如果SP的参数有默认值,有没有办法从SQL Server(我是2012年FYI)中确定?这里有other threads,但这些建议似乎并没有准确地告诉我这些信息。
以下是我尝试的一些事情;
select *
from sys.objects so join sys.parameters sp on so.object_id = sp.object_id
where so.type='P'
and so.name = 'someSp'
上面的查询返回了一些声音,好像我正在咆哮着正确的树(has_default_value,default_value)但是这些似乎没有变化我是否有默认值在我的SP或不。 (has_default值始终为0,default_value始终为null)
exec sp_sproc_columns 'someSp'
相同的交易;上面的SP返回多个列,包括NULLABLE和IS_NULLABLE;无论我的SP内容如何,NULLABLE始终等于1且IS_NULLABLE = YES。
一张纸条; SQL Server管理工作室清楚地显示与每个SP参数关联的元数据。
我使用SQL事件探查器来检查在Management Studio的对象资源管理器中查看SP的参数时会发生什么。展开参数文件夹时,会运行两个查询。第一个查询在这里粘贴有点长(虽然如果有帮助我会这样做)。它包含一个名为DEFAULT VALUE的列;但据我所知,它总是为NULL。第二个查询只返回SP的主体;大概是输出到文本编辑器窗口(虽然我担心在mgmt studio中可能会发生一些解析!)
作为参考/只是为了确保我没有丢失我的弹珠我已经创建了两个无意义的Sps仅用于测试。他们看起来像:
CREATE PROCEDURE TestDefaultSpValue_Default
@I INT = 2
AS
BEGIN
SET NOCOUNT ON;
SELECT @I
END
CREATE PROCEDURE TestDefaultSpValue_NoDefault
@I INT
AS
BEGIN
SET NOCOUNT ON;
SELECT @I
END
答案 0 :(得分:3)
如果参数名称具有“AS”符号 - 则不起作用 试试我的
create procedure ViewParameters
@procedure varchar(50)
as
declare
@w varchar(max),
@p int, @p2 int,
@t varchar(max)
/* Andrey Rubanko 18 jul 2013 */
/* fill temporary table with procedure body */
select @w = definition
from sys.sql_modules
where object_id = object_id(@procedure)
declare @lines table (line varchar(500), id int identity(1, 1))
while len(@w) > 0 begin
set @p = charindex(char(10), @w)
if @p > 0 begin
insert @lines(line) values(replace(replace(SUBSTRING(@w, 1, @p - 1), char(13), ''), char(9), ' '))
set @w = SUBSTRING(@w, @p + 1, 10000)
end else begin
insert @lines(line) values(replace(@w, char(13), ''))
set @w = ''
end
end
/* remove comments */
declare
@i int,
@inCommentNow bit,
@again bit
set @i = 1
set @inCommentNow = 0
while @i <= (select max(id) from @lines) begin
select @w = line from @lines where id = @i
set @again = 0
if @inCommentNow = 0 begin
set @p = patindex('%--%', @w)
if @p > 0 begin
set @w = SUBSTRING(@w, 1, @p - 1)
update @lines
set line = @w
where id = @i
end
set @p = patIndex('%/*%', @w)
if @p > 0 begin
set @p2 = PATINDEX('%*/%', @w)
if @p2 > 0 begin
update @lines
set line = substring(@w, 1, @p - 1) + SUBSTRING(@w, @p2 + 2, 10000)
where id = @i
set @again = 1
end else begin
set @inCommentNow = 1
update @lines
set line = SUBSTRING(@w, 1, @p - 1)
where id = @i
end
end
end
if @inCommentNow = 1 begin
set @p = PATINDEX('%*/%', @w)
if @p > 0 begin
update @lines
set line = SUBSTRING(@w, @p + 2, 10000)
where id = @i
set @inCommentNow = 0
set @again = 1
end else
update @lines
set line = ''
where id = @i
end
if @again = 0
set @i = @i + 1
end
/* remove all except parameters */
declare
@first int,
@last int
set @i = 1
while @last is null begin
select @w = line from @lines where id = @i
if SUBSTRING(@w, 1, 2) = 'as'
set @last = @i - 1
set @p = PATINDEX('% as%', @w)
if @last is null and @p > 0 begin
set @w = SUBSTRING(@w, 1, @p - 1)
update @lines
set line = @w
where id = @i
if charindex('@', @w) > 0
set @last = @i
else
set @last = @i - 1
end
set @p = CHARINDEX('@', @w)
if @first is null and @p > 0 begin
set @first = @i
set @w = SUBSTRING(@w, @p, 10000)
end
set @i = @i + 1
end
delete @lines
where @first is null
or id < @first
or id > @last
/* decode lines to paramters */
declare @par table (ParameterName varchar(50), ParameterType varchar(50), DefaultValue varchar(50))
declare
