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Expand Minimize
本主題尚未接受評分 - 為這個主題評分

STUFF (Transact-SQL)

SQL Server 2005

刪除指定的字元長度，在指定的起點插入另一組字元。

主題連結圖示 Transact-SQL 語法慣例

複製 

STUFF ( character_expression , start , length ,character_expression )

character_expression

這是字元資料的運算式。character_expression 可以是字元或二進位資料的常數、變數或資料行。

start

這是一個開始刪除和插入之位置的整數值。如果 start 或 length 是負數，則會傳回空字串。如果 start 比第一個 character_expression 長，就會傳回 Null 字串。start 的類型可以是 bigint。

length

這是一個整數，指定要刪除的字元數。如果 length 長度超出第一個 character_expression，刪除動作就會進行到最後一個 character_expression 的最後一個字元。length 的類型可以是 bigint。

如果 character_expression 是支援的字元資料類型之一，就會傳回字元資料。如果 character_expression 是支援的二進位資料類型之一，就會傳回二進位資料。

如果產生的值大於傳回類型所支援的最大值，便會引發錯誤。

下列範例會傳回從第一個字串 (abcdef) 中，從位置 2 (b) 開始，刪除三個字元所建立的字元字串，且會在刪除點插入第二個字串。

複製 
SELECT STUFF('abcdef', 2, 3, 'ijklmn')
GO

以下為結果集： 

複製 
--------- 
aijklmnef 

(1 row(s) affected)
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(剩餘 1500 個字元)

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