Hi all,
I have a couple different ways to get results out of my table
structure, but I'm unsure which way is faster or less expensive to
run:
Option 1: Query a table of 4 million rows, on 4 indexed columns. It
will return 1 row:
SELECT field1, field2, field3, field4
FROM tablea
WHERE field1 = $1 AND field2 = $2 AND field3 = $3 AND field4 = $4
Option 2: Query a table of 200,000 rows on 1 indexed column. It will
return 800 rows:
SELECT *
FROM tableb
WHERE field1 = $1
Which one is going to return results the fastest, with the least
expense to the database server?
