Search for a string in any column of all tables

问题

For example this is my ID: 07E485

I need to find this ID in all tables wherever it is found

All columns, which might carry this value, are sort of string-type...

Something like: select * from **alltables** where **anyColumn**='07E485'

回答1:

The following query will return all tables in the database yourDBName whose name contains 07E485.

SELECT TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE' AND
      TABLE_CATALOG = 'yourDBName' AND
      TABLE_NAME LIKE '%07E485%'

If I misread your requirement, and you instead wanted to find all tables precisely named 07E485 in any database, then you can use the following query:

SELECT TABLE_NAME
FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_TYPE = 'BASE TABLE' AND
      TABLE_NAME = '07E485'

回答2:

In each database you have a view called INFORMATION_SCHEMA.COLUMNS, you can use this view to query through all of your tables.

This is the way I'ld do it, if anyone know a better way, feel free.. :)

SET NOCOUNT ON
DECLARE @Table varchar(255), @Schema varchar(255), @SQL varchar(MAX)

DECLARE table_cursor CURSOR FOR
    SELECT TABLE_NAME, TABLE_SCHEMA
    FROM INFORMATION_SCHEMA.COLUMNS -- This is a system view where you can see all columns of a database.
    WHERE UPPER(COLUMN_NAME) = 'ID' -- This makes sure you don't loop through any tables that don't have a Column called 'ID'.

    OPEN table_cursor
    FETCH NEXT FROM table_cursor INTO @Table, @Schema
    WHILE @@FETCH_STATUS = 0 BEGIN

        -- This part creates your queries.
        SET @SQL = 'SELECT * FROM '+@Schema+'.'+@Table+'
        WHERE CAST(ID as varchar) = ''07E485''' -- Casting ID to varchar to avoid data type errors.

        -- This executes the query.
        EXEC(@SQL)

        -- If a result is found, i.e. ID is equal to '07E485' somewhere in the table, Table name is printed on the "Messages" tab.
        IF @@ROWCOUNT > 0 PRINT @Table

        FETCH NEXT FROM table_cursor INTO @Table, @Schema
    END
    CLOSE table_cursor
    DEALLOCATE table_cursor

To see which tables contain id = '07E485', go to "Messages" and you will have a list of them.

回答3:

UPDATE My answer completely re-written

Try it like this: This dynamic SQL will check all string-type columns if they are equal to the given search string. You might want to add more data types to the output to get a better look onto the table's row. But one cannot simply put SELECT * as there are data types not allowed in XML without extra effort.

Secondly, by using QUOTENAME, I avoid syntax errors due to column or table names with blanks...

DECLARE @Search VARCHAR(10)='07E485';

DECLARE @cmd VARCHAR(MAX);
WITH TableNames AS
(
    SELECT t.*
          ,t.TABLE_CATALOG + '.' + t.TABLE_SCHEMA + '.' + t.TABLE_NAME AS FullTblName
          ,QUOTENAME(t.TABLE_CATALOG)+ '.' + QUOTENAME(t.TABLE_SCHEMA) + '.' + QUOTENAME(t.TABLE_NAME) AS FullTblNameQuoted
          , 
          STUFF(
          ( 
            SELECT 'OR ' + QUOTENAME(c.COLUMN_NAME) + '=''' + @Search + ''' ' 
            FROM INFORMATION_SCHEMA.COLUMNS AS c
            WHERE c.TABLE_CATALOG=t.TABLE_CATALOG AND c.TABLE_SCHEMA=t.TABLE_SCHEMA AND c.TABLE_NAME=t.TABLE_NAME
              AND DATA_TYPE LIKE '%char%'  --add more types if needed
            FOR XML PATH('')      
          ),1,3,'') AS WhereFilter

    FROM INFORMATION_SCHEMA.TABLES AS t
    WHERE TABLE_TYPE='BASE TABLE'
)
SELECT @cmd = STUFF(
(
    SELECT DISTINCT 'UNION ALL SELECT (SELECT ' + (SELECT STUFF((SELECT ',' + QUOTENAME(COLUMN_NAME) 
                                                                 FROM INFORMATION_SCHEMA.COLUMNS AS c 
                                                                 WHERE c.TABLE_CATALOG=TableNames.TABLE_CATALOG 
                                                                   AND c.TABLE_NAME =TableNames.TABLE_NAME 
                                                                   AND c.DATA_TYPE LIKE '%char%' 
                                                                 FOR XML PATH('')),1,1,'')) + ' FROM ' + FullTblNameQuoted 
                    + ' WHERE ' + WhereFilter
                    + ' FOR XML PATH(''row''),ROOT(''' +  REPLACE(REPLACE(FullTblName,'.','_'),' ','') + '''),TYPE) AS XmlData '
    FROM TableNames
    WHERE WhereFilter IS NOT NULL
    FOR XML PATH('')
),1,10,'')

SET @cmd='SELECT XmlData FROM(' +  @cmd + ') AS tbl WHERE XmlData IS NOT NULL;'
PRINT LEN(@cmd)
EXEC(@cmd)

来源：https://stackoverflow.com/questions/38915800/search-for-a-string-in-any-column-of-all-tables

标签

sql-server