I'm trying to figure out how to exclude items from a select statement from table A using an exclusion list from table B. The catch is that I'm excluding based on the prefix of a field.
So a field value maybe "FORD Muffler" and to exclude it from a basic query I would do:
SELECT FieldName
FROM TableName
WHERE UPPER(ColumnName) NOT LIKE 'FORD%'
But to use a list of values to exclude from a different tabel I would use a Subquery like:
SELECT FieldName
FROM TableName
WHERE UPPER(ColumnName) NOT IN (Select FieldName2 FROM TableName2)
The problem is that it only excludes exact matches and not LIKE or Wildcards (%).
How can I accomplish this task? Redesigning the table isn't an option as it is an existing table in use.
EDIT: Sorry I am using SQL Server (2005).
I think this will do it:
SELECT FieldName
FROM TableName
LEFT JOIN TableName2 ON UPPER(ColumnName) LIKE TableName2.FieldName2 + '%'
WHERE TableName2.FieldName2 IS NULL
Dunno how efficient this would be, but it should work:
SELECT FieldName
FROM TableName t1
WHERE NOT EXISTS (
SELECT *
FROM TableName2 t2
WHERE t1.FieldName LIKE t2.FieldName2 + '%'
)
SELECT * FROM table_A
LEFT OUTER JOIN table_B
ON (locate(table_b.column, UPPER(table_a.column)) == 1)
WHERE table_b.column IS NULL
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