December 2020 - users-list

[MonetDB-users] Books CDs
by CHARTS LICENSING 11 Aug '24

11 Aug '24

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Multi-column update based on joined table
by Lee Hachadoorian 11 Aug '24

11 Aug '24

I need to update multiple columns (~250) from one table to another based on a two-column key. In Postgres I would write this using the FROM clause, but since MonetDB doesn't support the FROM clause, I've successfully updated one column with: UPDATE census.acs2010_5yr SET b07401001 = ( SELECT CAST(b07401001 AS int) FROM acs2010_5yr.tmp_seq0001 WHERE acs2010_5yr.stusab = tmp_seq0001.stusab AND acs2010_5yr.logrecno = tmp_seq0001.logrecno ); My question is whether there is any benefit to writing a multiple column update into a single UPDATE statement: UPDATE target_table SET column1 = (SELECT column1 FROM source_table WHERE target_table.key = source_table.key), column2 = (SELECT column2 FROM source_table WHERE target_table.key = source_table.key), ..., columnN = (SELECT columnN FROM source_table WHERE target_table.key = source_table.key); On Postgres I believe the multi-column update using a table join would only have to do the sequential scan of each table once, but with the necessity of sub-selects in MonetDB, what is the backend doing? Is it already doing an index scan once for each row in the single column case, then doing it once for each row * column in the multi-column case? Best, --Lee -- Lee Hachadoorian Asst Professor of Geography, Dartmouth College http://freecity.commons.gc.cuny.edu/

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[MonetDB-users] XQuery API and XLink/XUpdate support
by Alexandra Mart�nez 27 Jun '24

27 Jun '24

Hello all, I was wondering if there is any documentation about the API for XQuery (i.e., how to write xqueries from a Java program). Also, I am interested in using some features of XLink and XUpdate on top of my XML database. Is support for any of these in progress? Thanks in advance, Alexandra ______________________________________________________ Click here to donate to the Hurricane Katrina relief effort. http://store.yahoo.com/redcross-donate3/

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[MonetDB-users] Proofreading your professional documents
by Richard Hounslow 24 Feb '24

24 Feb '24

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SELinux problems
by Arjen P. de Vries 29 Dec '21

