In the second query, there's embedded group-by that potentially greatly reduces the number of rows. Try adding DISTINCT to the first query: "select DISTINCT id, age, count (*) over …

How can I select count(*) from two different tables (call them tab1 and tab2) having as result: Count_1 Count_2 123 456 I've tried this: select count(*) Count_1 from schema.tab1 union all

Note that as an alternative to distinct, as I have made the correction, you can also/better use group by with the benefit of replacing an entire nested query with a simple count(*) as @Mihai …

Sep 27, 2013 · If you want the result to be in one row you can use:

Mar 7, 2015 · I need to send a SQL query to a database that tells me how many rows there are in a table. I could get all the rows in the table with a SELECT and then count them, but I don't like …

Apr 27, 2010 · I have an SQL SELECT query that also uses a GROUP BY, I want to count all the records after the GROUP BY clause filtered the resultset. Is there any way to do this directly …

Is it possible to specify a condition in Count()? I would like to count only the rows that have, for example, "Manager" in the Position column. I want to do it in the count statement, not using WH...

Jul 28, 2019 · It uses a common table expression (CTE) and a partition window (I think these features are in SQL 2008 and later). This example finds all students with duplicate name and …

108 You have to create a derived table for the distinct columns and then query the count from that table:

May 20, 2011 · I was trying to count the no. of rows in a SQL Server table using MS SQL Server Management Studio and ran into some overflow error, then I used the below : select count_big …