case-when

I have a huge table of customer orders and I want to run one query to list orders by month for the past 13 months by 'user_id'. What I have now (below) works but instead of only listing one row per user_id it lists one row for each order the user_id has. Ex: one user has 42 total orders over his life with us so it lists his user_id in 42 rows and each row only has one payment. Typically I would just throw this in a pivot table in excel but I'm over the million row limit so I need for it to be right and have had zero success. I would like for the read out to look like this: user_id | jul_12 |

I just begin learning Postgresql recently. I have a table named 'sales': create table sales ( cust varchar(20), prod varchar(20), day integer, month integer, year integer, state char(2), quant integer ) insert into sales values ('Bloom', 'Pepsi', 2, 12, 2001, 'NY', 4232); insert into sales values ('Knuth', 'Bread', 23, 5, 2005, 'PA', 4167); insert into sales values ('Emily', 'Pepsi', 22, 1, 2006, 'CT', 4404); insert into sales values ('Emily', 'Fruits', 11, 1, 2000, 'NJ', 4369); insert into sales values ('Helen', 'Milk', 7, 11, 2006, 'CT', 210); ...... It looks like this: And there are 500

I'm trying to create a new variable that populates with a 1 (true), 0 (false) in MySQL based on a series of dates and ladder levels (null-E). See fiddle: http://sqlfiddle.com/#!9/9975e1 Where the record_dates and ladder_levels aren't necessarily in sequential order. I'd like to return the ladder_change fieldvia a case when (?) statement, that says something like: First, look only within matching IDs (i.e. just for ID 324) Then, something like: case when record_date2 > record_date1 AND (ladder_level2 < ladder_level1 OR ladder_level2>ladder_level1) then 1, else 0 Any tips on how to achieve this?

I need to write a query that returns a Column Dynamically. For example I have a table tblTest with columns: Id, Name, Type, Amount 1, Receipt, Cash 100 2, Receipt, Card 200 3, Receipt, Cheque 250 4, Receipt, Card 150 5, Receipt, Cash 100 6, Payment, Cash 300 7, Payment, Cheque 400 SQL Query : SELECT Name, SUM(CASE WHEN Type = 'Cash' THEN Amount ELSE 0 END) Cash, SUM(CASE WHEN Type = 'Card' THEN Amount ELSE 0 END) Card, SUM(CASE WHEN Type = 'Cheque' THEN Amount ELSE 0 END) Cheque FROM tblTest GROUP BY Name; it returns me, above result is as per my requirement but in my case Type Cash,Card

I want to run this query by using Doctrine in Symfony 2.3. But it seems like Doctrine does not understand CASE statement. Can anyone help? Thank you in advance! SELECT max(id) id, name FROM cards WHERE name like '%John%' GROUP BY name ORDER BY CASE WHEN name like 'John %' THEN 0 WHEN name like 'John%' THEN 1 WHEN name like '% John%' THEN 2 ELSE 3 END, name Kapil If you are using createQueryBuilder then you can use like $query->addSelect("(CASE WHEN name like 'John %' THEN 0 WHEN name like 'John%' THEN 1 WHEN name like '% John%' THEN 2 ELSE 3 END) AS HIDDEN ORD "); $query->orderBy('ORD', 'DESC'