29 Dec '21

Hi all, Not really a bug report because I did not manage to figure out the cause. However, after upgrading from FC31 to FC32 I could not login any more, due to SELinux problems. Auto-relabeling did not work, nothing really... ... until I did dnf uninstall MonetDB-selinux. I came to this point because trying to give systemd services the correct labels with restorecon failed with an error referencing a monetdb specific file. I do not have the details unfortunately, but if you get problems, beware that MonetDB SELinux package and systemd may interfere in some way beyond my knowledge of these services. Best regards, Arjen PS: Some output from logs: sudo ausearch -c monetdb -m AVC,SELINUX_ERR [..] ---- time->Sat May 2 20:57:01 2020 type=AVC msg=audit(1588445821.693:203): avc: denied { open } for pid=1232 comm="monetdbd" path="/etc/resolv.conf" dev="dm-0" ino=3409775 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:default_t:s0 tclass=file permissive=1 ---- time->Sat May 2 21:12:56 2020 type=AVC msg=audit(1588446776.043:1194): avc: denied { execute } for pid=2861 comm="(monetdbd)" name="monetdbd" dev="dm-0" ino=2147256 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=file permissive=1 trawcon="unconfined_u:object_r:monetdbd_exec_t:s0" ---- time->Sat May 2 21:12:56 2020 type=AVC msg=audit(1588446776.043:1195): avc: denied { execute_no_trans } for pid=2861 comm="(monetdbd)" path="/usr/bin/monetdbd" dev="dm-0" ino=2147256 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=file permissive=1 trawcon="unconfined_u:object_r:monetdbd_exec_t:s0" ---- time->Sat May 2 21:12:56 2020 type=AVC msg=audit(1588446776.044:1196): avc: denied { map } for pid=2861 comm="monetdbd" path="/usr/bin/monetdbd" dev="dm-0" ino=2147256 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=file permissive=1 trawcon="unconfined_u:object_r:monetdbd_exec_t:s0" ---- time->Sat May 2 21:12:56 2020 type=AVC msg=audit(1588446776.714:1197): avc: denied { remove_name } for pid=1232 comm="monetdbd" name="merovingian.pid" dev="tmpfs" ino=34369 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=dir permissive=1 trawcon="system_u:object_r:monetdbd_var_run_t:s0" ---- time->Sat May 2 21:12:56 2020 type=AVC msg=audit(1588446776.714:1198): avc: denied { unlink } for pid=1232 comm="monetdbd" name="merovingian.pid" dev="tmpfs" ino=34369 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=file permissive=1 ---- time->Sat May 2 21:12:56 2020 type=AVC msg=audit(1588446776.714:1199): avc: denied { write } for pid=1232 comm="monetdbd" name=".merovingian_lock" dev="dm-0" ino=5899443 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=file permissive=1 trawcon="system_u:object_r:monetdbd_lock_t:s0" ---- time->Sat May 2 21:13:15 2020 type=AVC msg=audit(1588446795.214:1209): avc: denied { read } for pid=2925 comm="(monetdbd)" name="passwd" dev="dm-0" ino=524514 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:var_t:s0 tclass=file permissive=1 ---- time->Sat May 2 21:13:15 2020 type=AVC msg=audit(1588446795.214:1210): avc: denied { open } for pid=2925 comm="(monetdbd)" path="/var/lib/sss/mc/passwd" dev="dm-0" ino=524514 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:var_t:s0 tclass=file permissive=1 ---- time->Sat May 2 21:13:15 2020 type=AVC msg=audit(1588446795.214:1211): avc: denied { map } for pid=2925 comm="(monetdbd)" path="/var/lib/sss/mc/passwd" dev="dm-0" ino=524514 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:var_t:s0 tclass=file permissive=1 ---- time->Sat May 2 21:14:24 2020 type=AVC msg=audit(1588446864.487:1281): avc: denied { read } for pid=3072 comm="(monetdbd)" name="passwd" dev="dm-0" ino=524514 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:var_t:s0 tclass=file permissive=1 ---- time->Sat May 2 21:14:24 2020 type=AVC msg=audit(1588446864.487:1282): avc: denied { open } for pid=3072 comm="(monetdbd)" path="/var/lib/sss/mc/passwd" dev="dm-0" ino=524514 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:var_t:s0 tclass=file permissive=1 ---- time->Sat May 2 21:14:24 2020 type=AVC msg=audit(1588446864.487:1283): avc: denied { map } for pid=3072 comm="(monetdbd)" path="/var/lib/sss/mc/passwd" dev="dm-0" ino=524514 scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:var_t:s0 tclass=file permissive=1 -- ==================================================================== ICIS, office M1.00.05 Radboud University Mercator 1 Faculty of Science Toernooiveld 212 arjen(a)cs.ru.nl NL-6525 EC Nijmegen, The Netherlands +31-(0)24-365 2354 ===================== http://www.informagus.nl/ ==================== -- ==================================================================== ICIS, office M1.00.05 Radboud University Mercator 1 Faculty of Science Toernooiveld 212 arjen(a)cs.ru.nl NL-6525 EC Nijmegen, The Netherlands +31-(0)24-365 2354 ===================== http://www.informagus.nl/ ====================

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Re: MonetDB-PHP Error on parameterized query with timestamp
by Kevork Vartanian 09 Dec '20

