Create README.md

Sshashank0743 · Sep 26, 2022 · c011b56 · c011b56
1 parent ac90034
commit c011b56
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/SQL Query Expression/README.md b/SQL Query Expression/README.md
@@ -0,0 +1,5 @@
+## Queries with expressions
+
+Each database has its own supported set of mathematical, string, and date functions that can be used in a query, which you can find in their own respective docs.
+
+The use of expressions can save time and extra post-processing of the result data, but can also make the query harder to read, so we recommend that when expressions are used in the SELECT part of the query, that they are also given a descriptive alias using the AS keyword.