content: package com.alibaba.druid.bvt.sql;
  
  import com.alibaba.druid.DbType;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.ast.statement.SQLAlterTableStatement;
  import com.alibaba.druid.sql.parser.SQLParserUtils;
  import com.alibaba.druid.sql.parser.SQLStatementParser;
  import com.alibaba.druid.sql.repository.SchemaRepository;
  import org.junit.Test;
  
  import static org.junit.Assert.assertNotNull;
  
  public class SchemaTest {
      @Test
      public void test_schema() {
          SchemaRepository repository = new SchemaRepository(DbType.gaussdb);
          repository.acceptDDL("create table test.test(a int) partition by list (dt) (partition p1 values(20251111))");
          String sql = "alter table test.test truncate partition for (to_date('${day}')-1);";
          SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, DbType.gaussdb);
          SQLStatement sqlStatement = parser.parseStatement();
          repository.accept(sqlStatement);
          assertNotNull(((SQLAlterTableStatement) sqlStatement).getTableSource().getSchemaObject());
      }
  }
  