给定一个数字,我如何发现在什么表和列中可以找到它?

我不在乎速度快不快,只要管用就行。


当前回答

在这里,非常甜蜜和小的解决方案:

1) create a store procedure:

create procedure get_table
@find_str varchar(50)
as 
begin
  declare @col_name varchar(500), @tab_name varchar(500);
  declare @find_tab TABLE(table_name varchar(100), column_name varchar(100));

  DECLARE tab_col cursor for 
  select C.name as 'col_name', T.name as tab_name
  from sys.tables as T
  left outer join sys.columns as C on  C.object_id=T.object_id
  left outer join sys.types as TP on  C.system_type_id=TP.system_type_id
  where type='U' 
  and TP.name in('text','ntext','varchar','char','nvarchar','nchar');

  open tab_col
  fetch next from tab_col into @col_name, @tab_name

  while @@FETCH_STATUS = 0
  begin        
    insert into @find_tab 
    exec('select ''' +  @tab_name + ''',''' + @col_name + ''' from ' + @tab_name + 
    ' where ' + @col_name + '=''' + @find_str + ''' group by ' + 
    @col_name + ' having count(*)>0');

    fetch next from tab_col into @col_name, @tab_name;
  end
  CLOSE tab_col;  
  DEALLOCATE tab_col; 
  select table_name, column_name from @find_tab;

end

==========================

2) call procedure by calling store procedure:
exec get_table 'serach_string';

其他回答

使用JOIN和CURSOR的另一种方法:

USE My_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 (
    tbl nvarchar(max),
    col nvarchar(max),
    val nvarchar(max)   
);

declare @tbl nvarchar(max);
declare @col nvarchar(max);
declare @q nvarchar(max);
declare @search nvarchar(max) = 'my search key';

-- Create a cursor on all columns in the database
declare c cursor for
SELECT 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 @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 ''' + @tbl + ''', ''' + @col + ''', ' + @col + ' FROM ' + @tbl + ' WHERE ' + @col + ' LIKE ''%' + @search + '%'''
    EXEC SP_EXECUTESQL @q
    fetch next from c into @tbl, @col
end
close c
deallocate c

-- Get results
select * from #tmp

-- Remove local temp table.
drop table #tmp

这是我解决这个问题的方法。在SQLServer2008R2上测试

CREATE PROC SearchAllTables
@SearchStr nvarchar(100)
AS
BEGIN
DECLARE @dml nvarchar(max) = N''        
IF OBJECT_ID('tempdb.dbo.#Results') IS NOT NULL DROP TABLE dbo.#Results
CREATE TABLE dbo.#Results
 ([tablename] nvarchar(100), 
  [ColumnName] nvarchar(100), 
  [Value] nvarchar(max))  
SELECT @dml += ' SELECT ''' + s.name + '.' + t.name + ''' AS [tablename], ''' + 
                c.name + ''' AS [ColumnName], CAST(' + QUOTENAME(c.name) + 
               ' AS nvarchar(max)) AS [Value] FROM ' + QUOTENAME(s.name) + '.' + QUOTENAME(t.name) +
               ' (NOLOCK) WHERE CAST(' + QUOTENAME(c.name) + ' AS nvarchar(max)) LIKE ' + '''%' + @SearchStr + '%'''
FROM sys.schemas s JOIN sys.tables t ON s.schema_id = t.schema_id
                   JOIN sys.columns c ON t.object_id = c.object_id
                   JOIN sys.types ty ON c.system_type_id = ty.system_type_id AND c .user_type_id = ty .user_type_id
WHERE t.is_ms_shipped = 0 AND ty.name NOT IN ('timestamp', 'image', 'sql_variant')

INSERT dbo.#Results
EXEC sp_executesql @dml

SELECT *
FROM dbo.#Results
END

您可能需要为数据库构建一个倒立索引。它肯定是相当快的。

-- exec pSearchAllTables 'M54*'

ALTER PROC pSearchAllTables (@SearchStr NVARCHAR(100))
AS
BEGIN
    -- A procedure to search all tables in a database for a value
    -- Note: Use * or % for wildcard

    DECLARE 
        @Results TABLE([Schema.Table.ColumnName] NVARCHAR(370), ColumnValue NVARCHAR(3630))

