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sql query to calculate the difference between two dates of different columns and adjacent rows SELECT DATEDIFF(minute,'2016-06-01 20:17:48','2016-06-01 20:50:17') Mention that you should change that in order you want and always increase the startT + 1 I used this query to compare databases of repositories of two versions of Dataedo. The first method is querying the sys.columns system catalog view, that returns one row for each column of an object that has a column, with the properties of each column. Example: In the travel table, there are three columns: id, departure, and arrival. Create a query in Query Design. It shows that in version 7 we removed erd_nodes_columns column in dbo.columns table and added a number of columns in various tables as you can see below. Have tried Lead and lag with partitions but can't seem to narrow it down. How to find the difference between two timestamp column * FROM ( SELECT * FROM Table1 EXCEPT SELECT * FROM Table2 ) AS T1 UNION ALL SELECT 'TABLE2-ONLY' AS SRC, T2. To fully compare the queries, we need to make 3 comparisons. It also generates a script with the INSERT, UPDATE and DELETE statements to synchronize the tables. How to calculate time difference between two columns? - oracle-tech Compare tables and columns in two databases on SQL Server As long as the number of columns are the same, order, data types and nullability, it . This can be found in "C:\Program Files\Microsoft SQL Server\110\COM\" folder. After, that we will execute our query on that table. SQL Server DATEDIFF Function By Practical Examples Syntax for inner join : SELECT column_name (s) FROM table1 t1 INNER JOIN table1 t2 on t1.column1 = t2.column1; To do that SQL provides the OVER-clause: Now my challenge is that I need to match two databases and the same table to detect column differences using a query. Code language: SQL (Structured Query Language) (sql) The result of the DIFFERENCE() indicates the difference between the two SOUNDEX() values on a scale of 0 to 4. Assuming your table has some kind of unique key (primary key - like ID) to determine the difference between one row and another row, you could use a correlated exists check. Let us first create a table with columns for which we will calculate the difference in a new column − mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, LowValue int, HighValue int ); Query OK, 0 rows affected (0.62 sec) Insert some records in the table using insert command −