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Deprecated: Return type of Requests_Cookie_Jar::offsetSet($key, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/techmemo/wp-includes/Requests/Cookie/Jar.php on line 89

Deprecated: Return type of Requests_Cookie_Jar::offsetUnset($key) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/techmemo/wp-includes/Requests/Cookie/Jar.php on line 102

Deprecated: Return type of Requests_Cookie_Jar::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/techmemo/wp-includes/Requests/Cookie/Jar.php on line 111

Deprecated: Return type of Requests_Utility_CaseInsensitiveDictionary::offsetExists($key) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/techmemo/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php on line 40

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Deprecated: Return type of Requests_Utility_CaseInsensitiveDictionary::offsetSet($key, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/techmemo/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php on line 68

Deprecated: Return type of Requests_Utility_CaseInsensitiveDictionary::offsetUnset($key) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /var/www/techmemo/wp-includes/Requests/Utility/CaseInsensitiveDictionary.php on line 82

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查询整个数据库中某个特定值所在的表和字段的方法 – Tech Memo

查询整个数据库中某个特定值所在的表和字段的方法

查询整个数据库中某个特定值所在的表和字段的方法

有时候我们想通过一个值知道这个值来自数据库的哪个表以及哪个字段,在网上搜了一下,找到一个比较好的方法,通过一个存储过程实现的。只需要传入一个想要查找的值,即可查询出这个值所在的表和字段名。

前提是要将这个存储过程放在所查询的数据库。


CREATE PROCEDURE [dbo].[SP_FindValueInDB]
(
@value VARCHAR(1024)
)        
AS
BEGIN
— SET NOCOUNT ON added to prevent extra result sets from
— interfering with SELECT statements.
SET NOCOUNT ON;
DECLARE @sql VARCHAR(1024) 
DECLARE @table VARCHAR(64) 
DECLARE @column VARCHAR(64) 

CREATE TABLE #t ( 
tablename VARCHAR(64), 
columnname VARCHAR(64) 

DECLARE TABLES CURSOR 
FOR 

SELECT o.name, c.name 
FROM syscolumns c 
INNER JOIN sysobjects o ON c.id = o.id 
WHERE o.type = ‘U’ AND c.xtype IN (167, 175, 231, 239) 
ORDER BY o.name, c.name 

OPEN TABLES 

FETCH NEXT FROM TABLES 
INTO @table, @column 

WHILE @@FETCH_STATUS = 0 
BEGIN 
SET @sql = ‘IF EXISTS(SELECT NULL FROM [‘ + @table + ‘] ‘ 
SET @sql = @sql + ‘WHERE RTRIM(LTRIM([‘ + @column + ‘])) LIKE ”%’ + @value + ‘%”) ‘ 
SET @sql = @sql + ‘INSERT INTO #t VALUES (”’ + @table + ”’, ”’ 
SET @sql = @sql + @column + ”’)’ 

EXEC(@sql) 

FETCH NEXT FROM TABLES 
INTO @table, @column 
END 

CLOSE TABLES 
DEALLOCATE TABLES 

SELECT * 
FROM #t 

DROP TABLE #t 

End

 

例如,要查询值’BBQ CHIC SW’,结果如下:

返回三条记录,说明这个值存在于三个表中,分别为_dts_menudef, g_dts_menudef和g_recipe中,字段名分别为name1, name1, name。

非常好用。

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