[ https://issues.apache.org/jira/browse/CALCITE-2955?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
leesf updated CALCITE-2955: --------------------------- Summary: SQL queries after first query in same statement have no results returned (was: SQL queries after first query in same statement have no results) > SQL queries after first query in same statement have no results returned > ------------------------------------------------------------------------ > > Key: CALCITE-2955 > URL: https://issues.apache.org/jira/browse/CALCITE-2955 > Project: Calcite > Issue Type: Bug > Components: core > Affects Versions: 1.18.0 > Reporter: leesf > Assignee: leesf > Priority: Major > Fix For: 1.19.0 > > > When integrate avatica with calcite, when using same statement, except for > the first sql query, other sql queries have no result to return. > The following example > {code:java} > private static void testMultiQueryWithSameStatement(Connection connection) > throws Exception { > // get avatica remote connection > Connection connection = getRemoteConnection(); > String sql = "select * from mysql.jobs"; > ResultSet rs; > Statement st; > st = connection.createStatement(); > System.out.println("============================first > query====================================="); > rs = st.executeQuery(sql); > ResultSetMetaData rsmd = rs.getMetaData(); > int columnNum = rsmd.getColumnCount(); > for (int i = 1; i <= columnNum; i++) { > System.out.print(rsmd.getColumnName(i) + "\t"); > } > System.out.println(); > while (rs.next()) { > for (int i = 1; i <= columnNum; i++) { > System.out.print(rs.getString(i) + "\t"); > } > System.out.println(); > } > System.out.println("============================second > query====================================="); > rs = st.executeQuery(sql); > while (rs.next()) { > for (int i = 1; i <= columnNum; i++) { > System.out.print(rs.getString(i) + "\t"); > } > System.out.println(); > } > } > {code} > The result would be like this. The first query has result while the second > query has no result returned. > {code:java} > ============================first query===================================== > id name > 1 abc > ============================second query===================================== > {code} > What's more, use avatica alone and don't integrate with calcite, then query > sql twice will return normal results. -- This message was sent by Atlassian JIRA (v7.6.3#76005)