add: "mysql_sanitize_string.sql"

mysql_sanitize_string.sql

@@ -0,0 +1,19 @@
+DELIMITER $$
+
+CREATE FUNCTION remove_bracketed_text(input_text TEXT) 
+RETURNS TEXT DETERMINISTIC
+BEGIN
+	DECLARE output_text TEXT DEFAULT input_text;
+	DECLARE previous_text TEXT;
+
+	-- Loop until no more bracketed text is found
+	REPEAT
+		SET previous_text = output_text;
+		SET output_text = REGEXP_REPLACE(output_text COLLATE utf8mb4_unicode_ci, '\\[[^]]*\\]', '');
+	UNTIL output_text = previous_text
+	END REPEAT;
+
+	RETURN output_text;
+END $$
+
+DELIMITER ;