content: package com.alibaba.druid.bvt.sql.mysql.issues;
  
  import com.alibaba.druid.DbType;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.parser.SQLParserUtils;
  import com.alibaba.druid.sql.parser.SQLStatementParser;
  import org.junit.Test;
  
  import java.util.List;
  
  import static org.junit.Assert.assertEquals;
  
  /**
   * @author lizongbo
   * @see <a href="https://github.com/alibaba/druid/issues/5803>Issue来源</a>
   * @see <a href="https://dev.mysql.com/doc/refman/8.0/en/invisible-indexes.html">Invisible Indexes</a>
   * @see <a href="https://dev.mysql.com/doc/refman/8.0/en/alter-table.html">ALTER TABLE Statement</a>
   */
  public class Issue5803 {
      @Test
      public void test_parse_alter_table() {
          for (DbType dbType : new DbType[]{
              DbType.mysql,
              DbType.mariadb,
  
          }) {
              for (String sql : new String[]{
                  "ALTER TABLE t1 ALTER INDEX i_idx INVISIBLE;",
                  "ALTER TABLE t1 ALTER INDEX i_idx VISIBLE;",
                  "ALTER TABLE t2 ALTER INDEX j_idx INVISIBLE;",
                  "ALTER TABLE t2 ALTER INDEX j_idx INVISIBLE;",
                  "alter table tt ALTER COLUMN c1 SET VISIBLE;",
                  "alter table tt ALTER COLUMN c1 SET INVISIBLE;",
              }) {
                  System.out.println(dbType + "原始的sql===" + sql);
                  SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, dbType);
                  List<SQLStatement> statementList = parser.parseStatementList();
                  String sqlGen = statementList.toString();
                  System.out.println(dbType + "生成的sql===" + sqlGen);
                  StringBuilder sb = new StringBuilder();
                  for (SQLStatement statement : statementList) {
                      sb.append(statement.toString()).append(";");
                  }
                  sb.deleteCharAt(sb.length() - 1);
                  parser = SQLParserUtils.createSQLStatementParser(sb.toString(), dbType);
                  List<SQLStatement> statementListNew = parser.parseStatementList();
                  String sqlGenNew = statementList.toString();
                  System.out.println(dbType + "重新解析再生成的sql===" + sqlGenNew);
                  assertEquals(statementList.toString(), statementListNew.toString());
              }
          }
      }
  }
  