Sql server 如何使用序列只插入唯一的数字？

我正在使用托盘，它们的ID从10000000到15000000不等。这种方法每年循环几次，目前的解决方案是使用一个带有当前

托盘id

的表，该表带有一个触发器，该触发器将在15000000重置回10000000，通常这不是一个问题，因为在发生这种情况时，所有数字都将再次可用。这现在是一个问题，也是一个问题

我一直在考虑使用

SEQUENCE

，而不是将这个额外的表与触发器一起使用

到目前为止，我得出的结论是：

sp\u计数器下一个值

CREATE SEQUENCE [Database].sp_Counter_NextValue
AS int
START WITH 10000000
INCREMENT BY 1
MINVALUE 10000000
MAXVALUE 15000000
CYCLE

CREATE SEQUENCE [dbo].[SEQ_PALLET] 
    AS [bigint]
    START WITH 10010341
    INCREMENT BY 1
    MINVALUE 10000000
    MAXVALUE 15000000
    CYCLE 
    CACHE 
GO

CREATE SEQUENCE [dbo].[SEQ_PICK_PALLET] 
    AS [bigint]
    START WITH 5541980
    INCREMENT BY 1
    MINVALUE 1000000
    MAXVALUE 9999999
    CYCLE 
    CACHE 
GO

ALTER PROCEDURE [dbo].[sp_Counter_NextValue]
    @name nvarchar(24)
AS
BEGIN
    SET NOCOUNT ON; 
    declare @value bigint

    IF @name = 'PALLET'
    BEGIN       
        SELECT @value = NEXT VALUE FOR SEQ_PALLET
    END
    ELSE IF @name = 'PICK_PALLET'
    BEGIN
        SELECT @value = NEXT VALUE FOR SEQ_PICK_PALLET
    END

    SELECT @value as VALUE
    RETURN @value
END

插入

INSERT INTO X_PALLETS (sp_Counter_NextValue, information)

---

例如，当计数器达到其最大值时，X_托盘中存在10000000个数字时，我如何跳过该数字？

这是最终的解决方案

序列

CREATE SEQUENCE [Database].sp_Counter_NextValue
AS int
START WITH 10000000
INCREMENT BY 1
MINVALUE 10000000
MAXVALUE 15000000
CYCLE

CREATE SEQUENCE [dbo].[SEQ_PALLET] 
    AS [bigint]
    START WITH 10010341
    INCREMENT BY 1
    MINVALUE 10000000
    MAXVALUE 15000000
    CYCLE 
    CACHE 
GO

CREATE SEQUENCE [dbo].[SEQ_PICK_PALLET] 
    AS [bigint]
    START WITH 5541980
    INCREMENT BY 1
    MINVALUE 1000000
    MAXVALUE 9999999
    CYCLE 
    CACHE 
GO

ALTER PROCEDURE [dbo].[sp_Counter_NextValue]
    @name nvarchar(24)
AS
BEGIN
    SET NOCOUNT ON; 
    declare @value bigint

    IF @name = 'PALLET'
    BEGIN       
        SELECT @value = NEXT VALUE FOR SEQ_PALLET
    END
    ELSE IF @name = 'PICK_PALLET'
    BEGIN
        SELECT @value = NEXT VALUE FOR SEQ_PICK_PALLET
    END

    SELECT @value as VALUE
    RETURN @value
END

存储过程

CREATE SEQUENCE [Database].sp_Counter_NextValue
AS int
START WITH 10000000
INCREMENT BY 1
MINVALUE 10000000
MAXVALUE 15000000
CYCLE

CREATE SEQUENCE [dbo].[SEQ_PALLET] 
    AS [bigint]
    START WITH 10010341
    INCREMENT BY 1
    MINVALUE 10000000
    MAXVALUE 15000000
    CYCLE 
    CACHE 
GO

CREATE SEQUENCE [dbo].[SEQ_PICK_PALLET] 
    AS [bigint]
    START WITH 5541980
    INCREMENT BY 1
    MINVALUE 1000000
    MAXVALUE 9999999
    CYCLE 
    CACHE 
GO

ALTER PROCEDURE [dbo].[sp_Counter_NextValue]
    @name nvarchar(24)
AS
BEGIN
    SET NOCOUNT ON; 
    declare @value bigint

    IF @name = 'PALLET'
    BEGIN       
        SELECT @value = NEXT VALUE FOR SEQ_PALLET
    END
    ELSE IF @name = 'PICK_PALLET'
    BEGIN
        SELECT @value = NEXT VALUE FOR SEQ_PICK_PALLET
    END

    SELECT @value as VALUE
    RETURN @value
END

---

我不认为你可以用序列来做这件事。您可以定义

唯一

约束，并导致

插入失败，然后重试，直到成功。或者，您可以使用一个触发器来递增序列直到成功，但我认为您不能自动执行此操作。@GordonLinoff我很担心这一点。如果您使用
IDENTITY
但试图插入现有ID，或者将您的标识种子改为在现有值之前启动，您也会遇到同样的问题。为什么不为序列使用BIGINT并在任何现有值之后开始？X_托盘是否只包含活动记录，即托盘ID在处理后从表中删除？@目标数据是。