fixed small parser issue in ANTLR4

Author: chernser

CHANGELOG.md

@@ -18,6 +18,7 @@ To use it set `com.clickhouse.jdbc.DriverProperties#SQL_PARSER` to `ANTLR4`.
   - https://github.com/ClickHouse/clickhouse-java/issues/2572
   - https://github.com/ClickHouse/clickhouse-java/issues/2573
   - https://github.com/ClickHouse/clickhouse-java/issues/2609
+  - https://github.com/ClickHouse/clickhouse-java/issues/2527
 
 - [repo] New artifact `clickhouse-jdbc-all` added to address issue when maven package qualifiers may not be used. 
 This artifact should is a copy of `clickhouse-jdbc:all` but should be used only when required. (https://github.com/ClickHouse/clickhouse-java/issues/2625) 

jdbc-v2/src/main/antlr4/com/clickhouse/jdbc/internal/parser/antlr4/ClickHouseParser.g4

@@ -1369,6 +1369,7 @@ keyword
     | SHOW
     | SOURCE
     | START
+    | STATISTICS
     | STOP
     | SUBSTRING
     | SYNC
@@ -1439,6 +1440,8 @@ keywordForAlias
     | MINUTE
     | SECOND
     | REVOKE
+    | URL
+    | STATISTICS
     ;
 
 alias

jdbc-v2/src/test/java/com/clickhouse/jdbc/internal/BaseSqlParserFacadeTest.java

@@ -581,6 +581,8 @@ public static Object[][] testStatementWithoutResultSetDP() {
                 {"CREATE QUOTA qB FOR INTERVAL 30 minute MAX execution_time = 0.5, FOR INTERVAL 5 quarter MAX queries = 321, errors = 10 TO default", 0, false},
                 {"CREATE SETTINGS PROFILE max_memory_usage_profile SETTINGS max_memory_usage = 100000001 MIN 90000000 MAX 110000000 TO robin", 0, false},
                 {"CREATE NAMED COLLECTION foobar AS a = '1', b = '2' OVERRIDABLE", 0, false},
+                {"CREATE TABLE IF NOT EXISTS statistics.vast_event_v2 (ip UInt32, url String) ENGINE = ReplacingMergeTree()", 0, false},
+                {"CREATE TABLE IF NOT EXISTS `statistics`.vast_event_v2 (ip UInt32, url String) ENGINE = ReplacingMergeTree()", 0, false},
                 {"alter table t2 alter column v type Int32", 0, false},
                 {"alter table t alter column j default 1", 0, false},
                 {"ALTER TABLE t MODIFY COLUMN j default 1", 0, false},