SQL statements are case-insensitive, meaning they can be written using lowercase, uppercase or a combination. However, it is customary to write out SQL keywords -- commands or control operators -- in all-caps and table/column names in lowercase. Words in the statement can be treated as case...
Double quotes need to be escaped (backslashed) when used in a json query definition file since the double quote already has meaning in json. Looking back at Example 8, if you expected the ${myMeasurement} results to be column names with numeric names, the query definition would be modified...
SQL Copy SELECT ProductID, ProductModelID FROM Production.Product WHERE ProductModelID = 20 OR ProductModelID = 21 AND Color = 'Red'; GO You can change the meaning of the query by adding parentheses to force evaluation of the OR first. The following query finds only products u...
SQL Copy SELECT ProductID, ProductModelID FROM Production.Product WHERE ProductModelID = 20 OR ProductModelID = 21 AND Color = 'Red'; GO You can change the meaning of the query by adding parentheses to force evaluation of the OR first. The following query finds only products under models...
!inNot equal to any of the elements The list of string operators is a longer list because it has permutations for case sensitivity, substring locations, prefixes, suffixes, and much more. The==operator is both a numeric and string operator, meaning it can be used for both numbers and text...
of the dimension—meaning the real-world identifier of the entity represented by the dimension—commonly cover several columns. You should know that this is an issue for the corresponding foreign key in the fact table since the multi-column composite key will be repeated for each fact table row...
ShapeMeaning CircleQuery completed, which means that a regular execution successfully finished. SquareCanceled, which means that a client-initiated aborted execution. TriangleFailed, which means that an exception aborted execution. Also, the size of the shape reflects the query execution count within th...
Depending on the details of your tables, columns, indexes, and the conditions in your WHERE clause, the MySQL optimizer considers many techniques to efficiently perform the lookups involved in an SQL query. A query on a huge【hjuːdʒ巨大的;非常成功的;极多的;走红的;程度高的;】 table ca...
A vehicle tolling station is a common phenomenon – we encounter them in many expressways, bridges, and tunnels across the world. Each toll station has multiple toll booth lanes that a car can enter, which may be manual – meaning that you stop to pay the toll to...
The temporal state is applied to the entire query, meaning the extension method need only be called once (anywhere in the fluent statement). All joined relationships will have the FOR SYSTEM_TIME predicate applied to the generated SQL. using Microsoft.EntityFrameworkCore; ... var yesterdaysCustome...