236 lines
6.1 KiB
Plaintext
236 lines
6.1 KiB
Plaintext
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Here are the tests for the group by component of query exprs
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> {-# LANGUAGE OverloadedStrings #-}
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> module Language.SQL.SimpleSQL.GroupBy (groupByTests) where
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> import Language.SQL.SimpleSQL.TestTypes
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> import Language.SQL.SimpleSQL.Syntax
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> groupByTests :: TestItem
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> groupByTests = Group "groupByTests"
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> [simpleGroupBy
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> ,newGroupBy
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> ]
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> simpleGroupBy :: TestItem
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> simpleGroupBy = Group "simpleGroupBy" $ map (uncurry TestQueryExpr)
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> [("select a,sum(b) from t group by a"
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> ,makeSelect {qeSelectList = [(Nothing, Iden "a")
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> ,(Nothing, App "sum" [Iden "b"])]
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> ,qeFrom = [TRSimple "t"]
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> ,qeGroupBy = [SimpleGroup $ Iden "a"]
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> })
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> ,("select a,b,sum(c) from t group by a,b"
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> ,makeSelect {qeSelectList = [(Nothing, Iden "a")
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> ,(Nothing, Iden "b")
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> ,(Nothing, App "sum" [Iden "c"])]
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> ,qeFrom = [TRSimple "t"]
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> ,qeGroupBy = [SimpleGroup $ Iden "a"
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> ,SimpleGroup $ Iden "b"]
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> })
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> ]
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test the new group by (), grouping sets, cube and rollup syntax (not
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sure which sql version they were introduced, 1999 or 2003 I think).
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> newGroupBy :: TestItem
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> newGroupBy = Group "newGroupBy" $ map (uncurry TestQueryExpr)
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> [("select * from t group by ()", ms [GroupingParens []])
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> ,("select * from t group by grouping sets ((), (a))"
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> ,ms [GroupingSets [GroupingParens []
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> ,GroupingParens [SimpleGroup $ Iden "a"]]])
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> ,("select * from t group by cube(a,b)"
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> ,ms [Cube [SimpleGroup $ Iden "a", SimpleGroup $ Iden "b"]])
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> ,("select * from t group by rollup(a,b)"
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> ,ms [Rollup [SimpleGroup $ Iden "a", SimpleGroup $ Iden "b"]])
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GROUP BY a
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GROUP BY GROUPING SETS((a))
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GROUP BY a,b,c
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GROUP BY GROUPING SETS((a,b,c))
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GROUP BY ROLLUP(a,b)
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GROUP BY GROUPING SETS((a,b)
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(a)
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() )
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GROUP BY ROLLUP(b,a)
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GROUP BY GROUPING SETS((b,a)
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(b)
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() )
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GROUP BY CUBE(a,b,c)
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GROUP BY GROUPING SETS((a,b,c)
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(a,b)
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(a,c)
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(b,c)
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(a)
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(b)
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(c)
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() )
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GROUP BY ROLLUP(Province, County, City)
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GROUP BY ROLLUP(Province, (County, City))
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GROUP BY ROLLUP(Province, (County, City))
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GROUP BY GROUPING SETS((Province, County, City)
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(Province)
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() )
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GROUP BY GROUPING SETS((Province, County, City)
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(Province, County)
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(Province)
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() )
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GROUP BY a, ROLLUP(b,c)
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GROUP BY GROUPING SETS((a,b,c)
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(a,b)
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(a) )
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GROUP BY a, b, ROLLUP(c,d)
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GROUP BY GROUPING SETS((a,b,c,d)
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(a,b,c)
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(a,b) )
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GROUP BY ROLLUP(a), ROLLUP(b,c)
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GROUP BY GROUPING SETS((a,b,c)
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(a,b)
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(a)
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(b,c)
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(b)
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() )
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GROUP BY ROLLUP(a), CUBE(b,c)
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GROUP BY GROUPING SETS((a,b,c)
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(a,b)
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(a,c)
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(a)
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(b,c)
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(b)
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(c)
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() )
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GROUP BY CUBE(a,b), ROLLUP(c,d)
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GROUP BY GROUPING SETS((a,b,c,d)
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(a,b,c)
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(a,b)
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(a,c,d)
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(a,c)
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(a)
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(b,c,d)
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(b,c)
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(b)
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(c,d)
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(c)
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() )
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GROUP BY a, ROLLUP(a,b)
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GROUP BY GROUPING SETS((a,b)
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(a) )
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GROUP BY Region,
