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
这是我对这个问题的独立看法，我用在我自己的工作中。它可以在SQL2000及更高版本中工作，允许通配符、列过滤，并搜索大多数常规数据类型。
伪代码描述可以选择* from *，其中任何类似'foo'的地方
--------------------------------------------------------------------------------
-- Search all columns in all tables in a database for a string.
-- Does not search: image, sql_variant or user-defined types.
-- Exact search always for money and smallmoney; no wildcards for matching these.
--------------------------------------------------------------------------------
declare @SearchTerm nvarchar(4000) -- Can be max for SQL2005+
declare @ColumnName sysname
--------------------------------------------------------------------------------
-- SET THESE!
--------------------------------------------------------------------------------
set @SearchTerm = N'foo' -- Term to be searched for, wildcards okay
set @ColumnName = N'' -- Use to restrict the search to certain columns, wildcards okay, null or empty string for all cols
--------------------------------------------------------------------------------
-- END SET
--------------------------------------------------------------------------------
set nocount on
declare @TabCols table (
id int not null primary key identity
, table_schema sysname not null
, table_name sysname not null
, column_name sysname not null
, data_type sysname not null
)
insert into @TabCols (table_schema, table_name, column_name, data_type)
select t.TABLE_SCHEMA, c.TABLE_NAME, c.COLUMN_NAME, c.DATA_TYPE
from INFORMATION_SCHEMA.TABLES t
join INFORMATION_SCHEMA.COLUMNS c on t.TABLE_SCHEMA = c.TABLE_SCHEMA
and t.TABLE_NAME = c.TABLE_NAME
where 1 = 1
and t.TABLE_TYPE = 'base table'
and c.DATA_TYPE not in ('image', 'sql_variant')
and c.COLUMN_NAME like case when len(@ColumnName) > 0 then @ColumnName else '%' end
order by c.TABLE_NAME, c.ORDINAL_POSITION
declare
@table_schema sysname
, @table_name sysname
, @column_name sysname
, @data_type sysname
, @exists nvarchar(4000) -- Can be max for SQL2005+
, @sql nvarchar(4000) -- Can be max for SQL2005+
, @where nvarchar(4000) -- Can be max for SQL2005+
, @run nvarchar(4000) -- Can be max for SQL2005+
while exists (select null from @TabCols) begin
select top 1
@table_schema = table_schema
, @table_name = table_name
, @exists = 'select null from [' + table_schema + '].[' + table_name + '] where 1 = 0'
, @sql = 'select ''' + '[' + table_schema + '].[' + table_name + ']' + ''' as TABLE_NAME, * from [' + table_schema + '].[' + table_name + '] where 1 = 0'
, @where = ''
from @TabCols
order by id
while exists (select null from @TabCols where table_schema = @table_schema and table_name = @table_name) begin
select top 1
@column_name = column_name
, @data_type = data_type
from @TabCols
where table_schema = @table_schema
and table_name = @table_name
order by id
-- Special case for money
if @data_type in ('money', 'smallmoney') begin
if isnumeric(@SearchTerm) = 1 begin
set @where = @where + ' or [' + @column_name + '] = cast(''' + @SearchTerm + ''' as ' + @data_type + ')' -- could also cast the column as varchar for wildcards
end
end
-- Special case for xml
else if @data_type = 'xml' begin
set @where = @where + ' or cast([' + @column_name + '] as nvarchar(max)) like ''' + @SearchTerm + ''''
end
-- Special case for date
else if @data_type in ('date', 'datetime', 'datetime2', 'datetimeoffset', 'smalldatetime', 'time') begin
set @where = @where + ' or convert(nvarchar(50), [' + @column_name + '], 121) like ''' + @SearchTerm + ''''
end
-- Search all other types
else begin
set @where = @where + ' or [' + @column_name + '] like ''' + @SearchTerm + ''''
end
delete from @TabCols where table_schema = @table_schema and table_name = @table_name and column_name = @column_name
end
set @run = 'if exists(' + @exists + @where + ') begin ' + @sql + @where + ' print ''' + @table_name + ''' end'
print @run
exec sp_executesql @run
end
set nocount off
我没有把它放在proc形式中，因为我不想在数百个db中维护它，而且它实际上是用于临时工作的。请随意评论错误修复。
其他回答
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'
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
这是我对这个问题的独立看法，我用在我自己的工作中。它可以在SQL2000及更高版本中工作，允许通配符、列过滤，并搜索大多数常规数据类型。
伪代码描述可以选择* from *，其中任何类似'foo'的地方
--------------------------------------------------------------------------------
-- Search all columns in all tables in a database for a string.
-- Does not search: image, sql_variant or user-defined types.
