'Set level operation' diaporamas de présentation

SQL Unit 7 Set Operations

SQL Unit 7 Set Operations. Kirk Scott. 7.1 Introduction 7.2 UNION Queries 7.3 Queries with IN (Intersection) 7.4 Queries with NOT IN (Set Subtraction) 7.5 Unions, Joins, and Outer Joins. 7.1 Introduction. 1. The technical term for a table is a relation. A relation is like a set.

1.07k views • 98 slides

SQL Unit 6 Set Operations

SQL Unit 6 Set Operations. Kirk Scott. 6.1 Introduction 6.2 UNION Queries 6.3 Queries with IN (Intersection) 6.4 Queries with NOT IN (Set Subtraction) 6.5 Unions, Joins, and Outer Joins. 6.1 Introduction.

1.58k views • 90 slides

Data recovery

443 views • 28 slides