I have this table: When I make a delete of a box in this table, I need to make an increment of all the following rows. For example: if I delete BoxNo ‘4’ then the rows which are after the last row of BoxNo ‘4’ (5,6,7,..etc) have to make an increment by 1 and be like (4,5,6,…etc.). I hope I
Tag: row-number
Syntax Error trying to return row number from database
SELECT ROW_NUMBER()OVER(ORDER BY id), x, y, id FROM coordonnees ORDER BY id I’m trying to return the row number of each row (the table named coordonnees with 3 columns: id, x, y), but this code doesn’…
SQL Server – group by with row number – Gaps and Islands
I have a table with data like this I need to create a view on top of this table to have data formatted in the below format for the Flag, basically the duration for which the Flag was Y or N. (EndDateSID – 0 is currently active, so today’s date) Most customers only have a change in their Flag once,
Temp sequence in postgres view
I have a table that I order a certain way often. That ordering is the basis of a derived column we can call rank. If I query the entire table, I can have the database calculate that rank for me: This yields useful results like: With that result set I can determine the rank of any foo. However this requires
how to avoid duplicate on Joining two tables
This result is 2 times A even after using disticnt . My expected result will have only one A. if i remove row_number() over() as rownum its working fine. Why this is happening ? how to resolve. AM using DB2!! Answer There are two rows in marks Table with id = 1 and mark = 50.. So you will get
Should SQL ranking functionality be considered as “use with caution”
This question originates from a discussion on whether to use SQL ranking functionality or not in a particular case. Any common RDBMS includes some ranking functionality, i.e. its query language has elements like TOP n … ORDER BY key, ROW_NUMBER() OVER (ORDER BY key), or ORDER BY key LIMIT n (overview). They do a great job in increasing performance if