Re: [GENERAL] [HACKERS] Tupple statistics function

2001-09-24 Thread Thurstan R. McDougle
Bruce Momjian wrote: > > > Hi, > > > > I have written a small function that show how many tuples are dead > > etc. in a specified table. Example output is: > > > > test=# select pgstattuple('tellers'); > > NOTICE: physical length: 0.02MB live tuples: 200 (0.01MB, 58.59%) dead tuples: >100 (0.00

Re: [GENERAL] pgdumpall

2001-09-17 Thread Thurstan R. McDougle
The only problem I found using it was with a user large object type used for OLE binary large object data. Dumpall just dumped the OID of the items, not the items themselves There is a -b (dump data and BLOB data) option, if it exists on your version of pg_dump (pg_dumpall passes most parameter

Re: [GENERAL] count of occurences PLUS optimisation

2001-09-14 Thread Thurstan R. McDougle
> On Thu, Sep 13, 2001 at 05:38:56PM +0100, Thurstan R. McDougle wrote: > > What I am talking about is WHEN the sort is required we could make the > > sort more efficient as inserting into a SHORT ordered list should be > > better than building a BIG list and sorting it, then on

Re: [GENERAL] count of occurences PLUS optimisation

2001-09-13 Thread Thurstan R. McDougle
HACKERS: see the end of this message about a possible optimisation for ORDER BY+LIMIT cases (the normal use of LIMIT?) Adam wrote: > > I help run a job database and have a table of search records. I want > a query that will return the top 10 jobs by search frequency. I'm > familiar with ORDER

Re: [GENERAL] Inheritance c.cities ??

2001-09-13 Thread Thurstan R. McDougle
R Talbot wrote: > > Looking at the Postgresql manual in the inheritance section I see > abbreviations. > > i.e. > SELECT c.name, c.altitude > FROM cities* c > WHERE c.altitude > 500; > > c.name of course refering to cities.name > My question is where is there an alias reference of c AS citie