Up to 254 additional arguments.Back to top3. Things to knowThe SUMPRODUCT function is one of the most powerful functions in Excel and is one that I often use. I highly recommend learning how it works.The SUMPRO
Learn how to use a common table expression or CTE in SQL, and read how recursive CTEs turn impossible Postgres queries into possible.
To group rows into part of a datetime value withOracle SQLyou can use thetruncfunction. This rounds down datetime values. The first argument is the datetime and the second is the units to round down to. For example, this groups the rows by hour: Copy code snippet Copied to Clipboard Erro...
--PRINT @DB +',' + @LogFile SELECT@SQL ='EXEC sp_dbOption ['+ @DB +'], ''trunc. log on chkpt.'', ''True''' EXEC(@SQL) SELECT@SQL ='USE ['+ @DB +'] DBCC SHRINKFILE('''+ @LogFile +''',''truncateonly'') WITH NO_INFOMSGS' EXEC(@SQL) SELECT@SQL ='EXEC sp_dbOption ...
Indexes. They're one of the most powerful and misunderstood aspects of SQL performance. In this post we'll look at the purpose of an index, how to create and choose choose your index type. Then finish with a discussion of how to decide what to index and
string. However, in some cases we may not need the extra length of the string and can be trimmed and inserted. In such situations, there is an option in SQL Server to avoid the error and insert the data by automatically trimming it. Let us see how to use the option with an example....
Learn how to use the SQL ROUND function in this tutorial. It covers the implementation of the ROUND function in Oracle, MySQL, PostgreSQL, and SQL Server.
There are two ways to do this in Tableau :If you CAN USE sql AND YOU actually need the ...
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Once you have created all the necessary database objects, the next step is to load data into the tables. You can manually load data using the import functionality available in SQL Scripts. In the following exercise, you use SQL Scripts to load demonstration data....