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How to create view in query having JOINS?


How to create view in query having JOINS?

By : user2948917
Date : November 15 2020, 06:54 AM
wish help you to fix your issue Hello I am not able to create view for following query. , The easiest solution in your case is to use using instead of on:
code :
create view  my_View as 
    select * 
    from product p LEFT JOIN
         product_description pd 
         USING (product_id);


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Optimize SQL view/query with self joins

Optimize SQL view/query with self joins


By : Vlad Rain
Date : March 29 2020, 07:55 AM
With these it helps overall, your query looked ok, but running as a view, obviously isn't working well for you. That said, I would like to offer a slight re-structuring of the query. Move the WHERE conditions into the JOIN components.
Ensure you have an index on the CommonName on the nodes table you will apply a filter against. On the price_nodes table, have a composite index on ( node_id, markettype, pricetype ).
code :
SELECT 
      N.commonname,
      N.node_id,
      da.pricedate,
      da.hour,
      rt.price            AS rtm,
      da.price            AS dam,
      da.price - rt.price AS dart
   FROM
      dbo.pnodes N

         INNER JOIN dbo.pnode_prices AS da
               ON N.node_id = da.pnode_id
              AND da.markettype = 'DAM'
              AND da.pricetype = 'LMP'

            INNER JOIN dbo.pnode_prices AS rt
               ON da.node_id = rt.pnode_id
              AND rt.markettype = 'RTM'
              AND da.pricetype = rt.pricetype
              AND da.pricedate = rt.pricedate
              AND da.hour = rt.hour
Data Studio query error when using Big Query view that joins tables

Data Studio query error when using Big Query view that joins tables


By : James Morris
Date : March 29 2020, 07:55 AM
help you fix your problem I've created a view to join two tables in Big Query. When I use that view as a data source in Data Studio I get a configuration error. The query used to create the view looks like this: , Please try the following syntax for the view:
code :
SELECT emp.name as _name, emp.gender as _gender, emp.age as _age, pay.salary as _salary 
FROM [project:doug.employees] as emp 
JOIN [project:doug.payrates] as pay on emp.name = pay.name
Blob in query with joins to create a view

Blob in query with joins to create a view


By : Diego
Date : March 29 2020, 07:55 AM
hope this fix your issue I think the problem is that you are trying to group by the blob column. You can work around that easily. Use two selects. The first select is basically what you have but without the blob (and possibly without other columns that can be fetched later). You still get the graphid. The second outer select joins the inner select with the mainapl.grapics table on graphid and returns everything including the blob. Hope that made sense?
EDIT:
code :
CREATE OR REPLACE FORCE VIEW SECAPL.VIEW_DATAFEED2 AS
  select sub.copy1-en, sub.type-en, sub.graphicsid,
     graph.graf, graph.grafformat
  from (SELECT
          MIN(CASE WHEN MAINAPL.ARTCOPY.SPRID = 'EN' AND MAINAPL.ARTCOPY.ARTCOPYNUM = 1 THEN MAINAPL.ARTCOPY.ART-COPY-1 ELSE NULL END ) COPY1-EN, 
          MAX(CASE WHEN MAINAPL.CONT.TONGID = 'EN' AND MAINAPL.CLASS1.CLASSTFRLE1 = '1' THEN MAINAPL.CONT.COPY-ONLY END) AS TYPE-EN,
          MAINAPL.ARTICLEGRAPHICS.GRAPHICSID
        FROM MAINAPL.ARTICLE
        LEFT JOIN MAINAPL.ARTCOPY ON MAINAPL.ARTICLE.ARTID = MAINAPL.ARTCOPY.ARTID
        INNER JOIN MAINAPL.ARTICLEGRAPHICS ON MAINAPL.ARTICLE.ARTID = MAINAPL.ARTICLEGRAPHICS.ARTID
        INNER JOIN MAINAPL.GRAPHICS ON MAINAPL.GRAPHICS.GRAPHICSID = MAINAPL.ARTICLEGRAPHICS.GRAPHICSID
        GROUP BY MAINAPL.ARTICLEGRAPHICS.GRAPHICSID
        ) sub
  join MAINAPL.GRAPHICS ON MAINAPL.GRAPHICS.GRAPHICSID = sub.GRAPHICSID
In a Union Query with repeating joins in queries, is it better to make a view or to repeat the joins in each query

In a Union Query with repeating joins in queries, is it better to make a view or to repeat the joins in each query


By : K L
Date : March 29 2020, 07:55 AM
will help you
My question is, is it more efficient to repeat those joins in each select statement or should I make a view/temp table first and then reference that in each of my select queries.
How to create view with multiple joins on same table

How to create view with multiple joins on same table


By : sajid792
Date : March 29 2020, 07:55 AM
hop of those help? Your view would consist of:
three columns with the columnname pk three columns with the columnname name (which is not a good columnname) three columns with the columnname sirname
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