Am Donnerstag, 29. September 2005 21:44 schrieb Sergei Dubov:
select * from table_a where table_b_id=1,
will the query use an index? Will this be true when I do join on this
table?
It could use the index, but whether it will depends on the particular data
distribution. The EXPLAIN command
Sergei Dubov wrote:
This will automatically create a unique index on the primary key.
Well, if I do a query later like:
select * from table_a where table_b_id=1,
will the query use an index? Will this be true when I do join on this
table?
Yes to both (if the query plan thinks that is the
Hi guys,
I'd really appreciate if you could clarify this to me. Let's say I have
a table named TABLE_A that is a bridge to many-to-many relationship
between TABLE_B and TABLE_C, as such here is my declaration:
CREATE TABLE table_a (
table_b_idINT4NOT NULL
REFERENCES
On 9/30/05, Sergei Dubov [EMAIL PROTECTED] wrote:
Hi guys,I'd really appreciate if you could clarify this to me. Let's say I havea table named TABLE_A that is a bridge to many-to-many relationshipbetween TABLE_B and TABLE_C, as such here is my declaration:
CREATE TABLE table_a (table_b_idINT4NOT
Hi guys,
I'd really appreciate if you could clarify this to me. Let's say I have
a table named TABLE_A that is a bridge to many-to-many relationship
between TABLE_B and TABLE_C, as such here is my declaration:
CREATE TABLE table_a (
table_b_id INT4NOT NULL