-- Exact search always for money and smallmoney; no wildcards for matching these.
--------------------------------------------------------------------------------
declare @SearchTerm nvarchar(4000) -- Can be max for SQL2005+
declare @ColumnName sysname
--------------------------------------------------------------------------------
-- SET THESE!
--------------------------------------------------------------------------------
set @SearchTerm = N'foo' -- Term to be searched for, wildcards okay
set @ColumnName = N'' -- Use to restrict the search to certain columns, wildcards okay, null or empty string for all cols
--------------------------------------------------------------------------------
-- END SET
--------------------------------------------------------------------------------
set nocount on
declare @TabCols table (
id int not null primary key identity
, table_schema sysname not null
, table_name sysname not null
, column_name sysname not null
, data_type sysname not null
)
insert into @TabCols (table_schema, table_name, column_name, data_type)
select t.TABLE_SCHEMA, c.TABLE_NAME, c.COLUMN_NAME, c.DATA_TYPE
from INFORMATION_SCHEMA.TABLES t
join INFORMATION_SCHEMA.COLUMNS c on t.TABLE_SCHEMA = c.TABLE_SCHEMA
and t.TABLE_NAME = c.TABLE_NAME
where 1 = 1
and t.TABLE_TYPE = 'base table'
and c.DATA_TYPE not in ('image', 'sql_variant')
and c.COLUMN_NAME like case when len(@ColumnName) > 0 then @ColumnName else '%' end
order by c.TABLE_NAME, c.ORDINAL_POSITION
declare
@table_schema sysname
, @table_name sysname
, @column_name sysname
, @data_type sysname
, @exists nvarchar(4000) -- Can be max for SQL2005+
, @sql nvarchar(4000) -- Can be max for SQL2005+
, @where nvarchar(4000) -- Can be max for SQL2005+
, @run nvarchar(4000) -- Can be max for SQL2005+
while exists (select null from @TabCols) begin
select top 1
@table_schema = table_schema
, @table_name = table_name
, @exists = 'select null from [' + table_schema + '].[' + table_name + '] where 1 = 0'
, @sql = 'select ''' + '[' + table_schema + '].[' + table_name + ']' + ''' as TABLE_NAME, * from [' + table_schema + '].[' + table_name + '] where 1 = 0'
, @where = ''
from @TabCols
order by id
while exists (select null from @TabCols where table_schema = @table_schema and table_name = @table_name) begin
select top 1
@column_name = column_name
, @data_type = data_type
from @TabCols
where table_schema = @table_schema
and table_name = @table_name
order by id
-- Special case for money
if @data_type in ('money', 'smallmoney') begin
if isnumeric(@SearchTerm) = 1 begin
set @where = @where + ' or [' + @column_name + '] = cast(''' + @SearchTerm + ''' as ' + @data_type + ')' -- could also cast the column as varchar for wildcards
end
end
-- Special case for xml
else if @data_type = 'xml' begin
set @where = @where + ' or cast([' + @column_name + '] as nvarchar(max)) like ''' + @SearchTerm + ''''
end
-- Special case for date
else if @data_type in ('date', 'datetime', 'datetime2', 'datetimeoffset', 'smalldatetime', 'time') begin
set @where = @where + ' or convert(nvarchar(50), [' + @column_name + '], 121) like ''' + @SearchTerm + ''''
end
-- Search all other types
else begin
set @where = @where + ' or [' + @column_name + '] like ''' + @SearchTerm + ''''
end
delete from @TabCols where table_schema = @table_schema and table_name = @table_name and column_name = @column_name
end
set @run = 'if exists(' + @exists + @where + ') begin ' + @sql + @where + ' print ''' + @table_name + ''' end'
print @run
exec sp_executesql @run
end
set nocount off
我没有把它放在proc形式中，因为我不想在数百个db中维护它，而且它实际上是用于临时工作的。请随意评论错误修复。
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';
根据bnkdev的回答，我修改了Narayana的代码，以搜索所有列，甚至是数字列。
它会运行得慢一些，但这个版本实际上会找到所有匹配项，而不仅仅是文本列中的匹配项。
我对他感激不尽。省了我好几天徒手找!
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
CREATE TABLE #Results (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 QUOTENAME(COLUMN_NAME) > @ColumnName
)
IF @ColumnName IS NOT NULL
BEGIN
INSERT INTO #Results
EXEC
(
'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(CONVERT(varchar(max), ' + @ColumnName + '), 3630)
FROM ' + @TableName + ' (NOLOCK) ' +
' WHERE CONVERT(varchar(max), ' + @ColumnName + ') LIKE ' + @SearchStr2
)
END
END
END
SELECT ColumnName, ColumnValue FROM #Results
END
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