Jan Gomes wrote:
Hy Guys,
I needed denormalized my table to obtain high performance, but i want best
appropriate the space.
I joint two column (of the JOIN) intro one column with two separadores (# and ;)
Example:
ID | column_1 | column_denormalized
1 | Test | 1#20202;5#1000101;
It has some method to minimize the space(disk space) required for this
separadores ? Like some character that i
can use for minimize the table size?
PS: The table has 20.000.000 of rows with 2 GB data length.
I don't see a question here.
But that won't stop me from giving a little advice :)
It is generally more important to keep things simple (by not
denormalizing) than to try to optimize performance by complicating
things significantly.
Moreover, I can't see how combining several columns into one will
improve performance. I would think it will slow things down whenever you
have to retrieve data, particular if you query against anything in column 3.
And now you say you want to save disk space by compressing the field
separators in your combined column?
Forget it all! Go back to a fully normalized design. If you have
problems, post them here.
-J
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