Lab Sql

I have two different query (having same no. of columns in result). I want to put both in one table.… Read more Add Two Different Queries Result Into One Table

Above is my simple database design, just wanted to gain information about how things happen as I… Read more Does The Foreign Keys Automatically Get Updated As Primary Table Is Updated?

My company is now supporting Oracle for the first time, and most of my colleagues are SQL Server de… Read more Help Me Put Oracle Terminology Into Sql Server Terminology

I am using select field1, max(updated_date) from mytable. I get the correct value for max(updated_d… Read more Getting Wrong Values For Other Columns When I Select Max(updated_date)

I have a table named Groups with primary key = Pkey. In Group there is a recursive association Pare… Read more Constraint In Mysql Table?

I have the following simple table: CREATE TABLE tbl_test ( id serial NOT NULL, poly polygon NOT… Read more Sql Query For Point-in-polygon Using Postgresql

Using the data below: How do I get the sum of the cost of each incident based on two columns (crim… Read more How Do I Aggregate Data From 2 Columns Referencing Another Table And Also Get The Monthly Totals For The Past 3 Months?

I've seen reading recently to try and understand initially what the difference was between SQL … Read more Are Sql Queries Limited By The Dbms Used?