phpPgAdmin might work for you, if you’re already familiar with phpMyAdmin. Please note that development of phpPgAdmin has moved to github per this notice but the SourceForge link above is for historical / documentation purposes. But really there are dozens of tools that can do this.
One option is to put the subquery in a LEFT JOIN: Perhaps a better option would be to use SUM with CASE: SQL Fiddle Demo with both
Let’s say for instance you want to get a list of all your customers: And let’s assume that each Customer object has a reference to its set of Orders, and that each Order has references to LineItems which may also reference a Product. As you can see, selecting a top-level object with many related entities … Read more
You could use NOT IN
Add a WHERE clause
You are dropping it, then creating it, then trying to create it again by using SELECT INTO. Change to: In MS SQL Server you can create a table without a CREATE TABLE statement by using SELECT INTO
I think what you are asking for will work by joining the Initial table to both Option_A and Option_B using LEFT JOIN, which will produce something like this: Example code: Once you have done this, you ‘ignore’ the set of NULLS. The additional trick here is in the SELECT line, where you need to decide … Read more
Postgres allows: This syntax is not standard SQL, but it is much more convenient for this type of query than standard SQL. I believe Oracle (at least) accepts something similar.
Taken from the MySQL manual (13.2.10.11 Rewriting Subqueries as Joins): A LEFT [OUTER] JOIN can be faster than an equivalent subquery because the server might be able to optimize it better—a fact that is not specific to MySQL Server alone. So subqueries can be slower than LEFT [OUTER] JOIN, but in my opinion their strength … Read more
OK. I finally created a view that works: Thanks to AdaTheDev and CodeByMoonlight. I used your two answers to get to this. (Thanks to the other repliers too of course) Now when I do joins with other bigint cols or do something like ‘SELECT * FROM MyView where mycol=1’ it returns the correct result with … Read more