09 Dec '20

Thank you Ying and everyone involved. Regards, Kevork Vartanian ________________________________ From: users-list <users-list-bounces+kev=innotta.com.au(a)monetdb.org> on behalf of users-list-request(a)monetdb.org <users-list-request(a)monetdb.org> Sent: Thursday, 10 December 2020 1:56 AM To: users-list(a)monetdb.org <users-list(a)monetdb.org> Subject: users-list Digest, Vol 100, Issue 5 Send users-list mailing list submissions to users-list(a)monetdb.org To subscribe or unsubscribe via the World Wide Web, visit https://www.monetdb.org/mailman/listinfo/users-list or, via email, send a message with subject or body 'help' to users-list-request(a)monetdb.org You can reach the person managing the list at users-list-owner(a)monetdb.org When replying, please edit your Subject line so it is more specific than "Re: Contents of users-list digest..." Today's Topics: 1. Re: MonetDB-PHP Error on parameterized query with timestamp (Ying Zhang) ---------------------------------------------------------------------- Message: 1 Date: Wed, 9 Dec 2020 15:56:28 +0100 From: Ying Zhang <Y.Zhang(a)cwi.nl> To: Communication channel for MonetDB users <users-list(a)monetdb.org> Subject: Re: MonetDB-PHP Error on parameterized query with timestamp Message-ID: <6F309253-9D88-4E52-B079-2F2CBDCF1B81(a)cwi.nl> Content-Type: text/plain; charset="us-ascii" FYI, this error has really been resolved. Deployed a fix under version 1.1.3., for more info see Stack Overflow: - https://stackoverflow.com/questions/65077831/monetdb-php-error-on-parameter… <https://stackoverflow.com/questions/65077831/monetdb-php-error-on-parameter…> Updated the user doc: - https://github.com/MonetDB/MonetDB-PHP#example-3-parameterized-query-with-p… <https://github.com/MonetDB/MonetDB-PHP#example-3-parameterized-query-with-p…> And the protocol doc: - https://github.com/MonetDB/MonetDB-PHP/blob/master/protocol_doc/README.md#7… <https://github.com/MonetDB/MonetDB-PHP/blob/master/protocol_doc/README.md#7…> > On 8 Dec 2020, at 10:45, Ying Zhang <Y.Zhang(a)cwi.nl> wrote: > > Hai Kevork, > > Our MonetDB/PHP expert has answered this question in Stack Overflow: > > https://stackoverflow.com/questions/65077831/monetdb-php-error-on-parameter… <https://stackoverflow.com/questions/65077831/monetdb-php-error-on-parameter…> > > For users on this list, this is the Stack Overflow answer: > > the problem is that the "birth_date" field is not of a "date-time" type, but it's "date" only. So just remove "12:37:16" and it will work. The "char" type is converted to "date" by MonetDB itself, "date" doesn't have a specific literal in the SQL language. This works, I tested: > > $result = $connection->Query(<<<EOF > select > * > from > "cats" > where > "name" = ? > and "weight_kg" > ? > and "birth_date" < ? > limit > 10 > EOF > , [ "D'artagnan", 5.3, "2020-02-28" ]); > > Regards, > Jennie > >> On 7 Dec 2020, at 04:23, Kevork Vartanian <kev(a)innotta.com.au <mailto:kev@innotta.com.au>> wrote: >> >> Hi Sjoerd, >> >> Thank you for getting back to me. >> >> My colleague tested what you suggested and got the same error so it is still failing. He is certain he is passing the correct value as he is able to execute the same query in raw format, so he believed it has to do with the way params are implemented. I'm no expert but he said it looks like an error from C language. >> >> Please advise. >> >> Thank you. >> >> Regards, >> >> Kevork Vartanian >> >> From: users-list <users-list-bounces+kev=innotta.com.au(a)monetdb.org <mailto:users-list-bounces+kev=innotta.com.au@monetdb.org>> on behalf of users-list-request(a)monetdb.org <mailto:users-list-request@monetdb.org> <users-list-request(a)monetdb.org <mailto:users-list-request@monetdb.org>> >> Sent: Friday, 4 December 2020 10:00 PM >> To: users-list(a)monetdb.org <mailto:users-list@monetdb.org> <users-list(a)monetdb.org <mailto:users-list@monetdb.org>> >> Subject: users-list Digest, Vol 100, Issue 2 >> >> Send users-list mailing list submissions to >> users-list(a)monetdb.org <mailto:users-list@monetdb.org> >> >> To subscribe or unsubscribe via the World Wide Web, visit >> https://www.monetdb.org/mailman/listinfo/users-list <https://www.monetdb.org/mailman/listinfo/users-list> >> or, via email, send a message with subject or body 'help' to >> users-list-request(a)monetdb.org <mailto:users-list-request@monetdb.org> >> >> You can reach the person managing the list at >> users-list-owner(a)monetdb.org <mailto:users-list-owner@monetdb.org> >> >> When replying, please edit your Subject line so it is more specific >> than "Re: Contents of users-list digest..." >> >> >> Today's Topics: >> >> 1. MonetDB-PHP Error on parameterized query with timestamp >> (Kevork Vartanian) >> 2. Re: MonetDB-PHP Error on parameterized query with timestamp >> (Sjoerd Mullender) >> >> >> ---------------------------------------------------------------------- >> >> Message: 1 >> Date: Fri, 4 Dec 2020 00:11:59 +0000 >> From: "Kevork Vartanian" <kev(a)innotta.com.au <mailto:kev@innotta.com.au>> >> To: "users-list(a)monetdb.org <mailto:users-list@monetdb.org>" <users-list(a)monetdb.org <mailto:users-list@monetdb.org>> >> Subject: MonetDB-PHP Error on parameterized query with timestamp >> Message-ID: >> <SYBP282MB0346DC1924EC1C610E29428B81F10(a)SYBP282MB0346.AUSP282.PROD.OUTLOOK.COM <mailto:SYBP282MB0346DC1924EC1C610E29428B81F10@SYBP282MB0346.AUSP282.PROD.OUTLOOK.COM>> >> >> Content-Type: text/plain; charset="iso-8859-1" >> >> Hi, >> >> The below is from my colleague who is not a member on this list, so I'm sending on his behalf. >> >> I'm using MonetDB with MonetDB-PHP library. >> >> >> I have followed the documentation from: https://github.com/MonetDB/MonetDB-PHP <https://github.com/MonetDB/MonetDB-PHP> >> >> >> Everything is working fine, but if I set parameter for timestamp type column I get the following error: >> >> Error from MonetDB: 42000!Wrong type for argument 1 of function call: char, expected timestamp >> >> For example, this is working: >> >> $result = $connection->Query(' >> select >> * >> from >> "cats" >> where >> "name" = ? >> and "weight_kg" > ? >> limit >> 10', [ "D'artagnan", 5.3 ]); >> >> but this will not work: >> >> $result = $connection->Query(' >> select >> * >> from >> "cats" >> where >> "name" = ? >> and "weight_kg" > ? >> and "birthdate" < ? // timestamp data type >> limit >> 10 >> ', [ "D'artagnan", 5.3, "2020-02-28 12:37:16" ]); >> >> >> The error occurs for any column that is of timestamp type and only when passing value as parameter. >> >> >> What am I doing wrong? >> >> Thank you. >> >> >> Regards, >> >> Kevork Vartanian >> >> This email correspondence may contain privileged information and it is intended to be transmitted to the addressee abovementioned. If you are not the intended recipient of this email correspondence, you must not distribute, copy, forward or rely upon its contents. We ask that you notify the sender of this error and immediately delete this email correspondence. >>

