Given a table called “Example” as follows; If searching for X,Y,A = returns row 1 (Exact match) If searching for Q,X,A = returns row 3 (Closest match) I can do this as multiple seperate SQL statements … if this returns zero rows, then : … if this returns zero rows, then : … if th…
Linear extrapolate values down to 0 from variable starting points
I want to build a query which allows me to flexible linear extrapolate a number down to Age 0 starting from the last known value. The table (see below) has two columns, column Age and Volume. My last known volume is 321.60 at age 11, how can I linear extrapolate the 321.60 down to age 0 in annual steps? Also,
Can I use a derived column in SQL Server for performing a CASE function?
I have a ‘main’ table, C1, which has a record identifier, which in turn may be linked to either an account or a customer ID. The relationship / linkage is stored on two separate tables, one with record ID – Account level relationship, and the other with record ID – Customer level relat…
How to PIVOT a select result as mentioned in the query
I have query as mentioned below which will return a table like I’m trying to PIVOT this result as below Answer You can try the below way –
How to find records within a certain timeframe based on another field
How do I find all records 7 days before a field in an SQL database? I need to find all transaction dates that were placed 7 days before the pickup date of the same record. I am currently using SequelPro so that my have an effect on available syntaxes. This is currently my table that I am pulling the records
CSV to SQL, but all values are NULL
I am trying to convert a set of relational .csv files to a db with sqlite3: This runs without error and produces a database with the correct tables which have the correct columns. The rows, however, are all NULL for some reason. I have tried debugging the insertion line to see what is going on. I stepped into…
Find all the actors that made more movies with Yash Chopra than any other director
Scehma I’m not getting the right output. I’m getting zero rows . Can someone modify above query and give me the right output, I have tried various queries but not getting anything Answer Check this:
Can I do a case-based foreign key command (either cascade or set null)?
I would like to give the user the option when he is deleting an item in the parent table, to either cascade delete or set null to the items in the child table that references the foreign key, is that possible within SQLITE? or do I have to do this within my code? These are the commands I currently use
INT type in SQL max value calculation
I am currently learning SQL. When looking at the INT, I came to the understanding that an INT type is 4 bytes long, which translates to 8 bits each byte, leading to each INT being 32 bits. However, for INT it is said that the max value for unsigned types is (2^32)-1 where the -1 is accounting for 0 value.
Trigger for UPDATE runs many time on batch Updates
All of my tables have a Trigger for CRUD operations. here is a sample: If I update one row, everything works fine and trigger inserts one row in history. For example But if more than one row updated, updatedrow^2 rows will be inserted. For example 9 for 3 rows 100 for 10 rows… What is wrong with my trig…