Redshift – Choosing DistKey – Amazon web services
Is it possible to use 2 dist keys in a table? I have a query which makes use of 3 tables. Table 1 - Table 2 join on ID1 and Table 2 - Table 3 join on ID2. I need…
Amazon web services – How to get records sharing the same column values in one single row
I have a table that looks like this Tep ID number Date Value type ABC 1 22-09-2021 1.2 X XYZ 2 22-10-2021 3.2 X ABC 3 22-10-2021 3.2 Y WSH 4 22-10-2021 3.2 X I want the output like this…
Amazon web services – Best way to select random rows in redshift without order by
i have to select a set of rows (like 200 unique rows) from 200 million rows at once without order by and it must be efficient.
Amazon web services – Selecting distinct rows from two tables and replacing the values
I have a base_table and a final_table having same columns with plan and date being the primary keys. The data flow happens from base to final table. Initially final table will look like below: After that the base table will…
Amazon web services – Why does LEFT OUTER JOIN produce the same results as INNER JOIN in DBEAVER when querying from Redshift?
I have 2 tables. t1.uuid has 630,000 distinct values. t2.uuid has 300,000 distinct values. When I run SELECT t1.uuid , t2.uuid FROM t1 --630,000 uuids LEFT OUTER JOIN t2 -- 300,000 uuids ON t1.uuid = t2.uuid WHERE t2.uuid IS NULL…
SQL Regex substr function in amazon redshift – SEO
In my database, there is a table which shows the landing pages, and what I want to do is to classify if the traffic is from SEO channel. When the landing page is exactly equal to the pattern /countrycode/index.aspx, then…