Update RMT table definitions to drop ZK path

Author: hodgesrm

using-s3-and-clickhouse/sql-11-create-s3-replicated.sql

@@ -16,7 +16,7 @@ CREATE TABLE IF NOT EXISTS test_local ON CLUSTER `{cluster}`
     `S` String,
     `D` Date
 )
-ENGINE = ReplicatedMergeTree('/clickhouse/{cluster}/tables/{shard}/{database}/test_local', '{replica}')
+ENGINE = ReplicatedMergeTree
 PARTITION BY D ORDER BY A;
 
 CREATE TABLE IF NOT EXISTS test ON CLUSTER `{cluster}`
@@ -29,7 +29,7 @@ CREATE TABLE IF NOT EXISTS test_s3_disk_local ON CLUSTER `{cluster}`
     `S` String,
     `D` Date
 )
-ENGINE = ReplicatedMergeTree('/clickhouse/{cluster}/tables/{shard}/{database}/test_s3_disk_local', '{replica}')
+ENGINE = ReplicatedMergeTree
 PARTITION BY D
 ORDER BY A
 SETTINGS storage_policy = 's3_disk_policy';
@@ -44,7 +44,7 @@ CREATE TABLE IF NOT EXISTS test_s3_disk_with_replica_local ON CLUSTER `{cluster}
     `S` String,
     `D` Date
 )
-ENGINE = ReplicatedMergeTree('/clickhouse/{cluster}/tables/{shard}/{database}/test_s3_disk_with_replica_local', '{replica}')
+ENGINE = ReplicatedMergeTree
 PARTITION BY D
 ORDER BY A
 SETTINGS storage_policy = 's3_disk_with_replica_policy';
@@ -59,7 +59,7 @@ CREATE TABLE IF NOT EXISTS test_s3_zero_copy_local ON CLUSTER `{cluster}`
     `S` String,
     `D` Date
 )
-ENGINE = ReplicatedMergeTree('/clickhouse/{cluster}/tables/{shard}/{database}/test_s3_zero_copy_local', '{replica}')
+ENGINE = ReplicatedMergeTree
 PARTITION BY D
 ORDER BY A
 SETTINGS storage_policy = 's3_zero_copy_policy', allow_remote_fs_zero_copy_replication=1;

using-s3-and-clickhouse/sql-11a-create-replicated.sql

@@ -0,0 +1,34 @@
+-- Script to demonstrate replicated table creation with and without ZK path. 
+DROP TABLE IF EXISTS demo ON CLUSTER `{cluster}` SYNC;
+
+DROP TABLE IF EXISTS old_demo ON CLUSTER `{cluster}` SYNC;
+
+-- Use an explicate path in ReplicatedMergeTree. 
+CREATE TABLE IF NOT EXISTS old_demo ON CLUSTER `{cluster}`
+(
+    `A` Int64,
+    `S` String,
+    `D` Date
+)
+ENGINE = ReplicatedMergeTree('/clickhouse/{cluster}/tables/{shard}/{database}/old_demo', '{replica}')
+PARTITION BY D ORDER BY A;
+
+-- Let the path argument in ReplicatedMergeTree default to path chosen by ClickHouse. 
+CREATE TABLE IF NOT EXISTS demo ON CLUSTER `{cluster}`
+(
+    `A` Int64,
+    `S` String,
+    `D` Date
+)
+ENGINE = ReplicatedMergeTree
+PARTITION BY D ORDER BY A;
+
+INSERT INTO demo VALUES(1, 'one', now());
+
+INSERT INTO demo VALUES(2, 'two', now());
+
+SET show_table_uuid_in_table_create_query_if_not_nil=1;
+
+SHOW CREATE TABLE demo FORMAT Vertical;
+
+SELECT database, name, uuid from system.tables where database=currentDatabase();