
sql - Efficiently convert rows to columns - Stack Overflow
I'm looking for an efficient way to convert rows to columns in SQL Server, I heard that PIVOT is not very fast, and I need to deal with lot of records. This is my example: Id Value ColumnName …
sql server - How to convert Rows to Columns - Database …
Nov 21, 2016 · first of all - You must fix main query - select UserId ,FromDate, ToDate, Project, Comment from ( select R.UserId ,R.Text , C.ColumnName from [Columns] C INNER JOIN …
sql - Access the "previous row" value in a SELECT statement - Stack ...
SELECT value - (previous.value) FROM table Imagining that the "previous" variable reference the latest selected row. Of course with a select like that I will end up with n-1 rows selected in a …
How to convert rows values into different columns based on the …
How to convert rows values into different columns based on the values in a Column in SQL Server 2012 Ask Question Asked 8 years, 5 months ago Modified 8 years, 5 months ago
Convert Rows to columns using 'Pivot' in SQL Server
Apr 10, 2013 · Pivot is one of the SQL operator which is used to turn the unique data from one column into multiple column in the output. This is also mean by transforming the rows into …
SQL select only rows with max value on a column [duplicate]
SELECT id, MAX(rev) FROM YourTable GROUP BY id It's never that simple, is it? I just noticed you need the content column as well. This is a very common question in SQL: find the whole …
SQL Server : Columns to Rows - Stack Overflow
Then I CROSS APPLY a function to each XML attribute of this column, so that I get one row per attribute. Overall, this converts columns into rows, without knowing the column names and …
Add a row number to result set of a SQL query - Stack Overflow
Jun 29, 2015 · 93 I have a simple select statement. I want to add a temporary column that will represent number the of rows in my result set. I tried this -
SQL - How to select a row having a column with max value
Thanks all. Now if the date spans for 10 days, I need to make this query for each of the 10 days resulting in 10 rows, with each having a max value of that particular day. Please assist me on …
sql - How to select only the first rows for each unique value of a ...
In the table, one customer like John Smith can have multiple addresses. I need the SELECT query for this table to return only first row found where there are duplicates in 'CName'. For …