有一個名爲sp_grep的開源存儲過程，它允許您根據其makup的DDL /代碼查找數據庫對象。我始終使用此過程來查找符合特定條件的對象。這在數據庫重構中非常有用。
要以編程方式打開和修改SQL對象，可以在任何.Net應用程序中使用SQLDMO對象。 Here是一些使用SQLDMO的例子。
實施例：EXEC sp_grep '可樂='
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER OFF
GO
/*********************************************************************
* Stored procedure sp_grep
* SQL Server: Microsoft SQL Server 6.0, 4.21 for Windows NT,
* Microsoft SQL Server 4.2 for OS/2.
* Author: Andrew Zanevsky, AZ Databases, Inc.
* Version/Date: Version 1.1, October 26, 1995
* Description: Searches syscomments table in the current database
* for occurences of a combination of strings.
* Correclty handles cases when a substring begins in
* one row of syscomments and continues in the next.
* Parameters: - @parameter describes the search:
* string1 {operation1 string2} {operation2 string 3} ...
* where - stringN is a string of characters enclosed in
* curly brackets not longer than 80 characters.
* Brackets may be omitted if stringN does not
* contain spaces or characters: +,-,&;
* - operationN is one of the characters: +,-,&.
* Parameter is interpreted as follows:
* 1.Compose the list of all objects where string1 occurs.
* 2.If there is no more operations in the parameter,
* then display the list and stop. Otherwise continue.
* 3.If the next operation is + then add to the list all
* objects where the next string occurs;
* else if the next operation is - then delete from the
* list all objects where the next string occurs;
* else if the next operation is & then delete from the
* list all objects where the next string does not
* occur (leave in the list only those objects where
* the next string occurs);
* 4.Goto step 2.
* Parameter may be up to 255 characters long, and may not
* contain <CarriageReturn> or <LineFeed> characters.
* Please note that operations are applied in the order
* they are used in the parameter string (left to right).
* There is no other priority of executing them. Every
* operation is applied to the list combined as a result
* of all previous operations.
* Number of spaces between words of a string matters in a
* search (e.g. "select *" is not equal to "select *").
* Short or frequently used strings (such as "select") may
* produce a long result set.
*
* - @case: i = insensitive/s = sensitive (default)
* Insensitive search is performed regardless of this parameter
* if SQL Server is set up with case insensitive sort order.
*
* Examples: sp_grep employee
* list all objects where string 'employee' occurs;
* sp_grep employee, i
* list all objects where string 'employee' occurs in
* any case (upper, lower, or mixed), such as
* 'EMPLOYEE', 'Employee', 'employee', etc.;
* sp_grep 'employee&salary+department-trigger'
* list all objects where either both strings 'employee'
* and 'salary' occur or string 'department' occurs, and
* string 'trigger' does not occur;
* sp_grep '{select FirstName + LastName}'
* list all objects where string
* "select FirstName + LastName" occurs;
* sp_grep '{create table}-{drop table}'
* list all objects where tables are created and not
* dropped.
*
**********************************************************************/
-- sp_grep v1.0 03/16/1995, v1.1 10/26/1995
-- Author: Andrew Zanevsky, AZ Databases, Inc.
-- E-mail: [email protected]
ALTER proc [dbo].[sp_grep] @parameter varchar(255) = null, @case char(1) = 's'
as
declare @str_no tinyint,
@msg_str_no varchar(3),
@operation char(1),
@string varchar(80),
@oper_pos smallint,
@context varchar(255),
@i tinyint,
@longest tinyint,
@msg varchar(255)
if @parameter is null /* provide instructions */
begin
print 'Execute sp_grep "{string1}operation1{string2}operation2{string3}...", [case]'
print '- stringN is a string of characters up to 80 characters long, '
print ' enclosed in curly brackets. Brackets may be omitted if stringN '
print ' does not contain leading and trailing spaces or characters: +,-,&.'
print '- operationN is one of the characters: +,-,&. Interpreted as or,minus,and.'
print ' Operations are executed from left to right with no priorities.'
print '- case: specify "i" for case insensitive comparison.'
print 'E.g. sp_grep "alpha+{beta gamma}-{delta}&{+++}"'
print ' will search for all objects that have an occurence of string "alpha"'
print ' or string "beta gamma", do not have string "delta", '
print ' and have string "+++".'
return
end
/* Check for <CarriageReturn> or <LineFeed> characters */
if charindex(char(10), @parameter) > 0 or charindex(char(13), @parameter) > 0
begin
print 'Parameter string may not contain <CarriageReturn> or <LineFeed> characters.'
return
end
if lower(@case) = 'i'
select @parameter = lower(ltrim(rtrim(@parameter)))
else
select @parameter = ltrim(rtrim(@parameter))
create table #search (str_no tinyint, operation char(1), string varchar(80), last_obj int)
create table #found_objects (id int, str_no tinyint)
create table #result (id int)
/* Parse the parameter string */
select @str_no = 0
while datalength(@parameter) > 0
begin
/* Get operation */
select @str_no = @str_no + 1, @msg_str_no = rtrim(convert(char(3), @str_no + 1))
if @str_no = 1
select @operation = '+'
else
begin
if substring(@parameter, 1, 1) in ('+', '-', '&')
select @operation = substring(@parameter, 1, 1),
@parameter = ltrim(right(@parameter, datalength(@parameter) - 1))
else
begin
select @context = rtrim(substring(
@parameter + space(255 - datalength(@parameter)), 1, 20))
select @msg = 'Incorrect or missing operation sign before "' + @context + '".'
