Note that in those error cases the function must not return a string but produce an SQL error. What I wrote so far: DELIMITER $$ CREATE FUNCTION totalRaceTime( raceNumber INT, raceName VARCHAR(30), raceDat
[Forum FAQ] How to fix the Error “The column XX cannot be processed because more than one code page (65001 and 1252) are specified for it” in SSIS? [Microsoft][ODBC SQL Server Driver][DBNETLIB] General Network error. Check your network documentation [OLE DB Destination [16]] Error: F...
If you want to pass a string value to SQL Server, use the Dexterity SQL_FormatStrings() global function to make sure that strings are wrapped in single quotation marks. If a single quotation mark exists in the string, you must add a second single quotation mark to stop the premature ...
Note that DISTINCT is not supported with window COUNT() function whereas it is supported for the regular COUNT() function. DISTINCT helps you to find the distinct values of a specified field. For example, if we want to see how many customers have placed an order in April 2017, we cannot ...
As you have seen before, the execution plan defines, among other things, what algorithm is used for each operation, which makes that every query execution time can be logically expressed as a function of the table size involved in the query plan, which is referred to as a complexity function...
Using SQL AVG with GROUP BY The last two queries used the WHERE clause to filter the rows we are plan to use the AVG function on. In one query, we filtered the results by a result from the AVG function. In the second, we used WHERE to filter the results that it will use to gener...
Ensuring that queries are performant or that they fit the context that you’re working in is a whole other thing. That’s why this SQL tutorial will provide you with a small peek at some steps that you can go through to evaluate your query: First off, you’ll start with a short ...
There is a write function documented in the CoreImage Metal shader reference here: https://developer.apple.com/metal/MetalCIKLReference6.pdf But I'm not sure how to use it. I assumed one would be able to use it on the destination parameter i.e. dest.write(...) but I get the error...
Just like in most databases, in PostgreSQL a trigger is a way to automatically respond to events. Maybe you want to run a function if data is inserted into a table. Maybe you want to audit the deletion of data, or simply respond to some UPDATE statement. That is exactly what a trigger...
How to Convert Date to Year in SQL? Another situation would be trying to get the year from a date value. Let’s try theCONVERTfunction; you can easily do this with other functions we learned earlier. SELECT GETDATE() 'Today Date', CONVERT(VARCHAR(4), getdate(), 120) 'Date as Year...