Split comma delimited string and insert to a table (int)

Question

i have a table with 3 columns (First_ID,Second_ID,Third_ID) all columns are int columns.

Now I have 3 values, first and third values are int values (1 a

Answer 1

DECLARE @Table VARCHAR(100)='AAA,BBB,CCC,DDD'
IF OBJECT_ID('[Comma_Split]') IS NOT NULL
DROP TABLE [Comma_Split]
CREATE TABLE [Comma_Split](ID INT IDENTITY(1,1),COL VARCHAR(100))
while LEN(@Table)>0
BEGIN
DECLARE @COMMA INT= CHARINDEX(',', @Table)
IF @COMMA=0 SET @COMMA=LEN(@Table)+1
INSERT INTO [Comma_Split]
SELECT SUBSTRING(@Table,1,@COMMA-1)
SET @COMMA=@COMMA+1
SET @Table=SUBSTRING(@Table,@COMMA,LEN(@Table))
END