    SET NOCOUNT ON

    DECLARE 
        @TableName NVARCHAR(256) = ''
        , @ColumnName NVARCHAR(128)     
        , @SearchStr2 NVARCHAR(110) = QUOTENAME(REPLACE(@SearchStr, '*', '%'), '''')

    WHILE @TableName IS NOT NULL
        BEGIN
            SET @ColumnName = ''
            SET @TableName = 
            (
                SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME))
                FROM INFORMATION_SCHEMA.TABLES
                WHERE TABLE_TYPE = 'BASE TABLE'
                AND QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName
                AND OBJECTPROPERTY(OBJECT_ID(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)), 'IsMSShipped') = 0
            )

            WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)
                BEGIN
                    SET @ColumnName =
                    (
                        SELECT MIN(QUOTENAME(COLUMN_NAME))
                        FROM INFORMATION_SCHEMA.COLUMNS
                        WHERE TABLE_SCHEMA    = PARSENAME(@TableName, 2)
                        AND TABLE_NAME  = PARSENAME(@TableName, 1)
                        AND DATA_TYPE IN ('char', 'varchar', 'nchar', 'nvarchar')
                        AND QUOTENAME(COLUMN_NAME) > @ColumnName
                    )

                    IF @ColumnName IS NOT NULL
                        BEGIN
                            INSERT INTO @Results 
                            EXEC ('SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) FROM ' + @TableName + ' (NOLOCK) WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2)

                        END

                END 

        END

    SELECT 
        [Schema.Table.ColumnName]
        , ColumnValue 
    FROM @Results
    GROUP BY 
        [Schema.Table.ColumnName]
        , ColumnValue 

END

这可能对你有帮助。——来自纳拉亚纳·维亚斯。它搜索给定数据库中所有表的所有列。我以前用过,效果很好。

这是上面链接中的Stored Proc -我所做的唯一更改是将临时表替换为表变量,这样您就不必每次都记得删除它。

CREATE PROC SearchAllTables
(
    @SearchStr nvarchar(100)
)
AS
BEGIN

-- Copyright © 2002 Narayana Vyas Kondreddi. All rights reserved.
-- Purpose: To search all columns of all tables for a given search string
-- Written by: Narayana Vyas Kondreddi
-- Site: http://vyaskn.tripod.com
-- Tested on: SQL Server 7.0 and SQL Server 2000
-- Date modified: 28th July 2002 22:50 GMT

DECLARE @Results TABLE(ColumnName nvarchar(370), ColumnValue nvarchar(3630))

SET NOCOUNT ON

DECLARE @TableName nvarchar(256), @ColumnName nvarchar(128), @SearchStr2 nvarchar(110)
SET  @TableName = ''
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%','''')

WHILE @TableName IS NOT NULL
BEGIN
    SET @ColumnName = ''
    SET @TableName = 
    (
        SELECT MIN(QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME))
        FROM    INFORMATION_SCHEMA.TABLES
        WHERE       TABLE_TYPE = 'BASE TABLE'
            AND QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME) > @TableName
            AND OBJECTPROPERTY(
                    OBJECT_ID(
                        QUOTENAME(TABLE_SCHEMA) + '.' + QUOTENAME(TABLE_NAME)
                         ), 'IsMSShipped'
                           ) = 0
    )

    WHILE (@TableName IS NOT NULL) AND (@ColumnName IS NOT NULL)
    BEGIN
        SET @ColumnName =
        (
            SELECT MIN(QUOTENAME(COLUMN_NAME))
            FROM    INFORMATION_SCHEMA.COLUMNS
            WHERE       TABLE_SCHEMA    = PARSENAME(@TableName, 2)
                AND TABLE_NAME  = PARSENAME(@TableName, 1)
                AND DATA_TYPE IN ('char', 'varchar', 'nchar', 'nvarchar')
                AND QUOTENAME(COLUMN_NAME) > @ColumnName
        )

        IF @ColumnName IS NOT NULL
        BEGIN
            INSERT INTO @Results
            EXEC
            (
                'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) 
                FROM ' + @TableName + 
                ' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
            )
        END
    END 
END

SELECT ColumnName, ColumnValue FROM @Results
END

执行存储过程。

 EXEC SearchAllTables 'YourStringHere'