Search for a string in all databases, all columns, and all tables (SQL Server 2008 R2)

问题

We suffered some kind of invasion in our SQL Server.

I'm trying to find in every database, in every table, every column the word abortion and cheat.

I can do this with this query, but in a single database.

-- Store results in a local temp table so that.  I'm using a
-- local temp table so that I can access it in SP_EXECUTESQL.
create table #tmp 
(
    db varchar(max),
    tbl nvarchar(max),
    col nvarchar(max),
    val nvarchar(max),
);

declare @db nvarchar(max);
declare @tbl nvarchar(max);
declare @col nvarchar(max);
declare @q nvarchar(max);

declare @search nvarchar(max) = 'abortion';

-- Create a cursor on all columns in the database
declare c cursor for
    SELECT 
        DB_NAME(DB_ID()) as DBName, tbls.TABLE_NAME, cols.COLUMN_NAME  
    FROM INFORMATION_SCHEMA.TABLES AS tbls
    JOIN INFORMATION_SCHEMA.COLUMNS AS cols ON tbls.TABLE_NAME = cols.TABLE_NAME

-- For each table and column pair, see if the search value exists.
open c

fetch next from c into @db, @tbl, @col

while @@FETCH_STATUS = 0
begin
    -- Look for the search key in current table column and if found add it to the results.
    SET @q = 'INSERT INTO #tmp SELECT ''' +@db+''',''' + @tbl + ''', ''' + @col + ''', ' + @col + ' FROM ' + @tbl + ' WHERE ' + @col + ' LIKE ''%' + @search + '%'''
    EXEC SP_EXECUTESQL @q
    fetch next from c into @db, @tbl, @col
end
close c
deallocate c

-- Get results
select distinct db,tbl,col  from #tmp

-- Remove local temp table.
drop table #tmp

How can I find these strings? The result set should be:

DATABASE | TABLE | COLUMN

I don't need the result ( text field ), and I need to select distinct for tables and columns, because it will be a lot of abortion in the same table/column.

回答1:

While the use of the undocumented sp_msforeachdb is generally not encouraged, my instinct would be to send your existing code to this procedure like this:

exec sp_MSforeachdb 'USE [?]; 
-- Store results in a local temp table so that.  I'm using a
-- local temp table so that I can access it in SP_EXECUTESQL.
create table #tmp (
 db varchar(max)   ,
    tbl nvarchar(max),
    col nvarchar(max),
    val nvarchar(max),

);

declare @db nvarchar(max);
declare @tbl nvarchar(max);
declare @col nvarchar(max);
declare @q nvarchar(max);

--------------------------------------------------------------------------------------------
declare @search nvarchar(max) = ''abortion'';
--------------------------------------------------------------------------------------------


-- Create a cursor on all columns in the database
declare c cursor for
SELECT DB_NAME(DB_ID()) as DBName,tbls.TABLE_NAME, cols.COLUMN_NAME  FROM INFORMATION_SCHEMA.TABLES AS tbls
JOIN INFORMATION_SCHEMA.COLUMNS AS cols
ON tbls.TABLE_NAME = cols.TABLE_NAME

-- For each table and column pair, see if the search value exists.
open c
fetch next from c into @db, @tbl, @col
while @@FETCH_STATUS = 0
begin
    -- Look for the search key in current table column and if found add it to the results.
    SET @q = ''INSERT INTO #tmp SELECT '''''' +@db+'''''','''''' + @tbl + '''''', '''''' + @col + '''''', '' + @col + '' FROM '' + @tbl + '' WHERE '' + @col + '' LIKE ''''%'' + @search + ''%''''''
    EXEC SP_EXECUTESQL @q
    fetch next from c into @db, @tbl, @col
end
close c
deallocate c;'

The only added code here is the first line, for the rest of the code just make sure to replace ' with ''. The ? in USE [?] is a special character meaning the currently active database in the loop sp_MSforeachdb executes.

来源：https://stackoverflow.com/questions/32359867/search-for-a-string-in-all-databases-all-columns-and-all-tables-sql-server-20

标签

sql-server

database

tsql

sql-server-2008-r2