SQL Server：在所有表中搜索列中具有特定值的所有行

Question

(I've seen a couple of other posts about this on StackOverflow -- specifically this and this , but they both seem to be Oracle-specific, and I'm using SQL Server.)

So I've used this post to get all tables that have a specific column. That part works great, and it returns me over 100 tables. This is what I'm using, from that post:

SELECT      c.name  AS 'ColumnName'
            ,t.name AS 'TableName'
FROM        sys.columns c
JOIN        sys.tables  t   ON c.object_id = t.object_id
WHERE       c.name LIKE 'myColumn'
ORDER BY    TableName
            ,ColumnName;

What I'm now looking for is a modification to that -- is there a way to get all of the rows in each of those tables where my target column name has a specific value? Basically, I want to be able to rip through every table in the system and select every row where a specific column name has a specific value. (I'll be trying to delete all those rows later, but SELECT first, DELETE later.)

Something along the lines of this (which I know doesn't work; it's for illustration purposes):

SELECT [row]
    FROM sys.tables tab
    JOIN sys.columns col ON col.object_id = tab.object_id
    WHERE col.name LIKE 'myColumn' AND col.value = 'myVal'

The only other option I can think of is to take the output from the first query and run a SELECT on each one, which would give me unwieldy output in SQL Server Management Studio, to say the least.

Is there a simple way to go about this, without resorting to external tools or whatnot?

Answer 1

Use INFORMATION_SCHEMA catalogs.

SELECT TABLE_CATALOG, TABLE_NAME, COLUMN_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE COLUMN_NAME LIKE '%SOME_TEXT%'
ORDER BY TABLE_CATALOG, TABLE_NAME, COLUMN_NAME

Check it here: http://rextester.com/JPEZN41582

Answer 2

below is what i used to find all tables containing specific value for a specific column name

DECLARE @TableName varchar(250);
DECLARE @SearchValue varchar(250) = 'myVar';
DECLARE @SearchColumn varchar(250)  = 'MyColumn';
DECLARE @SQLQuery AS NVARCHAR(500);

CREATE TABLE #TempTable(
TableName varchar(250)
)

DECLARE CUR_TEST CURSOR FAST_FORWARD FOR
    SELECT     t.name AS 'TableName'
    FROM        sys.columns c
    JOIN        sys.tables  t   ON c.object_id = t.object_id
    WHERE       c.name = @SearchColumn
    ORDER BY    TableName;

OPEN CUR_TEST
FETCH NEXT FROM CUR_TEST INTO @TableName

WHILE @@FETCH_STATUS = 0
BEGIN
    SET @SQLQuery = 'insert into #TempTable(TableName) 
    select DISTINCT ''' + @TableName + ''' from ' + @TableName + ' WHERE ' + @SearchColumn + ' = ''' + @SearchValue + ''''

    EXECUTE sp_executesql @SQLQuery

   FETCH NEXT FROM CUR_TEST INTO @TableName
END
CLOSE CUR_TEST
DEALLOCATE CUR_TEST
GO

select * from #TempTable
Drop Table #TempTable