SQL Server how to find specific data across entire database - sql

Question

I have this script which finds all tables that contain data in column RGNCODE. I'm trying to amend this to find tables that contain a specific value for rgncode across all tables. So RGNCODE = 'UK'. Unsure where to add this in?
SELECT
sys.columns.name AS ColumnName,
tables.name AS TableName
FROM sys.columns
JOIN sys.tables ON sys.columns.object_id = tables.object_id
WHERE
sys.columns.name = 'rgncode' and
tables.name in (
SELECT [TableName] = so.name
FROM sysobjects so, sysindexes si
WHERE so.xtype = 'U' AND si.id = so.id
GROUP BY so.name
HAVING max(si.rows) > 0
)

Answer 1

A dynamic statement, using system catalog views, is an option here:
DECLARE #stm nvarchar(max) = N''
SELECT #stm = #stm +
CASE WHEN #stm = N'' THEN '' ELSE N'UNION ALL ' END +
N'SELECT ''' +
QUOTENAME(sch.[name]) + '.' + QUOTENAME(tab.[name]) + ''' AS TableName FROM ' +
QUOTENAME(sch.[name]) + '.' + QUOTENAME(tab.[name]) +
N' WHERE RGNCODE = ''UK'' HAVING COUNT(*) > 0 '
FROM sys.columns col
JOIN sys.tables tab ON col.object_id = tab.object_id
JOIN sys.schemas sch ON tab.schema_id = sch.schema_id
WHERE col.[name] = 'RGNCODE'
PRINT #stm
EXEC sp_executesql #stm

Answer 2

I think the following cursor will help you:
CREATE TABLE ##DataTable
(TblName VARCHAR(100),RowNum INT)
GO
DECLARE #TableName AS VARCHAR(200)
DECLARE #SQLText AS nVARCHAR(MAX)
DECLARE #TableCount AS INT
DECLARE TableDect CURSOR
FOR
SELECT
tables.name AS TableName
FROM
sys.columns
JOIN sys.tables ON
sys.columns.object_id = tables.object_id
WHERE
sys.columns.name = 'rgncode' and tables.name in (
SELECT
[TableName] = so.name
FROM
sysobjects so,
sysindexes si
WHERE
so.xtype = 'U'
AND
si.id = so.id
GROUP BY
so.name
HAVING max(si.rows) >0 )
OPEN TableDect
FETCH NEXT FROM TableDect INTO #TableName
WHILE ##FETCH_STATUS = 0
BEGIN
SET #SQLText = N'SELECT #NumberOUT=COUNT(*) FROM ' + QUOTENAME(#TableName) + ' WHERE rgncode=''UK'''
SET #TableCount = 0
EXECUTE sp_executesql #SQLText ,N'#NumberOUT nvarchar(25) OUTPUT' ,#NumberOUT=#TableCount OUTPUT
INSERT INTO ##DataTable values(#TableName,#TableCount)
FETCH NEXT FROM TableDect INTO #TableName
END
CLOSE TableDect;
DEALLOCATE TableDect
SELECT * FROM ##DataTable