無論查詢中的 where 子句如何，如何從表中獲取 max(column_name)？

Question

我需要將數據插入表中，其中一列是 seq_number。 我在 select 查詢中有一個 where 子句，我想為要插入的每條記錄插入 max(seq_num)+1。 seq_num 的最大值給了我 where 子句的最大值，而不是表中的實際最大值。

INSERT INTO TABLE_NAME 
SELECT
    NEWID(),
    MAX(SEQ_ORD_R)+1,  -- This should be the max from table irrespective of the where clause
    CURRENT_TIMESTAMP,
    CURRENT_TIMESTAMP
FROM TABLE_NAME
WHERE SOFA_K = 'FD5B6BE8-F1CF-42C0-9216-B13163413F96'

Answer 1

SELECT MAX(SEQ_ORD_R) FROM TABLE_NAME INTO @K;
INSERT INTO TABLE_NAME 
SELECT
    NEWID(),
    (SELECT @K := @K+1),
    CURRENT_TIMESTAMP,
    CURRENT_TIMESTAMP
FROM TABLE_NAME
WHERE SOFA_K = 'FD5B6BE8-F1CF-42C0-9216-B13163413F96'

Answer 2

INSERT INTO TABLE_NAME 
SELECT
    NEWID(),
    max_seq_r+row_number() over (partition by 1 order by max_seq_r),  -- This should be the max from table irrespective of the where clause
    CURRENT_TIMESTAMP,
    CURRENT_TIMESTAMP
FROM TABLE_NAME A inner join 
(select max(SEQ_ORD_R) as max_seq_r from TABLE_NAME) B on 1=1
WHERE SOFA_K = 'xyz'