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TDDB77 Databasteknik Fö 4 Olika typer av JOINS Henrik André-Jönsson
JOIN Kartesiskprodukt (Inner) Join Outer Join
Kartesiskprodukt AA’ BB’ A’D’ B’E’ C’F’CX’
Kartesiskprodukt AA’ BB’ A’D’ B’E’AA’ BB’ C’F’AA’ BB’ A’D’ B’E’ C’F’ CX’ C C A’D’ B’E’ C’F’
Inner Join AA’ BB’ A’D’ B’E’ C’F’CX’ Join-villkor: Attribut 2 i relation 1 ska vara lika med attribut1 i relation 2.
Inner Join AA’ D’ BB’ E’
Full Outer Join AA’ BB’ A’D’ B’E’ C’F’CX’ Join-villkor: Attribut 2 i relation 1 ska vara lika med attribut1 i relation 2.
Full Outer Join AA’ D’ BB’ E’ CX’ null C’F’ null
Right Outer Join AA’ BB’ A’D’ B’E’ C’F’CX’ Join-villkor: Attribut 2 i relation 1 ska vara lika med attribut1 i relation 2.
Right Outer Join AA’ D’ BB’ E’ C’F’ null
Left Outer Join AA’ BB’ A’D’ B’E’ C’F’CX’ Join-villkor: Attribut 2 i relation 1 ska vara lika med attribut1 i relation 2.
Left Outer Join AA’ D’ BB’ E’ CX’ null
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