/** * @param conn Connection. * @param qry Query. * @param explain Explain. * @return Table. * @throws IgniteCheckedException */ private GridMergeTable createMergeTable( JdbcConnection conn, GridCacheSqlQuery qry, boolean explain) throws IgniteCheckedException { try { Session ses = (Session) conn.getSession(); CreateTableData data = new CreateTableData(); data.tableName = "T___"; data.schema = ses.getDatabase().getSchema(ses.getCurrentSchemaName()); data.create = true; if (!explain) { LinkedHashMap<String, ?> colsMap = qry.columns(); assert colsMap != null; ArrayList<Column> cols = new ArrayList<>(colsMap.size()); for (Map.Entry<String, ?> e : colsMap.entrySet()) { String alias = e.getKey(); GridSqlType t = (GridSqlType) e.getValue(); assert !F.isEmpty(alias); Column c = new Column(alias, t.type(), t.precision(), t.scale(), t.displaySize()); cols.add(c); } data.columns = cols; } else data.columns = planColumns(); return new GridMergeTable(data, ctx); } catch (Exception e) { U.closeQuiet(conn); throw new IgniteCheckedException(e); } }