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The following table lists parts. Many parts are contained in another part, called an assembly, and tracked in the AssemblyID column. If a part is
The following table lists parts. Many parts are contained in another part, called an assembly, and tracked in the AssemblyID column. If a part is not contained in another part, the AssemblyID is NULL.
CREATE TABLE Part
PartID SMALLINT,
PartName VARCHAR
AssemblyID SMALLINT,
PRIMARY KEY PartID
FOREIGN KEY AssemblyID REFERENCES PartPartID
;
The following selfjoin selects one row for each part. Each row contains the names of the part and the assembly, if any, containing the part. What XXX completes the query?
SELECT PPartName AS Part, APartName AS Assembly
FROM Part P
XXX;
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