merge mod-eluna

sql/README.md

@@ -0,0 +1,24 @@
+# BEST PRACTICES
+
+## Create a new table
+
+**Example:**
+```
+CREATE TABLE IF NOT EXISTS `table`(
+  `id` int(11) unsigned NOT NULL,
+  `active` BOOLEAN DEFAULT NULL,
+  PRIMARY KEY (`id`)
+) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+```
+
+**Boolean datatype in mysql:**
+Use "TinyInt(1)"" or "Boolean" (this is the same thing)
+
+"bit(1)" can also work, but it may require a syntax like b'(0) and b'(1) when inserting (not sure).
+
+If there are multiple booleans in the same table, bit(1) is better, otherwise it's the same result.
+
+
+## Resources
+
+https://www.w3schools.com/sql/sql_datatypes.asp