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Explore details from inside the a customized SQL query
You are able to the next individualized SQL query discover an excellent confidence exactly how many purchases and manage a remaining register towards the Commands and you may Manufacturers tables:
Errors whenever content articles try referenced
In the event the individualized SQL inquire references duplicate articles, you may get mistakes when trying to utilize among the columns in your studies for the Tableau. This can happen even if the query holds true. Instance, consider the pursuing the inquire:
The newest query is valid, but the bien au_id industry are unknown once the in such a case they is obtainable from inside the both “authors” dining table as well as the “titleauthor” table. Tableau usually relate genuinely to the ask however you will rating an error anytime you attempt to use the bien au_id industry. Simply because Tableau will not learn and that dining table you are referring to.
Note: It is an only habit to determine line aliases that have an As the term whenever possible in a personalized SQL Ask. The reason being for every single database features its own laws and regulations whether or not it relates to automatically producing a column name just in case an alias is maybe not made use of.