DESCRIBE SCHEMA¶

描述架构。例如，列出架构中的表和视图。

DESCRIBE 可以缩写为 DESC。

另请参阅：

ALTER SCHEMA、CREATE SCHEMA、DROP SCHEMA、SHOW SCHEMAS、UNDROP SCHEMA

语法¶

DESC[RIBE] SCHEMA <schema_name>

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参数¶

schema_name: 指定要描述的架构的 :doc:` 标识符 </sql-reference/identifiers>`。

使用说明¶

To post-process the output of this command, you can use the pipe operator (->>) or the RESULT_SCAN function. Both constructs treat the output as a result set that you can query.

The output column names for this command are generated in lowercase. If you consume a result set from this command with the pipe operator or the RESULT_SCAN function, use double-quoted identifiers for the column names in the query to ensure that they match the column names in the output that was scanned. For example, if the name of an output column is type, then specify "type" for the identifier.

示例¶

此示例演示了 DESCRIBE SCHEMA 命令：

CREATE SCHEMA sample_schema_2;
USE SCHEMA sample_schema_2;

CREATE TABLE sample_table_1 (i INTEGER);

CREATE VIEW sample_view_1 AS
    SELECT i FROM sample_table_1;

CREATE MATERIALIZED VIEW sample_mview_1 AS
    SELECT i FROM sample_table_1 WHERE i < 100;

DESCRIBE SCHEMA sample_schema_2;

+-------------------------------+----------------+-------------------+
| created_on                    | name           | kind              |
|-------------------------------+----------------+-------------------|
| 2022-06-23 01:00:00.000 -0700 | SAMPLE_TABLE_1 | TABLE             |
| 2022-06-23 02:00:00.000 -0700 | SAMPLE_VIEW_1  | VIEW              |
| 2022-06-23 03:00:00.000 -0700 | SAMPLE_MVIEW_1 | MATERIALIZED_VIEW |
+-------------------------------+----------------+-------------------+

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