print @msg
select @msg = 'Search string ' + @msg_str_no + '.'
print @msg
return
end
end
/* Get string */
if datalength(@parameter) = 0
begin
print 'Missing search string at the end of the parameter.'
select @msg = 'Search string ' + @msg_str_no + '.'
print @msg
return
end
if substring(@parameter, 1, 1) = '{'
begin
if charindex('}', @parameter) = 0
begin
select @context = rtrim(substring(
@parameter + space(255 - datalength(@parameter)), 1, 200))
select @msg = 'Bracket not closed after "' + @context + '".'
print @msg
select @msg = 'Search string ' + @msg_str_no + '.'
print @msg
return
end
if charindex('}', @parameter) > 82
begin
select @context = rtrim(substring(
@parameter + space(255 - datalength(@parameter)), 2, 20))
select @msg = 'Search string ' + @msg_str_no + ' is longer than 80 characters.'
print @msg
select @msg = 'String begins with "' + @context + '".'
print @msg
return
end
select @string = substring(@parameter, 2, charindex('}', @parameter) - 2),
@parameter = ltrim(right(@parameter,
datalength(@parameter) - charindex('}', @parameter)))
end
else
begin
/* Find the first operation sign */
select @oper_pos = datalength(@parameter) + 1
if charindex('+', @parameter) between 1 and @oper_pos
select @oper_pos = charindex('+', @parameter)
if charindex('-', @parameter) between 1 and @oper_pos
select @oper_pos = charindex('-', @parameter)
if charindex('&', @parameter) between 1 and @oper_pos
select @oper_pos = charindex('&', @parameter)
if @oper_pos = 1
begin
select @context = rtrim(substring(
@parameter + space(255 - datalength(@parameter)), 1, 20))
select @msg = 'Search string ' + @msg_str_no +
' is missing, before "' + @context + '".'
print @msg
return
end
if @oper_pos > 81
begin
select @context = rtrim(substring(
@parameter + space(255 - datalength(@parameter)), 1, 20))
select @msg = 'Search string ' + @msg_str_no + ' is longer than 80 characters.'
print @msg
select @msg = 'String begins with "' + @context + '".'
print @msg
return
end
select @string = substring(@parameter, 1, @oper_pos - 1),
@parameter = ltrim(right(@parameter,
datalength(@parameter) - @oper_pos + 1))
end
insert #search values (@str_no, @operation, @string, 0)
end
select @longest = max(datalength(string)) - 1
from #search
/* ------------------------------------------------------------------ */
/* Search for strings */
if @case = 'i'
begin
insert #found_objects
select a.id, c.str_no
from syscomments a, #search c
where charindex(c.string, lower(a.text)) > 0
insert #found_objects
select a.id, c.str_no
from syscomments a, syscomments b, #search c
where a.id = b.id
and a.number = b.number
and a.colid + 1 = b.colid
and charindex(c.string,
lower(right(a.text, @longest) +
/* space(255 - datalength(a.text)) +*/
substring(b.text, 1, @longest))) > 0
end
else
begin
insert #found_objects
select a.id, c.str_no
from syscomments a, #search c
where charindex(c.string, a.text) > 0
insert #found_objects
select a.id, c.str_no
from syscomments a, syscomments b, #search c
where a.id = b.id
and a.number = b.number
and a.colid + 1 = b.colid
and charindex(c.string,
right(a.text, @longest) +
/* space(255 - datalength(a.text)) +*/
substring(b.text, 1, @longest)) > 0
end
/* ------------------------------------------------------------------ */
select distinct str_no, id into #dist_objects from #found_objects
create unique clustered index obj on #dist_objects (str_no, id)
/* Apply one operation at a time */
select @i = 0
while @i < @str_no
begin
select @i = @i + 1
select @operation = operation from #search where str_no = @i
if @operation = '+'
insert #result
select id
from #dist_objects
where str_no = @i
else if @operation = '-'
delete #result
from #result a, #dist_objects b
where b.str_no = @i
and a.id = b.id
else if @operation = '&'
delete #result
where not exists
(select 1
from #dist_objects b
where b.str_no = @i
and b.id = #result.id)
end
/* Select results */
select distinct id into #dist_result from #result
/* The following select has been borrowed from the sp_help
** system stored procedure, and modified. */
select Name = o.name,
/* Remove 'convert(char(15)' in the following line
** if user names on your server are longer. */
Owner = convert(char(15), user_name(uid)),
Object_type = substring(v.name + x.name, 1, 16)
from #dist_result d,
sysobjects o,
master.dbo.spt_values v,
master.dbo.spt_values x
where d.id = o.id
/* SQL Server version 6.x uses 15, prior versions use 7 in expression below */
and o.sysstat & (7 + 8 * sign(charindex('6.', @@version))) = v.number
and v.type = "O"
and x.type = "R"
and o.userstat & -32768 = x.number
order by Object_type desc, Name asc
它的工作原理！ :-)好東西 – 2009-02-13 08:03:37