Added schema query for Snowflake

Author: makaroni4

README.md

@@ -111,14 +111,30 @@ JOIN %PROJECT_NAME%.%DATASET_NAME%.INFORMATION_SCHEMA.TABLES t
   AND c.table_name = t.table_name
 WHERE
   c.table_schema NOT IN ('INFORMATION_SCHEMA')
-ORDER BY
-  c.table_schema,
-  c.table_name,
-  c.ordinal_position;
+ORDER BY 1, 2, 5
 ```
 
 :mag: Make sure to replace `%PROJECT_NAME%.%DATASET_NAME%` with proper values.
 
+#### Snowflake
+
+```sql
+SELECT
+  c.table_schema,
+  c.table_name,
+  c.column_name,
+  c.data_type,
+  c.ordinal_position
+FROM information_schema.columns c
+JOIN information_schema.tables t
+  ON c.table_schema = t.table_schema
+  AND c.table_name = t.table_name
+WHERE
+  c.table_schema NOT IN ('INFORMATION_SCHEMA')
+  AND t.table_type = 'BASE TABLE'
+ORDER BY 1, 2, 5
+```
+
 #### MySQL
 
 ```sql
@@ -135,6 +151,7 @@ LEFT JOIN information_schema.views v
 WHERE
   c.table_schema NOT IN ('sys','information_schema', 'mysql', 'performance_schema')
   AND c.table_name NOT IN ('schema_migrations', 'ar_internal_metadata')
+ORDER BY 1, 2, 5
 ```
 
 #### [SAP ASE](https://github.com/sqlhabit/sql_schema_visualizer/issues/8)