT INTO " <> extFactTableName
|
||||
<> " (\n" <> Text.intercalate ",\n " (map fst3 colMap) <> "\n)\n"
|
||||
<> toSelectSQL populateSelectSQL
|
||||
insertIntoStmt = insert extFactTableName (map fst3 colMap) populateSelectExpr
|
||||
|
||||
updateSQLs <- factTableUpdateSQL popMode fact groupByColPrefix populateSelectSQL
|
||||
|
||||
return $ insertIntoSQL : updateSQLs
|
||||
updateStmts <- factCountDistinctUpdateStmts popMode fact groupByColPrefix populateSelectExpr
|
||||
return $ insertIntoStmt : updateStmts
|
||||
where
|
||||
groupByColPrefix = "xxff_"
|
||||
|
||||
joinClausePreds table oTableName =
|
||||
Text.intercalate " AND "
|
||||
. map (\(c1, c2) -> fullColumnName (tableName table) c1 <> " = " <> fullColumnName oTableName c2)
|
||||
foldBinop "and"
|
||||
. map (\(c1, c2) -> binop "=" (eqi (tableName table) c1) (eqi oTableName c2))
|
||||
<$> listToMaybe [ colPairs | ForeignKey tName colPairs <- tableConstraints table
|
||||
, tName == oTableName ]
|
||||
|
||||
toSelectSQL :: FactTablePopulateSelectSQL -> Text
|
||||
toSelectSQL FactTablePopulateSelectSQL {..} =
|
||||
"SELECT \n" <> joinColumnNames (map (uncurry asName) ftpsSelectCols)
|
||||
<> "\nFROM " <> ftpsSelectTable
|
||||
<> (if not . null $ ftpsJoinClauses
|
||||
then "\n" <> Text.intercalate "\n" ftpsJoinClauses
|
||||
else "")
|
||||
<> (if not . null $ ftpsWhereClauses
|
||||
then "\nWHERE " <> Text.intercalate "\nAND " ftpsWhereClauses
|
||||
else "")
|
||||
<> "\nGROUP BY \n"
|
||||
<> joinColumnNames ftpsGroupByCols
|
||||
where
|
||||
asName sql alias = "(" <> sql <> ")" <> " as " <> alias
|
||||
|
||||
factTablePopulateSQL :: TablePopulationMode -> Fact -> Reader Env [Text]
|
||||
factTablePopulateSQL popMode fact = do
|
||||
stmts <- factTablePopulateStmts popMode fact
|
||||
return $ case stmts of
|
||||
[] -> []
|
||||
[i] -> [ ppStatement i ]
|
||||
i:us -> [ ppStatement i, ilog2FunctionString ] ++ map ppStatement us
|
||||
|
|
|
|||
|
|
@ -5,7 +5,7 @@ import qualified Data.Text as Text
|
|||
import qualified Data.Text.Lazy as TL
|
||||
|
||||
import Database.HsSqlPpp.Annotation
|
||||
import Database.HsSqlPpp.Dialect (postgresDialect)
|
||||
import Database.HsSqlPpp.Dialect
|
||||
import Database.HsSqlPpp.Pretty
|
||||
import Database.HsSqlPpp.Syntax
|
||||
import Data.Text (Text)
|
||||
|
|
@ -24,28 +24,31 @@ attDef nam typ constr =
|
|||
AttributeDef ea (nmc nam) (SimpleTypeName ea $ name typ) Nothing [constr]
|
||||
|
||||
member :: ScalarExpr -> ScalarExpr -> ScalarExpr
|
||||
member a b = BinaryOp ea (name ".") a b
|
||||
member = BinaryOp ea (name ".")