@name varchar(50),
@type varchar(50),
@default varchar(50)
declare c cursor for
select line
from @lines
open c
fetch next from c into @w
while @@FETCH_STATUS = 0 begin
while len(@w) > 0 begin
set @default = null
set @w = SUBSTRING(@w, charindex('@', @w) + 1, 10000)
set @p = CHARINDEX(',', @w)
print 'start:' + @w
if @p > 0 begin
set @t = SUBSTRING(@w, 1, @p - 1)
set @w = LTrim(RTrim(SUBSTRING(@w, @p + 1, 10000)))
end else begin
set @p = patindex('% as%', @w)
if @p > 0
set @t = SUBSTRING(@w, 1, @p - 1)
else
set @t = @w
set @w = ''
end
print 'T=' + @t
set @p = charindex(' ', @t)
if @p = 0
print 'NameError:' + @t + ' ->' + cast(@p as varchar)
set @name = SUBSTRING(@t, 1, @p - 1)
set @t = SUBSTRING(@t, @p + 1, 10000)
set @p = CHARINDEX('=', @t)
if @p > 0 begin
set @default = Replace(LTrim(RTrim(SUBSTRING(@t, @p + 1, 10000))), '''', '')
set @t = SUBSTRING(@t, 1, @p - 1)
end
set @p = CHARINDEX('(', @t)
if @p > 0
set @type = LTrim(RTrim(SUBSTRING(@t, 1, @p - 1)))
else
set @type = LTrim(RTrim(@t))
insert @par (ParameterName, ParameterType, DefaultValue)
values(@name, @type, @default)
end--while len(@w) > 0
fetch next from c into @w
end
close c
deallocate c
select *
from @par
答案 1 :(得分:1)
MS SQL仅为CLR存储过程和函数存储默认设置,因此在这种情况下只能解析对象定义。 要运行该示例,您可以创建一个空白存储过程,或者执行任何其他操作。
ALTER PROCEDURE dbo.usp_test1
(
@a UNIQUEIDENTIFIER = NULL,
@b DATETIME = '20100101',
@c DATETIME = DEFAULT,
@d BIT = 1,
@e BIT,
@k INT = 1,
@f BIT = 0, @g NVARCHAR(MAX) = '23235',
@h INT = 3,
@j DECIMAL(10,2) = DEFAULT
)
WITH RECOMPILE
AS
BEGIN
PRINT 1;
END
此查询返回存储过程的默认值列表:
SELECT
data3.name
, [default_value] = REVERSE(RTRIM(SUBSTRING(
data3.rtoken
, CASE
WHEN CHARINDEX(N',', data3.rtoken) > 0
THEN CHARINDEX(N',', data3.rtoken) + 1
WHEN CHARINDEX(N')', data3.rtoken) > 0
THEN CHARINDEX(N')', data3.rtoken) + 1
ELSE 1
END
, LEN(data3.rtoken)
)))
FROM (
SELECT
data2.name
, rtoken = REVERSE(
SUBSTRING(ptoken
, CHARINDEX('=', ptoken, 1) + 1
, LEN(data2.ptoken))
)
FROM (
SELECT
data.name
, ptoken = SUBSTRING(
data.tokens
, token_pos + name_length + 1
, ISNULL(ABS(next_token_pos - token_pos - name_length - 1), LEN(data.tokens))
)
FROM (
SELECT
sm3.tokens
, p.name
, name_length = LEN(p.name)
, token_pos = CHARINDEX(p.name, sm3.tokens)
, next_token_pos = CHARINDEX(p2.name, sm3.tokens)
FROM (
SELECT
sm2.[object_id]
, sm2.[type]
, tokens = REVERSE(SUBSTRING(sm2.tokens, ISNULL(CHARINDEX('SA', sm2.tokens) + 2, 0), LEN(sm2.tokens)))
FROM (
SELECT
sm.[object_id]
, o.[type]
, tokens = REVERSE(SUBSTRING(
sm.[definition]
, CHARINDEX(o.name, sm.[definition]) + LEN(o.name) + 1
, ABS(CHARINDEX(N'AS', sm.[definition]))
)
)
FROM sys.sql_modules sm WITH (NOLOCK)
JOIN sys.objects o WITH (NOLOCK) ON sm.[object_id] = o.[object_id]
JOIN sys.schemas s WITH (NOLOCK) ON o.[schema_id] = s.[schema_id]
WHERE o.[type] = 'P '
AND s.name + '.' + o.name = 'dbo.usp_test1'
) sm2
WHERE sm2.tokens LIKE '%=%'
) sm3
JOIN sys.parameters p WITH (NOLOCK) ON sm3.[object_id] = p.[object_id]
OUTER APPLY (
SELECT p2.name
FROM sys.parameters p2 WITH (NOLOCK)
WHERE p2.is_output = 0
AND sm3.[object_id] = p2.[object_id]
AND p.parameter_id + 1 = p2.parameter_id
) p2
WHERE p.is_output = 0
) data
) data2
WHERE data2.ptoken LIKE '%=%'
) data3
通过此查询,您可以知道存储过程是否包含任何默认值:
DECLARE @name SYSNAME = 'dbo.usp_test1'
IF EXISTS(
SELECT 1
FROM (
SELECT
sm2.[object_id]
