sql - Does "Join" order will lead to different query performance -

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this question has answer here:

i have 2 tables (table1 table2), table2 larger table1.

script 1:

select t1.a, t2.b table1 t1 join table2 t2 on t1.pk = t2.fk

script 2:

select t1.a, t2.b table2 t2 join table1 t1 on t1.pk = t2.fk

does performance script #1 better script #2?

you using inner join answer no.

this produce same amount of data due join type, , joining same relations in both queries, identical.

it have been different if had used left join , because in left join, data master(left) table kept, , matching data details table(right) .

so if had used left join, , placed larger table on left side, query have produced more data , slower put larger table in right side.


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