I tried dropping that index, but sql execution time is still same i.e. 1.893
seconds.
On Thursday, 16 April 2015 2:15 PM, Vishal Tiwari
<[email protected]> wrote:
Sorry SET, but this is an existing database, I understand your point and
completely agree with you. Shall I try droping that index then ? What you
suggest ?
On Thursday, 16 April 2015 1:35 PM, "Svein Erling Tysvær
[email protected] [firebird-support]"
<[email protected]> wrote:
>CRM_DOCUMENT_HEADER Table - PK_DOCUMENT_HEADER is primary key and having
seperate index on this column as well
What do you mean by this, Vishal?
I think it was fixed a while ago, but duplicate indexes used to confuse the
optimizer, so PK_DOCUMENT_HEADER ought not to be both the primary key and have
a separate single-field index (unless the PK or index is DESCENDING or consists
of more than one field) - at best it makes INSERTs marginally slower due to
having to maintain two identical indexes.
Set
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