Getting started with SQL SELECT JOIN Example Databases and Tables UPDATE Indexes CREATE TABLE UNION / UNION ALL ALTER TABLE CASE INSERT Primary Keys ORDER BY GROUP BY Filter results using WHERE and HAVING Window Functions Common Table Expressions Views LIKE operator Functions (Aggregate)DELETE String Functions Data Types AND & OR Operators Triggers TRUNCATE MERGE Foreign Keys Finding Duplicates on a Column Subset with Detail Sequence Comments Subqueries Execution blocks Stored Procedures DROP Table Row number Transactions CREATE FUNCTION SQL Group By vs Distinct Table Design cross apply, outer apply Synonyms CREATE Database SKIP TAKE (Pagination)EXPLAIN and DESCRIBE Information Schema IN clause NULL SQL Injection Cascading Delete Order of Execution DROP or DELETE Database EXCEPT TRY/CATCH XML GRANT and REVOKE Functions (Scalar/Single Row)Relational Algebra EXISTS CLAUSE Materialized Views Functions (Analytic)SQL CURSOR Identifier Clean Code in SQL

EXCEPT

Remarks:

EXCEPT returns any distinct values from the dataset to the left of the EXCEPT operator that are not also returned from the right dataset.

Select dataset except where values are in this other dataset

--dataset schemas must be identical
SELECT 'Data1' as 'Column' UNION ALL
SELECT 'Data2' as 'Column' UNION ALL
SELECT 'Data3' as 'Column' UNION ALL
SELECT 'Data4' as 'Column' UNION ALL
SELECT 'Data5' as 'Column'
EXCEPT
SELECT 'Data3' as 'Column'
--Returns Data1, Data2, Data4, and Data5

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