which is better one big query or multiple small query?
As a rule of thumb, the less queries the better.
This is a good question but this has been answered multiple times.
Is it better to return one big query or a few smaller ones?
Multiple small queries vs a single long query. Which one is more efficient?
One big query vs. many small ones?
Which one is faster single big query or few small queries?
What is faster, a big joined query with more PHP or multiple small selects with less PHP?
Should I use one big SQL Select statement or several small ones?
https://dba.stackexchange.com/questions/76973/what-is-faster-one-big-query-or-many-small-queries
Bry
Updated on May 23, 2020Comments
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Bry almost 4 years
which is better and efficient? one big query then just process the fetched query in the php or from php function will just create a loop function that queries small data. Please consider also that the table can be big (thousands of raw). Thanks.
Comments table
id | parent | msg ---+--------+--------- 1 | 0 | hello 2 | 1 | hi 3 | 2 | whats up 4 | 3 | yow 5 | 1 | hellow 6 | 2 | nice 7 | 0 | great
Expected output is this:
Array ( [0] => Array ( [id] => 1 [parent] => 0 [value] => hello [child] => Array ( [0] => Array ( [id] => 2 [parent] => 1 [value] => hi [child] => Array ( [0] => Array ( [id] => 3 [parent] => 2 [value] => whats up [child] => Array ( [0] => Array ( [id] => 4 [parent] => 3 [value] => yow ) ) ) [1] => Array ( [id] => 6 [parent] => 2 [value] => nice ) ) ) [1] => Array ( [id] => 5 [parent] => 1 [value] => hellow ) ) ) [1] => Array ( [id] => 7 [parent] => 0 [value] => great )
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Bry almost 8 yearsSorry I just found 1 question regarding this last time I check. Thanks for the links @techie :)