spark-instrumented-optimizer/docs/sql-ref-syntax-qry.md
GuoPhilipse 8de43338be [SPARK-31753][SQL][DOCS] Add missing keywords in the SQL docs
### What changes were proposed in this pull request?
update sql-ref docs, the following key words will be added in this PR.

CASE/ELSE
WHEN/THEN
MAP KEYS TERMINATED BY
NULL DEFINED AS
LINES TERMINATED BY
ESCAPED BY
COLLECTION ITEMS TERMINATED BY
PIVOT
LATERAL VIEW OUTER?
ROW FORMAT SERDE
ROW FORMAT DELIMITED
FIELDS TERMINATED BY
IGNORE NULLS
FIRST
LAST

### Why are the changes needed?
let more users know the sql key words usage

### Does this PR introduce _any_ user-facing change?
![image](https://user-images.githubusercontent.com/46367746/88148830-c6dc1f80-cc31-11ea-81ea-13bc9dc34550.png)
![image](https://user-images.githubusercontent.com/46367746/88148968-fb4fdb80-cc31-11ea-8649-e8297cf5813e.png)
![image](https://user-images.githubusercontent.com/46367746/88149000-073b9d80-cc32-11ea-9aa4-f914ecd72663.png)
![image](https://user-images.githubusercontent.com/46367746/88149021-0f93d880-cc32-11ea-86ed-7db8672b5aac.png)

### How was this patch tested?
No

Closes #29056 from GuoPhilipse/add-missing-keywords.

Lead-authored-by: GuoPhilipse <guofei_ok@126.com>
Co-authored-by: GuoPhilipse <46367746+GuoPhilipse@users.noreply.github.com>
Signed-off-by: Takeshi Yamamuro <yamamuro@apache.org>
2020-07-28 09:41:53 +09:00

2.6 KiB

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Spark supports SELECT statement that is used to retrieve rows from one or more tables according to the specified clauses. The full syntax and brief description of supported clauses are explained in SELECT section. The SQL statements related to SELECT are also included in this section. Spark also provides the ability to generate logical and physical plan for a given query using EXPLAIN statement.