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。
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
非常感谢这个有用的脚本。
如果你的表有不可转换的字段,你可能需要在代码中添加以下修改:
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 NOT IN ('text', 'image', 'ntext')
AND QUOTENAME(COLUMN_NAME) > @ColumnName
)
克里斯
其他回答
如果您只需要运行一次这样的搜索,那么您可能可以使用其他答案中已经显示的任何脚本。但除此之外,我建议使用ApexSQL搜索。这是一个免费的SSMS插件,它真的为我节省了很多时间。
在运行任何脚本之前,您都应该根据要搜索的数据类型自定义脚本。如果你知道你正在搜索datetime列,那么就没有必要通过nvarchar列进行搜索。这将加快上面所有查询的速度。
我优化了Allain Lalonde的答案(https://stackoverflow.com/a/436676/412368)。 仍然支持数值。应该大约快4-5倍(1:03 vs 4:30),在带有7GB数据库的桌面上测试。http://developer.azurewebsites.net/2015/01/mssql-searchalltables/
IF OBJECT_ID ('dbo.SearchAllTables', 'P') IS NOT NULL
DROP PROCEDURE dbo.SearchAllTables;
GO
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
-- Customized and modified: 2014-01-21
-- Tested on: SQL Server 2008 R2
DECLARE @Results TABLE(ColumnName nvarchar(370), ColumnValue nvarchar(3630))
SET NOCOUNT ON
DECLARE @TableName nvarchar(256)
DECLARE @ColumnName nvarchar(128)
DECLARE @DataType nvarchar(128)
DECLARE @SearchStr2 nvarchar(110)
DECLARE @SearchDecimal decimal(38,19)
DECLARE @Query nvarchar(4000)
SET @SearchStr2 = QUOTENAME('%' + @SearchStr + '%', '''')
SET @SearchDecimal = CASE WHEN ISNUMERIC(@SearchStr) = 1 THEN CONVERT(decimal(38,19), @SearchStr) ELSE NULL END
PRINT '@SearchStr2: ' + @SearchStr2
PRINT '@SearchDecimal: ' + CAST(@SearchDecimal AS nvarchar)
SET @TableName = ''
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))
DATA_TYPE
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = PARSENAME(@TableName, 2)
AND TABLE_NAME = PARSENAME(@TableName, 1)
AND DATA_TYPE IN ('char', 'varchar', 'nchar', 'nvarchar',
'int', 'bigint', 'tinyint', 'numeric', 'decimal')
AND QUOTENAME(COLUMN_NAME) > @ColumnName
)
SET @DataType =
(
SELECT DATA_TYPE
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_SCHEMA = PARSENAME(@TableName, 2)
AND TABLE_NAME = PARSENAME(@TableName, 1)
AND QUOTENAME(COLUMN_NAME) = @ColumnName
)
PRINT @TableName + '.' + @ColumnName + ' (' + @DataType + ')'
IF @ColumnName IS NOT NULL
BEGIN
IF @DataType IN ('int', 'bigint', 'tinyint', 'numeric', 'decimal')
BEGIN
IF @SearchDecimal IS NOT NULL
BEGIN
SET @Query = 'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(CAST(' + @ColumnName + ' AS nvarchar(110)), 3630) ' +
'FROM ' + @TableName + ' (NOLOCK) ' +
' WHERE ' + @ColumnName + ' = ' + CAST(@SearchDecimal AS nvarchar)
PRINT ' ' + @Query
INSERT INTO @Results
EXEC (@Query)
END
END
ELSE
BEGIN
SET @Query = 'SELECT ''' + @TableName + '.' + @ColumnName + ''', LEFT(' + @ColumnName + ', 3630) ' +
'FROM ' + @TableName + ' (NOLOCK) ' +
' WHERE ' + @ColumnName + ' LIKE ' + @SearchStr2
PRINT ' ' + @Query
INSERT INTO @Results
EXEC (@Query)
END
END
END
END
SELECT ColumnName, ColumnValue FROM @Results
END
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
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。
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