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  • OBJECT_ID 有哪些种类

    特别是在建表建存储过程的时候进场会写到:

    IF OBJECT_ID('Table_Test','U') IS NOT NULL
    DROP TABLE Table_Test

    这种方式代替了以往所使用的

    IF EXISTS (SELECT * FROM SYSOBJECTS WHERE NAME = 'Table_Test')
    DROP TABLE Table_Test

    第一段代码中的 U 可以省略不写, 这样系统就会检索所有的对象名称以找到对应的ID, 但是写出来就可以更加明确是哪一种类型,筛选的范围要小很多.
    以下列出全部 Object type (加粗的是比较常用的): 

    AF = Aggregate function (CLR)

    C = CHECK constraint

    D = DEFAULT (constraint or stand-alone)

    F = FOREIGN KEY constraint

    FN = SQL scalar function

    FS = Assembly (CLR) scalar-function

    FT = Assembly (CLR) table-valued function

    IF = SQL inline table-valued function

    IT = Internal table

    P = SQL Stored Procedure

    PC = Assembly (CLR) stored-procedure

    PG = Plan guide

    PK = PRIMARY KEY constraint

    R = Rule (old-style, stand-alone)

    RF = Replication-filter-procedure

    S = System base table

    SN = Synonym

    SQ = Service queue

    TA = Assembly (CLR) DML trigger

    TF = SQL table-valued-function

    TR = SQL DML trigger

    TT = Table type

    U = Table (user-defined)

    UQ = UNIQUE constraint

    V = View

    X = Extended stored procedure

    可以通过这个查询语句获取当前数据库中各个数据库表,视图,存储过程等数量。

    SELECT CASE TYPE
                   WHEN 'U'  THEN 'User Defined Tables'
                   WHEN 'V'  THEN 'View' 
                  WHEN 'S'  THEN 'System Tables'
                   WHEN 'IT' THEN 'Internal Tables'
                   WHEN 'P'  THEN 'Stored Procedures'
                   WHEN 'PC' THEN 'CLR Stored Procedures'
                   WHEN 'X'  THEN 'Extended Stored Procedures'
                   WHEN 'FN' THEN 'Scalar-valued Functions'
                   WHEN 'IF' THEN 'Table-valued Functions'
            END AS Objects,
            COUNT(*) AS Counts   
    FROM SYS.OBJECTS
    WHERE TYPE IN ('U','V','S','IT','P','PC','X','FN','IF')
    GROUP BY TYPE

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  • 原文地址:https://www.cnblogs.com/biwork/p/2849311.html
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