cloud-fan commented on a change in pull request #30888:
URL: https://github.com/apache/spark/pull/30888#discussion_r547654132
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File path: docs/sql-ref-syntax-dml-insert-into.md
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@@ -40,11 +40,20 @@ INSERT INTO [ TABLE ] table_identifier [ partition_spec ]
* **partition_spec**
- An optional parameter that specifies a comma separated list of key and
value pairs
+ An optional parameter that specifies a comma-separated list of key and
value pairs
for partitions.
**Syntax:** `PARTITION ( partition_col_name = partition_col_val [ , ... ]
)`
+* **column_list**
+
+ An optional parameter that specifies a comma-separated list of columns
belonging to the `table_identifier` table.
+
+ **Note:**The current behaviour has some limitations:
+ - All specified columns should exist in the table and not be duplicated
from each other. It includes all columns except the static partition columns.
+ - The size of the column list should be exactly the size of the data from
`VALUES` clause or query.
+ - The order of the column list is alterable and determines how the data
from `VALUES` clause or query to be inserted by position.
Review comment:
is it a limitation?
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