content: package com.alibaba.druid.bvt.sql.postgresql.issues;
  
  import com.alibaba.druid.DbType;
  import com.alibaba.druid.sql.ast.SQLExpr;
  import com.alibaba.druid.sql.ast.SQLOrderBy;
  import com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr;
  import com.alibaba.druid.sql.dialect.postgresql.ast.stmt.PGSelectStatement;
  import com.alibaba.druid.sql.parser.SQLParserFeature;
  import com.alibaba.druid.sql.parser.SQLParserUtils;
  import com.alibaba.druid.sql.parser.SQLStatementParser;
  import org.junit.Test;
  
  import static org.junit.Assert.assertEquals;
  
  /**
   * 验证 Postgresql 没有解析行号的问题 #5287
   *
   * @author lizongbo
   * @see <a href="https://github.com/alibaba/druid/issues/5287">增强 #5287</a>
   */
  public class Issue5287 {
      @Test
      public void test_get_source_location() throws Exception {
          for (DbType dbType : new DbType[]{DbType.postgresql}) {
              String sql =
                  "select * from t1 \n"
                      + " where a=1 \n"
                      + " and b =2 \n"
                      + " order by c desc;";
              SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, dbType);
              PGSelectStatement statement = (PGSelectStatement) parser.parseStatement();
              SQLOrderBy orderBy = statement.getSelect().getQueryBlock().getOrderBy();
              SQLExpr cExpr = orderBy.getItems().get(0).getExpr();
              SQLIdentifierExpr si = (SQLIdentifierExpr) cExpr;
              int sourceLine1 = si.getSourceLine();
              System.out.println(" statement.getSourceLine()===" + orderBy.getSourceLine() + "||" + sourceLine1);
              assertEquals(0, sourceLine1);
              parser = SQLParserUtils.createSQLStatementParser(sql, dbType, SQLParserFeature.KeepSourceLocation);
              statement = (PGSelectStatement) parser.parseStatement();
              orderBy = statement.getSelect().getQueryBlock().getOrderBy();
              cExpr = orderBy.getItems().get(0).getExpr();
              si = (SQLIdentifierExpr) cExpr;
              int sourceLine2 = si.getSourceLine();
              System.out.println(" statement.getSourceLine()===" + orderBy.getSourceLine() + "||" + sourceLine2);
              assertEquals(4, sourceLine2);
  
          }
      }
  }
  