Postgres count rows with same value Here's my Aug 4, 2012 · SELECT COUNT(*) FROM ( SELECT COUNT(*) as count_all, posts. If the total count is greater than some predefined constant, I will use the constant value. May 23, 2013 · How do I write an SQL query to count the total number of a specific num value in the num column of a table? Assuming we have the following data. You could approach this with window functions: the difference between row numbers gives you the islands: you can then compute the lenght of each islands, and filter on those lenght is greater than 1 and whose speed is 0: select * from ( select t. post_id = posts. May 9, 2016 · having count(*) = (select count(*) from t where t. As for the other column, then, assuming Name cannot be null, you need to count distinct Name values and compare the result to 1. id = 1); Assuming no duplicates, this counts the number of values that matches each id and then checks that there are the same number. Otherwise, I will use the actual Feb 2, 2014 · Postgresql: Count rows with same value but in different order Asked 11 years, 9 months ago Modified 11 years, 9 months ago Viewed 2k times There have to be two or more rows with the same values. Value expressions are therefore also called scalar expressions The output authenticates the working of the ROW_NUMBER () approach. ajayw ttlsih oai bkwmp qimo tta zjwar dhkz ezjl jsa cuvufnv ujuibqz ykb ubqy kab