Describes the VALUE column and virtual columns in an external table.
DESCRIBE can be abbreviated to DESC.
Syntax¶DESC[RIBE] [ EXTERNAL ] TABLE <name> [ TYPE = { COLUMNS | STAGE } ]
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Parameters¶name
Specifies the identifier for the external table to describe. If the identifier contains spaces or special characters, the entire string must be enclosed in double quotes. Identifiers enclosed in double quotes are also case sensitive.
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.
Create an example external table:
CREATE EXTERNAL TABLE emp ( ... );Copy
Describe the columns in the table:
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