Count references to specific row from all referencing tables - sql

Question

Right now I have code that lists all referencing tables and than I can count references from tables one by one.
Query 1:
SELECT t.NAME AS TableWithForeignKey,
c.NAME AS ForeignKeyColumn
FROM sys.foreign_key_columns AS fk
INNER JOIN sys.tables AS t
ON fk.parent_object_id = t.object_id
INNER JOIN sys.columns AS c
ON fk.parent_object_id = c.object_id
AND fk.parent_column_id = c.column_id
WHERE fk.referenced_object_id = (
SELECT object_id
FROM sys.tables
WHERE NAME = 'MAIN_TABLE'
)
Query 2:
SELECT COUNT(MAIN_ID)
FROM MAIN_TABLE
INNER JOIN REF_TABLE_1
ON MAIN_TABLE.ID = REF_TABLE_1.MAIN_ID
Query 3:
SELECT COUNT(MAIN_ID)
FROM MAIN_TABLE
INNER JOIN REF_TABLE_2
ON MAIN_TABLE.ID = REF_TABLE_2.MAIN_ID
etc.
Is it possible to have it in one query?

Answer 1

I have tried to solve it by using the sql block statement rather than a single query. Please try to use if it solves your problem. You can create a stored proc for it as well.
BEGIN
CREATE TABLE #tempTable (TName NVARCHAR(100), FKey NVARCHAR(100), RCount BIGINT)
INSERT INTO #tempTable(TName, FKey)
SELECT t.NAME AS TableWithForeignKey,
c.NAME AS ForeignKeyColumn
FROM sys.foreign_key_columns AS fk
INNER JOIN sys.tables AS t
ON fk.parent_object_id = t.object_id
INNER JOIN sys.columns AS c
ON fk.parent_object_id = c.object_id
AND fk.parent_column_id = c.column_id
WHERE fk.referenced_object_id = (
SELECT object_id
FROM sys.tables
WHERE NAME = ''MAIN_TABLE'
)
SELECT * FROM #tempTable
DECLARE tempT CURSOR FOR SELECT TName FROM #tempTable
DECLARE #tn NVARCHAR(100)
OPEN tempT
FETCH NEXT FROM tempT INTO #tn
WHILE ##FETCH_STATUS = 0
BEGIN
EXEC (N'UPDATE #tempTable SET RCount = (SELECT COUNT(*) FROM ' + #tn + ') WHERE TName =''' + #tn + '''')
FETCH NEXT FROM tempT INTO #tn
END
CLOSE tempT;
DEALLOCATE tempT;
SELECT * FROM #tempTable
DROP TABLE #tempTable
END