Skip to content Skip to sidebar Skip to footer
Showing posts with the label Aggregate Functions
Postgresql: Identifying Return Visitors Based On Date - Joins Or Window Functions?

Postgresql: Identifying Return Visitors Based On Date - Joins Or Window Functions?

Post a Comment
I am looking to identify return visitors to a website within a 7 day window. A data sample and atte… Read more Postgresql: Identifying Return Visitors Based On Date - Joins Or Window Functions?
Row_number() Shows Unexpected Values

Row_number() Shows Unexpected Values

Post a Comment
My table has values like (RowCount is generated by the query below): ID Date_trans Time_tra… Read more Row_number() Shows Unexpected Values
First Aggregate Function Which I Can Use With Having Clause

First Aggregate Function Which I Can Use With Having Clause

Post a Comment
I have a weird requirement which I need to use inside my Stored Procedure in SQL Server 2008 R2. I… Read more First Aggregate Function Which I Can Use With Having Clause
Array Not Being Returned By Select Query Inside Plpgsql Test Case

Array Not Being Returned By Select Query Inside Plpgsql Test Case

Post a Comment
SELECT query I am using: SELECT ARRAY[table_name,pg_size_pretty(table_size)] FROM ( SELECT … Read more Array Not Being Returned By Select Query Inside Plpgsql Test Case
Is There A Better Way To Calculate The Median (not Average)

Is There A Better Way To Calculate The Median (not Average)

Post a Comment
Suppose I have the following table definition: CREATE TABLE x (i serial primary key, value integer… Read more Is There A Better Way To Calculate The Median (not Average)
Sql Get Row_number And Count On Every Select Request

Sql Get Row_number And Count On Every Select Request

Post a Comment
I´m building a grid mechanism where I need to retrieve data from Database the total or records foun… Read more Sql Get Row_number And Count On Every Select Request