|
||||
|
||||
num :: Text -> ScalarExpr
|
||||
num n = NumberLit ea $ Text.unpack n
|
||||
num = NumberLit ea . Text.unpack
|
||||
|
||||
str :: Text -> ScalarExpr
|
||||
str = StringLit ea . Text.unpack
|
||||
|
||||
app :: Text -> [ScalarExpr] -> ScalarExpr
|
||||
app n as = App ea (name n) as
|
||||
extEpoch :: ScalarExpr -> ScalarExpr
|
||||
extEpoch = Extract ea ExtractEpoch
|
||||
|
||||
specop :: Text -> [ScalarExpr] -> ScalarExpr
|
||||
specop n as = SpecialOp ea (name n) as
|
||||
app :: Text -> [ScalarExpr] -> ScalarExpr
|
||||
app n = App ea (name n)
|
||||
|
||||
cast :: ScalarExpr -> Text -> ScalarExpr
|
||||
cast ex = Cast ea ex . SimpleTypeName ea . name
|
||||
|
||||
prefop :: Text -> ScalarExpr -> ScalarExpr
|
||||
prefop n a = PrefixOp ea (name n) a
|
||||
prefop n = PrefixOp ea (name n)
|
||||
|
||||
postop :: Text -> ScalarExpr -> ScalarExpr
|
||||
postop n a = PostfixOp ea (name n) a
|
||||
postop n = PostfixOp ea (name n)
|
||||
|
||||
binop :: Text -> ScalarExpr -> ScalarExpr -> ScalarExpr
|
||||
binop n a0 a1 = BinaryOp ea (name n) a0 a1
|
||||
binop n = BinaryOp ea (name n)
|
||||
|
||||
foldBinop :: Text -> [ScalarExpr] -> ScalarExpr
|
||||
foldBinop _ [] = error "List must be non empty"
|
||||
|
|
@ -60,9 +63,15 @@ parens = Parens ea
|
|||
qstar :: Text -> ScalarExpr
|
||||
qstar = QStar ea . nmc
|
||||
|
||||
star :: ScalarExpr
|
||||
star = Star ea
|
||||
|
||||
subQueryExp :: QueryExpr -> ScalarExpr
|
||||
subQueryExp = ScalarSubQuery ea
|
||||
|
||||
-- Table ref
|
||||
tref :: Text -> TableRef
|
||||
tref s = Tref ea (name s)
|
||||
tref = Tref ea . name
|
||||
|
||||
-- Table ref alias
|
||||
trefa :: Text -> Text -> TableRef
|
||||
|
|
@ -82,11 +91,11 @@ si = SelExp ea
|
|||
|
||||
-- Select item alias
|
||||
sia :: ScalarExpr -> NameComponent -> SelectItem
|
||||
sia e a = SelectItem ea e a
|
||||
sia = SelectItem ea
|
||||
|
||||
-- Expression qualified identifier
|
||||
eqi :: Text -> Text -> ScalarExpr
|
||||
eqi c x = Identifier ea $ qn c x
|
||||
eqi c = Identifier ea . qn c
|
||||
|
||||
-- Expression identifier
|
||||
ei :: Text -> ScalarExpr
|
||||
|
|
@ -100,15 +109,20 @@ qn c n = Name ea [nmc c, nmc n]
|
|||
sl :: [SelectItem] -> SelectList
|
||||
sl = SelectList ea
|
||||
|
||||
-- Insert statement
|
||||
insert :: Text -> [Text] -> QueryExpr -> Statement
|
||||
insert tName cNames selectExp =
|
||||
Insert ea (name tName) (map nmc cNames) selectExp Nothing
|
||||
|
||||
ppSQL :: Statement -> Text
|
||||
ppSQL st = TL.toStrict $ prettyStatements (PrettyFlags postgresDialect) [st]
|
||||
-- Update statement
|
||||
update :: Text -> [(Text, ScalarExpr)] -> [TableRef] -> ScalarExpr -> Statement
|
||||
update tName setClauseList fromList whr =
|
||||
Update ea (name tName) (map (uncurry (SetClause ea . nmc)) setClauseList) fromList (Just whr) Nothing
|
||||
|
||||
-- Pretty print statement
|
||||
ppStatement :: Statement -> Text
|
||||
ppStatement st = TL.toStrict $ prettyStatements (PrettyFlags postgresDialect) [st]
|
||||
|
||||
-- Pretty print scalar expression
|
||||
ppScalarExpr :: ScalarExpr -> Text
|
||||
ppScalarExpr = TL.toStrict . prettyScalarExpr (PrettyFlags postgresDialect)
|
||||
|
||||
ppQueryExpr :: QueryExpr -> Text
|
||||
ppQueryExpr = TL.toStrict . prettyQueryExpr (PrettyFlags postgresDialect)
|
||||
|
|
|
|||
Loading…
Reference in New Issue