如何搜索表格中的所有列？

Question

如何在SQL Server中搜索表的所有列？

Answer 1

SELECT ...
FROM yourtable
WHERE 'val' IN (field1, field2, field3, field4, ...)

如果你正在寻找确切的全场比赛.如果你正在寻找子串匹配,你将不得不走很远的路:

WHERE field1 LIKE '%val%' or field2 LIKE '%val%' etc....

Answer 2

我不能相信，但我发现了这个，而且效果很好。如果需要，您可以将其他数据类型添加到 WHERE 子句以包含其他类型，也可以将架构名称添加到 JOIN（下面注释）以限制您的搜索。

DECLARE @SQL VARCHAR(MAX) 
DECLARE @SearchString VARCHAR(100) 
SET @SQL='' 

-- ------------------------------------------ 
-- Enter the string to be searched for here : 
SET @SearchString='' 
-- ------------------------------------------ 

SELECT   @SQL = @SQL + 'SELECT CONVERT(VARCHAR(MAX),COUNT(*)) + '' matches in column ''+'''
     + C.name + '''+'' on table '' + ''' + SC.name + '.' + T.name + 
     ''' [Matches for '''+@SearchString+''':] FROM ' + 
     QUOTENAME(SC.name) + '.' + QUOTENAME(T.name) + ' WHERE ' + QUOTENAME(C.name) + 
     ' LIKE ''%' + @SearchString + 
     '%'' HAVING COUNT(*)>0 UNION ALL ' +CHAR(13) + CHAR(10) 

FROM     sys.columns C 
JOIN     sys.tables T ON C.object_id=T.object_id 
JOIN     sys.schemas SC ON SC.schema_id=T.schema_id -- AND SC.name = ''
JOIN     sys.types ST ON C.user_type_id=ST.user_type_id 
JOIN     sys.types SYST ON ST.system_type_id=SYST.user_type_id
    AND ST.system_type_id=SYST.system_type_id 

WHERE    SYST.name IN ('varchar','nvarchar','text','ntext','char','nchar') 

ORDER BY T.name, C.name 

-- Strip off the last UNION ALL 

IF LEN(@SQL)>12 
  SELECT @SQL=LEFT(@SQL,LEN(@SQL)- 12) 

EXEC(@SQL) 
--PRINT @SQL

参考： https: //www.sqlmatters.com/Articles/Searching%20all%20columns%20in%20all%20tables%20in%20a%20database.aspx

Answer 3

我不相信有任何快捷方式，您必须指定要搜索的列列表。我认为，如果您发现自己经常尝试这样做，您可能可以改进 DB 设计。

SELECT * 
FROM MyTable 
WHERE Col1 LIKE '%foo%' OR 
      Col2 LIKE '%foo%' OR  
      Col3 LIKE '%foo%' OR 
      Col4 LIKE '%foo%' OR 
      Col5 LIKE '%foo%' OR 
      Col6 LIKE '%foo%'

Answer 4

您甚至可以通过这种方式进行操作。动态创建查询。

SET NOCOUNT ON;

DECLARE @searchText NVARCHAR(100) = 'Test'
DECLARE @columnName NVARCHAR(100)
DECLARE @tableName NVARCHAR(100) = 'Accounts'
DECLARE @sql NVARCHAR(1000) = 'SELECT * FROM ' + @tableName +' WHERE '

DECLARE columns CURSOR FOR
SELECT sys.columns.name FROM sys.tables
INNER JOIN sys.columns ON sys.columns.object_id = sys.tables.object_id
WHERE sys.tables.name = @tableName

OPEN columns
FETCH NEXT FROM columns
INTO @columnName

WHILE @@FETCH_STATUS = 0

BEGIN

    SET @sql = @sql + @columnName + ' LIKE ''%' + @searchText + '%'' OR '
    FETCH NEXT FROM columns
    INTO @columnName    

END

CLOSE columns;    
DEALLOCATE columns;

SET @sql = LEFT(RTRIM(@sql), LEN(@sql) - 2)

EXEC(@sql)