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ROLLUP(Sales_Person, WEEK(Sales_Date)),
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CUBE(YEAR(Sales_Date), MONTH (Sales_Date))
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GROUP BY ROLLUP (Region, Sales_Person, WEEK(Sales_Date),
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YEAR(Sales_Date), MONTH(Sales_Date) )
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SELECT WEEK(SALES_DATE) AS WEEK,
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DAYOFWEEK(SALES_DATE) AS DAY_WEEK,
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SALES_PERSON, SUM(SALES) AS UNITS_SOLD
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FROM SALES
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WHERE WEEK(SALES_DATE) = 13
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GROUP BY WEEK(SALES_DATE), DAYOFWEEK(SALES_DATE), SALES_PERSON
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ORDER BY WEEK, DAY_WEEK, SALES_PERSON
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SELECT WEEK(SALES_DATE) AS WEEK,
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DAYOFWEEK(SALES_DATE) AS DAY_WEEK,
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SALES_PERSON, SUM(SALES) AS UNITS_SOLD
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FROM SALES
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WHERE WEEK(SALES_DATE) = 13
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GROUP BY GROUPING SETS ( (WEEK(SALES_DATE), SALES_PERSON),
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(DAYOFWEEK(SALES_DATE), SALES_PERSON))
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ORDER BY WEEK, DAY_WEEK, SALES_PERSON
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SELECT WEEK(SALES_DATE) AS WEEK,
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DAYOFWEEK(SALES_DATE) AS DAY_WEEK,
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SALES_PERSON, SUM(SALES) AS UNITS_SOLD
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FROM SALES
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WHERE WEEK(SALES_DATE) = 13
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GROUP BY ROLLUP ( WEEK(SALES_DATE), DAYOFWEEK(SALES_DATE), SALES_PERSON )
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ORDER BY WEEK, DAY_WEEK, SALES_PERSON
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SELECT WEEK(SALES_DATE) AS WEEK,
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DAYOFWEEK(SALES_DATE) AS DAY_WEEK,
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SALES_PERSON, SUM(SALES) AS UNITS_SOLD
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FROM SALES
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WHERE WEEK(SALES_DATE) = 13
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GROUP BY CUBE ( WEEK(SALES_DATE), DAYOFWEEK(SALES_DATE), SALES_PERSON )
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ORDER BY WEEK, DAY_WEEK, SALES_PERSON
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SELECT SALES_PERSON,
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MONTH(SALES_DATE) AS MONTH,
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SUM(SALES) AS UNITS_SOLD
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FROM SALES
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GROUP BY GROUPING SETS ( (SALES_PERSON, MONTH(SALES_DATE)),
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()
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)
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ORDER BY SALES_PERSON, MONTH
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SELECT WEEK(SALES_DATE) AS WEEK,
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DAYOFWEEK(SALES_DATE) AS DAY_WEEK,
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SUM(SALES) AS UNITS_SOLD
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FROM SALES
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GROUP BY ROLLUP ( WEEK(SALES_DATE), DAYOFWEEK(SALES_DATE) )
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ORDER BY WEEK, DAY_WEEK
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SELECT MONTH(SALES_DATE) AS MONTH,
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REGION,
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SUM(SALES) AS UNITS_SOLD
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FROM SALES
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GROUP BY ROLLUP ( MONTH(SALES_DATE), REGION );
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ORDER BY MONTH, REGION
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SELECT WEEK(SALES_DATE) AS WEEK,
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DAYOFWEEK(SALES_DATE) AS DAY_WEEK,
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MONTH(SALES_DATE) AS MONTH,
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REGION,
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SUM(SALES) AS UNITS_SOLD
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FROM SALES
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GROUP BY GROUPING SETS ( ROLLUP( WEEK(SALES_DATE), DAYOFWEEK(SALES_DATE) ),
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ROLLUP( MONTH(SALES_DATE), REGION ) )
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ORDER BY WEEK, DAY_WEEK, MONTH, REGION
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SELECT R1, R2,
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WEEK(SALES_DATE) AS WEEK,
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DAYOFWEEK(SALES_DATE) AS DAY_WEEK,
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MONTH(SALES_DATE) AS MONTH,
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REGION, SUM(SALES) AS UNITS_SOLD
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FROM SALES,(VALUES(’GROUP 1’,’GROUP 2’)) AS X(R1,R2)
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GROUP BY GROUPING SETS ((R1, ROLLUP(WEEK(SALES_DATE),
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DAYOFWEEK(SALES_DATE))),
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(R2,ROLLUP( MONTH(SALES_DATE), REGION ) )
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ORDER BY WEEK, DAY_WEEK, MONTH, REGION
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)
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SELECT COALESCE(R1,R2) AS GROUP,
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WEEK(SALES_DATE) AS WEEK,
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DAYOFWEEK(SALES_DATE) AS DAY_WEEK,
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MONTH(SALES_DATE) AS MONTH,
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REGION, SUM(SALES) AS UNITS_SOLD
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FROM SALES,(VALUES(’GROUP 1’,’GROUP 2’)) AS X(R1,R2)
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GROUP BY GROUPING SETS ((R1, ROLLUP(WEEK(SALES_DATE),
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DAYOFWEEK(SALES_DATE))),
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(R2,ROLLUP( MONTH(SALES_DATE), REGION ) )
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ORDER BY GROUP, WEEK, DAY_WEEK, MONTH, REGION;
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)
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SELECT MONTH(SALES_DATE) AS MONTH,
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REGION,
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SUM(SALES) AS UNITS_SOLD,
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MAX(SALES) AS BEST_SALE,
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824
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SQL Reference Volume 1
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Examples of grouping sets, cube, and rollup queries
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CAST(ROUND(AVG(DECIMAL(SALES)),2) AS DECIMAL(5,2)) AS AVG_UNITS_SOLD
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FROM SALES
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GROUP BY CUBE(MONTH(SALES_DATE),REGION)
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ORDER BY MONTH, REGION
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> ]
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> where
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> ms g = makeSelect {qeSelectList = [(Nothing,Star)]
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> ,qeFrom = [TRSimple "t"]
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> ,qeGroupBy = g}
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