Use Delete From without a where clause to truncate a table or drop and recreate it.
You should look at the getting started doc about loading the voc data on the MonetDB website. They show creating a user, a schema and then setting the default schema for the user. One bit of confusion I had when getting started is that when you connect with the URL and refer to a database, it's the name of the database created with the monetdbd command, not the schema. So you actually have to either create a user with a default schema or execute a SET SCHEMA command. This will straighten out your bulk loads too.
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On Mar 17, 2013, at 5:56 AM, Diethard Steiner diethard.steiner@gmail.com wrote:
Many thanks for pointing this out!
- I had a look at this table, but couldn't find any trunc function:
SELECT * FROM sys.functions WHERE name LIKE '%extract%'; SELECT * FROM sys.functions WHERE func LIKE '%extract%'; 2) Moreover I am not quite sure how to read this table ... in example the name/function mod shows up several times with completely identical records. 3) In mclient, something like \d sys.* does not show me any of the tables. How can I see them? I can queried them though. I am logged on as monetdb user. [In Squirrel I can see them though in the object browser] 4) Is there a way to configure the default schema? For some reason tables imported like shown below end up in the sys schema (ideally I should have used below schema.table, but I'd still like to understand how to define a default schema, especially as I read somewhere that normally the default schema is tmp): COPY 150000 RECORDS INTO customer FROM '/home/ec2-user/tpch_tables/customer.tbl'; Many thanks, Diethard
On Sat, Mar 16, 2013 at 5:06 PM, Gennadiy gennadiy_g@sympatico.ca wrote:
You can obtain list of functions by executing the following query:
select * from sys.functions;
Gennadiy
On Sat, 16 Mar 2013 16:36:23 +0000 Diethard Steiner diethard.steiner@gmail.com wrote:
Hi Niels, Thanks a lot for clarifying this! Is there actually somewhere a detailed listing of all the supported functions? I couldn't find any info on this in the MonetDB SQL Documentation (unless of course I was not looking carefully enough). I was just trying various functions that I know from other DBs to extract the date/time part until I got one of them working, which is a bit tedious. It would be excellent if there was a documentation on date/time and string functions. Best regards, Diethard
On Sat, Mar 16, 2013 at 9:54 AM, Niels Nes Niels.Nes@cwi.nl wrote:
On Fri, Mar 15, 2013 at 05:26:53PM +0000, Diethard Steiner wrote:
Hi, When I run this: SELECT DISTINCT(EXTRACT(QUARTER FROM o_orderdate)) FROM orders;
I get following error: Error: syntax error, unexpected IDENT in: "select distinct(extract (quarter" SQLState: 42000 ErrorCode: 0
Is Quarter not supported or is this a bug? Extract Year, month, day are all working fine.
Environment: RHEL (Amazon Linux), Latest version of MonetDB compiled from source code.
Thanks, Diethard
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The EXTRACT functionality is limited to Year, Month, day, hour, minute, and second.
Niels
-- Niels Nes, Centrum Wiskunde & Informatica (CWI) Science Park 123, 1098 XG Amsterdam, The Netherlands room L3.14, phone ++31 20 592-4098 sip:4098@sip.cwi.nl url: http://www.cwi.nl/~niels e-mail: Niels.Nes@cwi.nl
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