Skip to content

Nesting/unnesting many/catListTable crashes? #168

@tomjaguarpaw

Description

@tomjaguarpaw

Consider the following Rel8 program. It produces SQL which crashes.

Query Error: error: could not identify column "f1" in record data type

Is this known/expected?

The ultimate problem is that .f1, .f2, etc. for accessing fields of ROWs don't really work "through" SELECTs.

*Rel8 Data.Int Prelude> putStr $ showQuery $ do { q1 <- many (many (values [1 , 2 :: Expr Int16])); q2 <- catListTable q1; catListTable q2 }
SELECT
CAST("unnest0_9" AS int2) as "anon"
FROM (SELECT
      UNNEST("unnest0_7") as "unnest0_9",
      *
      FROM (SELECT
            (UNNEST(CASE WHEN ("rebind0_5") IS NULL THEN CAST(ARRAY[] AS record[]) ELSE "result0_4" END)).f1 as "unnest0_7",
            *
            FROM (SELECT *
                  FROM
                  (SELECT
                   0) as "T1"
                  LEFT OUTER JOIN
                  (SELECT
                   TRUE as "rebind0_5",
                   *
                   FROM (SELECT
                         *
                         FROM (SELECT
                               ARRAY_AGG("inner0_4") as "result0_4"
                               FROM (SELECT
                                     ROW(CASE WHEN ("rebind0_3") IS NULL THEN CAST(ARRAY[] AS int2[]) ELSE "result0_2" END) as "inner0_4",
                                     *
                                     FROM (SELECT *
                                           FROM
                                           (SELECT
                                            0) as "T1"
                                           LEFT OUTER JOIN
                                           (SELECT
                                            TRUE as "rebind0_3",
                                            *
                                            FROM (SELECT
                                                  *
                                                  FROM (SELECT
                                                        ARRAY_AGG("inner0_2") as "result0_2"
                                                        FROM (SELECT
                                                              "values0_1" as "inner0_2",
                                                              *
                                                              FROM (SELECT
                                                                    *
                                                                    FROM (SELECT "column1" as "values0_1"
                                                                          FROM
                                                                          (VALUES
                                                                           (CAST(1 AS int2)),
                                                                           (CAST(2 AS int2))) as "V") as "T1") as "T1") as "T1"
                                                        GROUP BY COALESCE(0)) as "T1") as "T1") as "T2"
                                           ON
                                           TRUE) as "T1") as "T1"
                               GROUP BY COALESCE(0)) as "T1") as "T1") as "T2"
                  ON
                  TRUE) as "T1") as "T1") as "T1"

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions