On 2/28/2019 12:54 AM, hele...@iinet.net.au [firebird-support] wrote:
---In firebird-support@yahoogroups.com, <tult...@hughes.net> wrote :
On 2/27/2019 2:44 PM, Robert Tulloch tult...@hughes.net
<mailto:tult...@hughes.net> [firebird-support] wrote:
Hi:
I just ran this
select 'MEMPAY1' AS TABLE_NAME, 'M1ID' AS INDEX_NAME,
cast(RDB$STATISTICS as varchar(32)) as RDB$STATISTICS from rdb$indices
where RDB$SYSTEM_FLAG is null
or RDB$SYSTEM_FLAG = 0 order by RDB$STATISTICS
And it returned 76 "records" all the same table and index but with
different values for RDB$STATISTICS
ranging from 0.0001628664467716590 to 1.000000000000000
Over my head. How can there be 76 different values?
You got what you asked for.
Tthere are 76 tables and 76 indices, all of which have been returned
with the
same name for the table and the index, respectively, due to your
forcing a constant on
each. I have no idea why you think you have to do things like this.
HB
Hi:
Thanks for response. I am trying to return the selectivity for that
unique table/unique index.
Looking at the tables in the database, there is one table with the
unique name and with a unique index.
Running same query on 3 other tables returns 76 records each with the
RDB$STATISTICS values.
I)n IB_SQL I get:
ISC ERROR CODE:335544652
ISC ERROR MESSAGE:
multiple rows in singleton select
STATEMENT:
(TApplication).frmSQL.dsqlEdit
When I run the statistics on the whole database, 76 unique records and
the same RDB$STATISTICS values.
Obviously something wrong with my statements.
Best Robert
