Sql server 通过向主键不是最小值的列添加1来更新列

我基本上只是尝试在表的每一行中的一列中添加1，该列的主键不是最小值。我把代码放在下面。有人能帮我解释一下逻辑吗

    UPDATE MyTable
SET LineNumber = (case when TableID != min(TableID) then LineNumber + 1)
FROM MyTable

那怎么办

UPDATE MyTable SET LineNumber = LineNumber +1 WHERE TableID != MIN(TableID) FROM MyTable

---

你在找这样的东西吗

  update MyTable
    set LineNumber = LineNumber + 1
  where
    TableID > (SELECT MIN(TableID ) FROM MyTable)

---

你应该用where作为答案，但如果你真的想用case语句，你可以这样做

UPDATE
  MyTable
SET LineNumber = 

  CASE WHEN TableID = (SELECT MIN(TableID) MinID FROM MyTable) 
       THEN LineNumber
       ELSE LineNumber+ 1
  END
FROM
  MyTable;

UPDATE
  MyTable
SET LineNumber = 

  CASE WHEN TableID = (SELECT MIN(TableID) MinID FROM MyTable) 
       THEN LineNumber
       ELSE LineNumber+ 1
  END
FROM
  MyTable;