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https://issues.apache.org/jira/browse/SPARK-5791?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14319364#comment-14319364
]
Yi Zhou edited comment on SPARK-5791 at 2/28/15 12:39 AM:
----------------------------------------------------------
INSERT INTO TABLE q22_spark_RUN_QUERY_0_result
SELECT *
FROM (
SELECT
w_warehouse_name,
i_item_id,
SUM(
CASE WHEN datediff(d_date, '2001-05-08') < 0
THEN inv_quantity_on_hand
ELSE 0 END
) AS inv_before,
SUM(
CASE WHEN datediff(d_date, '2001-05-08') >= 0
THEN inv_quantity_on_hand
ELSE 0 END
) AS inv_after
FROM (
SELECT *
FROM inventory inv
JOIN (
SELECT
i_item_id,
i_item_sk
FROM item
WHERE i_current_price > 0.98
AND i_current_price < 1.5
) items
ON inv.inv_item_sk = items.i_item_sk
JOIN warehouse w ON inv.inv_warehouse_sk = w.w_warehouse_sk
JOIN date_dim d ON inv.inv_date_sk = d.d_date_sk
WHERE datediff(d_date, '2001-05-08') >= -30
AND datediff(d_date, '2001-05-08') <= 30
) q22_coalition_22
GROUP BY w_warehouse_name, i_item_id
) name
WHERE inv_before > 0
AND inv_after / inv_before >= 2.0 / 3.0
AND inv_after / inv_before <= 3.0 / 2.0
CLUSTER BY
w_warehouse_name,
i_item_id;
was (Author: jameszhouyi):
For example:
SELECT *
FROM inventory inv
JOIN (
SELECT
i_item_id,
i_item_sk
FROM item
WHERE i_current_price > 0.98
AND i_current_price < 1.5
) items
ON inv.inv_item_sk = items.i_item_sk
JOIN warehouse w ON inv.inv_warehouse_sk = w.w_warehouse_sk
JOIN date_dim d ON inv.inv_date_sk = d.d_date_sk
WHERE datediff(d_date, '2001-05-08') >= -30
AND datediff(d_date, '2001-05-08') <= 30;
> [Spark SQL] show poor performance when multiple table do join operation
> -----------------------------------------------------------------------
>
> Key: SPARK-5791
> URL: https://issues.apache.org/jira/browse/SPARK-5791
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 1.2.0
> Reporter: Yi Zhou
> Attachments: Physical_Plan.txt
>
>
> Spark SQL shows poor performance when multiple tables do join operation
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