Re: How does postgres behave if several indexes have (nearly) identical conditions?

create index index_001 on my_table using btree (a001,a002,a003) where a001=true and a002=false;

create index index_002 on my_table using btree (a003) where a001=true and a002=false;

Now take this query:

select * from my_table where a001=true;

Which index will postgres pick? I'm wondering how postgres goes about picking an index to consider.