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Re: MonetDB-PHP Error on parameterized query with timestamp
by Kevork Vartanian 09 Dec '20

09 Dec '20

Hi Sjoerd, Thank you for getting back to me. My colleague tested what you suggested and got the same error so it is still failing. He is certain he is passing the correct value as he is able to execute the same query in raw format, so he believed it has to do with the way params are implemented. I'm no expert but he said it looks like an error from C language. Please advise. Thank you. Regards, Kevork Vartanian ________________________________ From: users-list <users-list-bounces+kev=innotta.com.au(a)monetdb.org> on behalf of users-list-request(a)monetdb.org <users-list-request(a)monetdb.org> Sent: Friday, 4 December 2020 10:00 PM To: users-list(a)monetdb.org <users-list(a)monetdb.org> Subject: users-list Digest, Vol 100, Issue 2 Send users-list mailing list submissions to users-list(a)monetdb.org To subscribe or unsubscribe via the World Wide Web, visit https://www.monetdb.org/mailman/listinfo/users-list or, via email, send a message with subject or body 'help' to users-list-request(a)monetdb.org You can reach the person managing the list at users-list-owner(a)monetdb.org When replying, please edit your Subject line so it is more specific than "Re: Contents of users-list digest..." Today's Topics: 1. MonetDB-PHP Error on parameterized query with timestamp (Kevork Vartanian) 2. Re: MonetDB-PHP Error on parameterized query with timestamp (Sjoerd Mullender) ---------------------------------------------------------------------- Message: 1 Date: Fri, 4 Dec 2020 00:11:59 +0000 From: "Kevork Vartanian" <kev(a)innotta.com.au> To: "users-list(a)monetdb.org" <users-list(a)monetdb.org> Subject: MonetDB-PHP Error on parameterized query with timestamp Message-ID: <SYBP282MB0346DC1924EC1C610E29428B81F10(a)SYBP282MB0346.AUSP282.PROD.OUTLOOK.COM> Content-Type: text/plain; charset="iso-8859-1" Hi, The below is from my colleague who is not a member on this list, so I'm sending on his behalf. I'm using MonetDB with MonetDB-PHP library. I have followed the documentation from: https://github.com/MonetDB/MonetDB-PHP Everything is working fine, but if I set parameter for timestamp type column I get the following error: Error from MonetDB: 42000!Wrong type for argument 1 of function call: char, expected timestamp For example, this is working: $result = $connection->Query(' select * from "cats" where "name" = ? and "weight_kg" > ? limit 10', [ "D'artagnan", 5.3 ]); but this will not work: $result = $connection->Query(' select * from "cats" where "name" = ? and "weight_kg" > ? and "birthdate" < ? // timestamp data type limit 10 ', [ "D'artagnan", 5.3, "2020-02-28 12:37:16" ]); The error occurs for any column that is of timestamp type and only when passing value as parameter. What am I doing wrong? Thank you. Regards, Kevork Vartanian This email correspondence may contain privileged information and it is intended to be transmitted to the addressee abovementioned. If you are not the intended recipient of this email correspondence, you must not distribute, copy, forward or rely upon its contents. We ask that you notify the sender of this error and immediately delete this email correspondence.

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MonetDB-PHP Error on parameterized query with timestamp
by Kevork Vartanian 04 Dec '20

04 Dec '20

Hi, The below is from my colleague who is not a member on this list, so I'm sending on his behalf. I'm using MonetDB with MonetDB-PHP library. I have followed the documentation from: https://github.com/MonetDB/MonetDB-PHP Everything is working fine, but if I set parameter for timestamp type column I get the following error: Error from MonetDB: 42000!Wrong type for argument 1 of function call: char, expected timestamp For example, this is working: $result = $connection->Query(' select * from "cats" where "name" = ? and "weight_kg" > ? limit 10', [ "D'artagnan", 5.3 ]); but this will not work: $result = $connection->Query(' select * from "cats" where "name" = ? and "weight_kg" > ? and "birthdate" < ? // timestamp data type limit 10 ', [ "D'artagnan", 5.3, "2020-02-28 12:37:16" ]); The error occurs for any column that is of timestamp type and only when passing value as parameter. What am I doing wrong? Thank you. Regards, Kevork Vartanian This email correspondence may contain privileged information and it is intended to be transmitted to the addressee abovementioned. If you are not the intended recipient of this email correspondence, you must not distribute, copy, forward or rely upon its contents. We ask that you notify the sender of this error and immediately delete this email correspondence.

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MonetDB bug tracker has moved to github
by Sjoerd Mullender 01 Dec '20

01 Dec '20

The MonetDB bug tracker has been moved from our self-hosted bugzilla instance to github issues. All bug IDs have remained the same in the transition, making referencing bugs easier. The new bug tracker can be found at https://github.com/MonetDB/MonetDB/issues Don't forget to follow this tracker (if you're interested in doing that) or follow individual bugs. Due to the way we had to do the move, the old stars that you may have given to the MonetDB github repo have been lost, so please, star it again (or for the first time) if you feel so inclined. The old bugzilla tracker will remain on-line for the time being but entry of new bugs has been turned off. Shortcuts to bugs are forwarded to github. (Shortcuts are URLs in the form of https://www.monetdb.org/bugzilla/<bugid> and https://bugs.monetdb.org/<bugid>.) -- Sjoerd Mullender

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