unpivot

Basically what I am trying to do is transpose every other column to a row with the following columns data beside it. The source can have only two columns up to one-thousand and millions of rows. I am only doing this on a per-row basis. I have tried doing a "UNION ALL" however this is incredibly slow when dealing with hundreds of columns in a large table. Possible solutions are using UNPIVOT although every example I can find is doing something different from what I want. Example: Before Query Columns... Apple | Apple Data | Banana | Banana Data | Cranberry | Cranberry Data | .... Data Returned.

Table : Popular UserName FriendName -------- ---------- John Sarah Philip Ursula John Marry John Jeremy Philip Brock Khan Lemy And I want list with query; John Philip Khan -------- ---------- -------- Sarah Ursula Lemy Marry Brock -NULL- Jeremy -NULL- -NULL- I have 100+ Username... help me for to list with SQL Query (MSSQL) ChrisCarroll If you have "100+ UserNames" you will want this to be DYNAMIC so that you don't have to type out specific CASE statements for each UserName. Also you won't want to have to update your script every time a new UserName is added to your table. The below script

I have a table: Table_Name: price_list --------------------------------------------------- | id | price_type_a | price_type_b | price_type_c | --------------------------------------------------- | 1 | 1234 | 5678 | 9012 | | 2 | 3456 | 7890 | 1234 | | 3 | 5678 | 9012 | 3456 | --------------------------------------------------- I need a select query in Postgres which gives result like this: --------------------------- | id | price_type | price | --------------------------- | 1 | type_a | 1234 | | 1 | type_b | 5678 | | 1 | type_c | 9012 | | 2 | type_a | 3456 | | 2 | type_b | 7890 | | 2 | type_c |

I'm able to unpivot a table but null values are not included in the result. create table pivot_task ( age int null, [a] numeric(8,2), [b] numeric(8,2), [c] numeric(8,2), [d] numeric(8,2), [e] numeric(8,2) ); select * from pivot_task; insert into pivot_task values (18, 0.5, null, 0.6, 1.21, 1.52), (19, 7.51, 6.51, 5.51, null, 3.53), (20, 4.52, 4.52, 6.52, 3.53, null); select age, [over], [av] from pivot_task unpivot ( [av] for [over] in ([a], [b], [c], [d], [e]) ) a; You can see the result on http://sqlfiddle.com/#!6/2ab59/1 for 18 age [over] b and its null value is missing I want to include

I am transforming data from this legacy table: Phones(ID int, PhoneNumber, IsCell bit, IsDeskPhone bit, IsPager bit, IsFax bit) These bit fields are not nullables and, potentially, all four bit fields can be 1. How can I unpivot this thing so that I end up with a separate row for each bit field = 1 . For instance, if the original table looks like this... ID, PhoneNumber, IsCell, IsPager, IsDeskPhone, IsFax ---------------------------------------------------- 1 123-4567 1 1 0 0 2 123-6567 0 0 1 0 3 123-7567 0 0 0 1 4 123-8567 0 0 1 0 ... I want the result to be the following: ID PhoneNumber