IS IT POSSIBLE THAT THERE R TWO PRIMARY KEY WILL BE IN A
SAME TABLE?PLZ HELP ME BY GIVING THE ANSWER.THANK U.
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Answer Posted / tdguy
There can be more than one primary key in TD. But PI should
always be one and can contain upto 16 columns. Performance
of Teradata is directly linked to PI. Row hash value (32
bit) is calculated from PI using the hashing function. This
hash value along with the uniqueness id (32 bit value)
helps in locating the amp.
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