diff --git a/qqq-backend-module-rdbms/src/main/java/com/kingsrook/qqq/backend/module/rdbms/actions/RDBMSQueryAction.java b/qqq-backend-module-rdbms/src/main/java/com/kingsrook/qqq/backend/module/rdbms/actions/RDBMSQueryAction.java index fc5dfa79..36d23362 100644 --- a/qqq-backend-module-rdbms/src/main/java/com/kingsrook/qqq/backend/module/rdbms/actions/RDBMSQueryAction.java +++ b/qqq-backend-module-rdbms/src/main/java/com/kingsrook/qqq/backend/module/rdbms/actions/RDBMSQueryAction.java @@ -53,7 +53,6 @@ import com.kingsrook.qqq.backend.core.model.metadata.tables.QTableMetaData; import com.kingsrook.qqq.backend.core.utils.CollectionUtils; import com.kingsrook.qqq.backend.core.utils.Pair; import com.kingsrook.qqq.backend.module.rdbms.jdbc.QueryManager; -import com.kingsrook.qqq.backend.module.rdbms.model.metadata.RDBMSBackendMetaData; /******************************************************************************* @@ -343,15 +342,14 @@ public class RDBMSQueryAction extends AbstractRDBMSAction implements QueryInterf *******************************************************************************/ private PreparedStatement createStatement(Connection connection, String sql, QueryInput queryInput) throws SQLException { - RDBMSBackendMetaData backend = (RDBMSBackendMetaData) queryInput.getBackend(); - PreparedStatement statement; - if("mysql".equals(backend.getVendor())) + PreparedStatement statement; + if(connection.getClass().getName().startsWith("com.mysql")) { - ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// - // mysql "optimization", presumably here - from Result Set section of https://dev.mysql.com/doc/connector-j/8.0/en/connector-j-reference-implementation-notes.html // - // without this change, we saw ~10 seconds of "wait" time, before results would start to stream out of a large query (e.g., > 1,000,000 rows). // - // with this change, we start to get results immediately, and the total runtime also seems lower... // - ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// + // mysql "optimization", presumably here - from Result Set section of https://dev.mysql.com/doc/connector-j/en/connector-j-reference-implementation-notes.html // + // without this change, we saw ~10 seconds of "wait" time, before results would start to stream out of a large query (e.g., > 1,000,000 rows). // + // with this change, we start to get results immediately, and the total runtime also seems lower... // + ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// statement = connection.prepareStatement(sql, ResultSet.TYPE_FORWARD_ONLY, ResultSet.CONCUR_READ_ONLY); statement.setFetchSize(Integer.MIN_VALUE); }