SQLDay2011_Sesja04_12NajczęstszychBłędówCzyliJakNieNależyPytaćZapytań_MarcinSzeliga
by Polish SQL Server User Group on Oct 23, 2011
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SQL, as well as other programming languages, can achieve the same outcome in different ways. Unfortunately, the bad version of queries is more than correct. During this session we will see how a huge i...
SQL, as well as other programming languages, can achieve the same outcome in different ways. Unfortunately, the bad version of queries is more than correct. During this session we will see how a huge impact on execution time for queries are cursors, scalar functions, related subqueries, variables tabulated, conditional statements, and seven other widely abused SQL language constructs. We’ll find out too, what can we do to improve the performance of our queries.
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