Create how-to-convert-ordinary-to-atomic.md

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+---
+title: "How to Convert Ordinary to Atomic"
+linkTitle: "Ordinary to Atomic"
+weight: 100
+description: >-
+     Clickhouse Howto Convert Ordinary to Atomic
+---
+
+## Example How to Convert Ordinary to Atomic
+
+```sql
+create database db engine=Ordinary;
+create table db.test(A Int64) Engine=MergeTree order by A;
+
+create materialized view db.test_mv(A Int64) 
+Engine=MergeTree order by A as select * from db.test;
+
+insert into db.test select * from numbers(1000);
+
+create database db_temp engine=Atomic;
+
+rename table db.test to db_temp.test;
+rename table db.test_mv to db_temp.test_mv;
+
+drop database db;
+rename database db_temp to db;
+
+use db;
+show tables;
+┌─name───────────────────────────────────────────┐
+│ .inner_id.37db402c-fc46-421d-b7db-402cfc46921d │
+│ test                                           │
+│ test_mv                                        │
+└────────────────────────────────────────────────┘
+
+insert into db.test select * from numbers(1000);
+
+select count() from test;
+┌─count()─┐
+│    2000 │
+└─────────┘
+
+select count() from test_mv;
+┌─count()─┐
+│    2000 │
+└─────────┘
+
+show create database db;
+┌─statement─────────────────────────┐
+│ CREATE DATABASE db
+ENGINE = Atomic │
+└───────────────────────────────────┘
+```