Add Wildcards to Advanced Search Stored Procedure
I have found that I can add wildcard support to the Advanced Search Stored Procedure submitted by jgroseth (Posted: 07/02/2004) here:
http://www.sqlservercentral.com/scripts/contributions/1201.asp
by simply modifying "charindex( c.string," to "patindex('%' + c.string + '%'"
I did this to take varying whitespace into account since SQL server does not care about whitespace, for example
"INSERT INTO DATABASE_MYTABLE" could have any number of spaces between "INSERT", "INTO", and "DATABASE_MYTABLE", Without wildcards one would need to search for every stored procedure that contained these three words. With wildcards we can limit the search to the three words in sequence"
"INSERT %INTO %DATABASE_MYTABLE"
My change hardly justifies changing the credit for this great stored proceure, so I left the credits as they are.
-- sp_grep v1.0 03/16/1995, v1.1 10/26/1995
-- Author: Andrew Zanevsky, AZ Databases, Inc.
-- E-mail: zanevsky@azdatabases.com
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)
BEGIN --procedure
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 patindex('%' + 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 patindex( '%' + c.string + '%',
lower( right( a.text, @longest ) +
substring( b.text, 1, @longest ) ) ) > 0
end
else
begin
insert #found_objects
select a.id, c.str_no
from syscomments a, #search c
where patindex( '%' + 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 patindex( '%' + c.string + '%',
right( a.text, @longest ) +
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 DISTINCT 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 , Name
END --procedure