check valid value exist after first semicolon - sql

Question

may anyone please help me if possible
I am trying to check whether data in NONVALID column of #APPLICATION table contain remarks_1 value
which is present in #ATTRIBUTE table
we can join the table with SKU as key column
Table
DECLARE #ATTRIBUTE TABLE
(
SKU VARCHAR (50),
REMARKS_1 VARCHAR (50)
)
INSERT #ATTRIBUTE
SELECT 'AMRN205-740','P-215-40-18;' UNION ALL
SELECT 'NATN205-740','LT-275-65-20' UNION ALL
SELECT 'NATN205-740','XX-275-65-20'
DECLARE #APPLICATION TABLE
(
SKU VARCHAR (50),
NONVALID VARCHAR (50)
)
INSERT #APPLICATION
SELECT 'AMRN205-740','Plus Size; P-215-40-18; 87H' UNION ALL
SELECT 'BCTN205-740','Plus Size; P-215-40-18; 86H' UNION ALL
SELECT 'NATN205-740','Plus Size; 86H' UNION ALL
SELECT 'AMRN205-740', NULL union all
SELECT 'BCTN205-740','P-215-40-18; 86H' UNION ALL
SELECT ''BCTN205-740', ;86H'
EXPECTED OUTPUT
'NATN205-740','Plus Size; 86H'
'BCTN205-740','P-215-40-18; 86H'-- plus size or semi-plus size before first semicolon in a string is missing
BCTN205-740', ;86H'-- plus size or semi-plus size before first semicolon in a string
AS AFTER FIRST SEMICOLON it does not contain either LT-275-65-20 or XX-275-65-20
Thanks a lot

Answer 1

I advice you to normalize better your tables:
I like prefer a table for SKU list named SKU as follow:
CREATE TABLE sku
(id int, name varchar(100))
id is a PK, name has the content of your field SKU (of your #attribute table)
CREATE TABLE attribute
(id int,
fk_sku int,
name varchar(100))
where you have attribute linked SKU
And finally,
CREATE TABLE application
(id int,
fk_sku int,
fk_attribute int) <-- if you want to store this info or another I don't know
Try this:
SELECT *
FROM #APPLICATION app
WHERE NOT EXISTS(
SELECT 'ATTRIBUTE'
FROM #ATTRIBUTE att
WHERE att.SKU = app.SKU
AND PATINDEX('%' + att.REMARKS_1 + '%', app.NONVALID) > 0
)
and app.NONVALID IS NOT NULL
This query returns 'NATN205-740','Plus Size; 86H' and 'BCTN205-740','Plus Size; P-215-40-18; 86H'
If you want only 'NATN205-740','Plus Size; 86H' so:
SELECT *
FROM #APPLICATION app
WHERE EXISTS(
SELECT 'ATTRIBUTE'
FROM #ATTRIBUTE att
WHERE att.SKU = app.SKU
)
AND NOT EXISTS(
SELECT 'ATTRIBUTE'
FROM #ATTRIBUTE att
WHERE att.SKU = app.SKU
AND PATINDEX('%' + att.REMARKS_1 + '%', app.NONVALID) > 0
)
and app.NONVALID IS NOT NULL