DESCRIBE STREAM¶

描述为流指定的属性。

DESCRIBE 可以缩写为 DESC。

另请参阅：: DROP STREAM、ALTER STREAM、CREATE STREAM、SHOW STREAMS

语法¶

DESC[RIBE] STREAM <name>

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参数¶

name: 指定要描述的流的标识符。如果标识符包含空格或特殊字符，则整个字符串必须放在双引号内。放在双引号内的标识符也区分大小写。

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.

For example, you can use the pipe operator or RESULT_SCAN function to select specific columns from the SHOW command output or filter the rows.

When you refer to the output columns, use double-quoted identifiers for the column names. For example, to select the output column type, specify SELECT "type".

You must use double-quoted identifiers because the output column names for SHOW commands are in lowercase. The double quotes ensure that the column names in the SELECT list or WHERE clause match the column names in the SHOW command output that was scanned.

示例¶

创建示例流：

CREATE STREAM mystream ( ... );

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描述流中的列：

DESC STREAM mystream;

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