Github user arina-ielchiieva commented on a diff in the pull request: https://github.com/apache/drill/pull/666#discussion_r94760594 --- Diff: exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/handlers/DropTableHandler.java --- @@ -55,35 +58,79 @@ public DropTableHandler(SqlHandlerConfig config) { */ @Override public PhysicalPlan getPlan(SqlNode sqlNode) throws ValidationException, RelConversionException, IOException { - SqlDropTable dropTableNode = ((SqlDropTable) sqlNode); - SqlIdentifier tableIdentifier = dropTableNode.getTableIdentifier(); - + String originalTableName = dropTableNode.getName(); SchemaPlus defaultSchema = config.getConverter().getDefaultSchema(); - AbstractSchema drillSchema = null; + List<String> tableSchema = dropTableNode.getSchema(); + + boolean removedTemporaryTable = removeTemporaryTable(defaultSchema, tableSchema, originalTableName); + // if table to be dropped is not temporary table, we need to check among persistent tables or views + if (!removedTemporaryTable) { + AbstractSchema drillSchema = SchemaUtilites.resolveToMutableDrillSchema(defaultSchema, tableSchema); + Table tableToDrop = SqlHandlerUtil.getTableFromSchema(drillSchema, originalTableName); + if (tableToDrop == null || tableToDrop.getJdbcTableType() != Schema.TableType.TABLE) { + if (dropTableNode.checkTableExistence()) { --- End diff -- `checkTableExistence()` is indication for `IF EXISTS` clause in drop command statement. Ex: `drop table dfs.tmp.foo` vs `drop table if exists dfs.tmp.foo` If `IF EXISTS` clause is present, drop command will return result saying 'Table not found' to the user if table to be dropped doesn't exist, otherwise error is thrown.
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