content: package com.alibaba.druid.bvt.sql.mysql.issues;
  
  import com.alibaba.druid.DbType;
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.parser.SQLParserUtils;
  import com.alibaba.druid.sql.parser.SQLStatementParser;
  import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
  import com.alibaba.druid.stat.TableStat;
  import org.junit.Test;
  
  import java.util.Map;
  
  import static org.junit.Assert.assertFalse;
  
  public class Issue4454 {
      protected final DbType dbType = DbType.mysql;
  
      @Test
      public void test_idle2() throws Exception {
          String sql = "CREATE TABLE `test_trigger` (\n" +
                  "  `id` bigint(20) unsigned NOT NULL AUTO_INCREMENT COMMENT 'trigger id',\n" +
                  "  `test` int(11) signed NOT NULL DEFAULT '0' COMMENT 'trigger test',\n" +
                  "  PRIMARY KEY (`id`)\n" +
                  ") ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;";
          SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, dbType);
          SQLStatement stmt = parser.parseStatement();
          SchemaStatVisitor visitor = SQLUtils.createSchemaStatVisitor(dbType);
  
          stmt.accept(visitor);
          Map<TableStat.Name, TableStat> tableMap = visitor.getTables();
          assertFalse(tableMap.isEmpty());
      }
  }
  