, tokens = SUBSTRING(sm2.tokens, ISNULL(CHARINDEX('SA', sm2.tokens) + 2, 0), LEN(sm2.tokens))
FROM (
SELECT
sm.[object_id]
, tokens = REVERSE(SUBSTRING(
sm.[definition]
, CHARINDEX(o.name, sm.[definition]) + LEN(o.name) + 1
, ABS(CHARINDEX(N'AS', sm.[definition]))
)
)
FROM sys.sql_modules sm WITH (NOLOCK)
JOIN sys.objects o WITH (NOLOCK) ON sm.[object_id] = o.[object_id]
JOIN sys.schemas s WITH (NOLOCK) ON o.[schema_id] = s.[schema_id]
WHERE o.[type] = 'P '
AND s.name + '.' + o.name = @name
) sm2
) sm3
WHERE sm3.tokens LIKE '%=%'
) PRINT @name + ' have default values'
答案 2 :(得分:0)
WITH t1 AS
(
SELECT
SCHEMA_NAME(SCHEMA_ID) AS [Schema]
,SO.name
, SO.type
,SO.Type_Desc AS [ObjectType (UDF/SP)]
,P.parameter_id AS [ParameterID]
,P.name AS [ParameterName]
,P.user_type_id
/*,P.scale
,P.precision
,P.max_length
*/
,TYPE_NAME(P.user_type_id) AS [ParameterDataType]
-- ,P.max_length AS [ParameterMaxBytes]
,CASE WHEN user_type_id = 231 THEN max_length / 2 ELSE NULL END nvarcharsize
,P.is_output AS [IsOutPutParameter]
,ltrim(rtrim(REPLACE(LEFT( OBJECT_DEFINITION (p.object_id),90000),'CREATE PROCEDURE ',''))) ProcDef
FROM sys.objects AS SO
INNER JOIN sys.parameters AS P ON SO.OBJECT_ID = P.OBJECT_ID AND SO.type = 'P'
AND SO.Name NOT LIKE 'Report%'
AND SO.Name NOT LIKE '!_%' ESCAPE '!'
)
, T2 AS
(
select
--ProcDef
LEFT(ProcDef,patindex('%AS%BEGIN%',ProcDef)-2) ProcedureDef
,
name Procname,
ParameterName,
ParameterID,
ParameterDataType,
nvarcharsize
from t1
)
, T3 AS
(
select
substring(ProcedureDef,charindex(ParameterName,ProcedureDef) + len(parametername) + len(ParameterDataType) + 2,12) parampos
,
* from t2 where procname like 'MyProcName'
)
, T4 AS
(
select
CHARINDEX('=',parampos) haseq,
replace(replace(replace(substring(parampos,CHARINDEX('=',parampos),100),' ',''),'=',''),',','') valdef
,
* from t3
)
, t5 as
(
select
CASE WHEN haseq > 0 THEN valdef else '' end defaultvalue,
* from t4
)
select * from t5
ORDER BY Procname, parameterid
GO
答案 3 :(得分:-1)
有更简单,更正确的方法来获取SP和函数的所有输入和输出参数,请尝试以下语句。 (来源是http://www.mssqltips.com/sqlservertip/1669/generate-a-parameter-list-for-all-sql-server-stored-procedures-and-functions/)
SELECT SCHEMA_NAME(SCHEMA_ID) AS [Schema],
SO.Name AS [ObjectName],
SO.Type_Desc AS [ObjectType (UDF/SP)],
PM.Parameter_ID AS [ParameterID],
case
when pm.system_type_id = pm.user_type_id then 'system_type'
else 'user_type'
end as [TypeDescr],
CASE
WHEN PM.Parameter_ID = 0 THEN 'Returns'
ELSE PM.Name
END AS [ParameterName],
'['+TYPE_NAME(PM.User_Type_ID)+']' AS [ParameterDataType],
CASE
WHEN TYPE_NAME(PM.User_Type_ID) IN ('float', 'uniqueidentifier', 'datetime', 'bit', 'bigint', 'int', 'image', 'money', 'xml', 'varbinary', 'tinyint', 'text', 'ntext', 'smallint', 'smallmoney') THEN ''
WHEN TYPE_NAME(PM.User_Type_ID) IN ('decimal', 'numeric') THEN '(' + CAST( Precision AS VARCHAR(4) ) + ', ' + CAST( Scale AS VARCHAR(4)) + ')'
ELSE
case
when PM.Max_Length <> -1 then '('+CAST( PM.Max_Length AS VARCHAR(4))+')'
when (TYPE_NAME(PM.User_Type_ID) = 'xml') or (pm.system_type_id <> pm.user_type_id) then ''
else '(max)'
end
END AS [Size],
CASE
WHEN PM.Is_Output = 1 THEN 'Output'
ELSE 'Input'
END AS [Direction]
FROM sys.objects AS SO
INNER JOIN sys.parameters AS PM ON SO.OBJECT_ID = PM.OBJECT_ID
WHERE TYPE IN ('P','FN')
ORDER BY [Schema], SO.Name, PM.parameter_id