| layout | global |
|---|---|
| title | current_path function |
| displayTitle | current_path function |
| license | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. |
Returns the effective SQL Path for the current session as a comma-separated string of
qualified namespace names. See SET PATH for a
description of what the path is, how to enable it, and how to change it, and
Name Resolution for how the path drives unqualified name
resolution.
current_path()This function takes no arguments. The parentheses may be omitted.
A non-nullable STRING. Each path entry is written as a dotted name with backticks added only
where required by Spark's identifier rules. Entries are separated by a single comma.
When the path contains the virtual CURRENT_SCHEMA marker, the marker is materialized as the
catalog-qualified current schema (current_catalog.current_schema) each time
current_path() is evaluated, so subsequent USE SCHEMA statements are reflected without
re-issuing SET PATH.
> SELECT current_path();
system.builtin,system.session,spark_catalog.default
-- ANSI no-parens form returns the same value.
> SELECT CURRENT_PATH;
system.builtin,system.session,spark_catalog.default
-- The output reflects the latest SET PATH.
> SET PATH = spark_catalog.default, system.builtin;
> SELECT current_path();
spark_catalog.default,system.builtin
-- CURRENT_SCHEMA on the path is re-evaluated on every call.
> SET PATH = CURRENT_SCHEMA, system.builtin;
> USE spark_catalog.finance;
> SELECT current_path();
spark_catalog.finance,system.builtin
> USE spark_catalog.default;
> SELECT current_path();
spark_catalog.default,system.builtin
-- Inside a persistent view or SQL function body, current_path() returns the invoker's path,
-- not the frozen path captured at creation time.
> SET PATH = spark_catalog.default, system.builtin;
> CREATE VIEW v_path AS SELECT current_path() AS p;
> SET PATH = spark_catalog.other, system.builtin;
> SELECT * FROM v_path;
spark_catalog.other,system.builtin