content: package com.alibaba.druid.bvt.sql.schemaStat;
  
  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.repository.SchemaRepository;
  import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
  import com.alibaba.druid.util.JdbcConstants;
  import junit.framework.TestCase;
  
  public class SchemaStatTest23 extends TestCase {
      public void test_schemaStat() throws Exception {
          SchemaRepository repository = new SchemaRepository(JdbcConstants.MYSQL);
  
          String sql = "with par_temp as (\n" +
                  " select a from sw001 where ds = '20230531'\n" +
                  ")\n" +
                  "SELECT * from (\n" +
                  " SELECT cast(b as BIGINT) as b \n" +
                  " from sw002 where ds = '20230531'\n" +
                  ")sw2 LEFT join par_temp sw004\n" +
                  "on sw004.a = sw2.b";
  
          SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, JdbcConstants.MYSQL);
          SQLStatement stmt = parser.parseStatementList().get(0);
  
          SchemaStatVisitor statVisitor = SQLUtils.createSchemaStatVisitor(repository);
          stmt.accept(statVisitor);
  
          System.out.println("Tables : " + statVisitor.getTables());
          System.out.println("columns : " + statVisitor.getColumns());
  //        System.out.println(statVisitor.getGroupByColumns()); // group by
          System.out.println("relationships : " + statVisitor.getRelationships()); // group by
          System.out.println(statVisitor.getConditions());
  
          assertEquals(5, statVisitor.getColumns().size());
          assertEquals(4, statVisitor.getConditions().size());
          assertEquals(0, statVisitor.getFunctions().size());
  //
  //        assertTrue(statVisitor.containsTable("table1"));
  //        assertTrue(statVisitor.containsColumn("table1", "*"));
  //        assertTrue(statVisitor.containsColumn("table1", "id"));
  //        assertTrue(statVisitor.containsColumn("table2", "id"));
  //        assertTrue(statVisitor.containsColumn("table2", "*"));
      }
  }
  