Обсуждение: Proposal: First step towards Intelligent,integrated database
<font face="Arial"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><font face="Calibri">Hello,</font><p class="MsoNormal"style="MARGIN: 0cm 0cm 0pt"><font face="Calibri"></font> <p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><fontface="Calibri">Here is the proposal: <span style="mso-spacerun: yes"> </span>My 1<sup>st</sup> step towards Intelligent,Integrated database. I am explaining the proposal with the use of example. </font><p class="MsoNormal" style="MARGIN:0cm 0cm 0pt"><font face="Calibri">Example: We will have a master table say CustMast and a transaction tablesay salesOrder table.</font><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><font face="Calibri">View of CustMast:</font><pclass="MsoNormal" style="MARGIN: 0cm 0cm 0pt 36pt"><font face="Calibri">CustCode<span style="mso-spacerun:yes"> </span>Number(5),</font><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 36pt"><font face="Calibri">CustName<spanstyle="mso-spacerun: yes"> </span>Varchar(30),</font><p class="MsoNormal" style="MARGIN: 0cm0cm 0pt 36pt"><font face="Calibri">CustAdrsLine1<span style="mso-spacerun: yes"> </span>Varchar,</font><p class="MsoNormal"style="MARGIN: 0cm 0cm 0pt 36pt"><font face="Calibri">CustAdrsLine2<span style="mso-spacerun: yes"> </span>varchar<spanstyle="mso-spacerun: yes"> </span>etc.</font><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><font face="Calibri">Viewof SalesOrder:</font><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt 36pt"><font face="Calibri">Sordno<spanstyle="mso-spacerun: yes"> </span>Number(8),</font><p class="MsoNormal" style="MARGIN: 0cm 0cm0pt 36pt"><font face="Calibri">Sorddt<span style="mso-spacerun: yes"> </span>date,</font><p class="MsoNormal" style="MARGIN:0cm 0cm 0pt 36pt"><font face="Calibri">CustCode<span style="mso-spacerun: yes"> </span>Number(5)<span style="mso-spacerun:yes"> </span>-<span style="mso-spacerun: yes"> </span>present way of defining.</font><p class="MsoNormal"style="MARGIN: 0cm 0cm 0pt"><font face="Calibri"><span style="mso-spacerun: yes"> </span>Proposed way is:</font><pclass="MsoNormal" style="TEXT-INDENT: 36pt; MARGIN: 0cm 0cm 0pt"><b><font face="Calibri">CustCode Object CustMast.<spanstyle="mso-spacerun: yes"> </span>--- New data type to be introduced called “O” Object and create tabledefinition to be modified whenever data type is ‘O’, it will accept object name (in this case table name). Here I wantto inform data definition that field and its data type is already defined in master table and use the same data typehere and both tables are linked with this field.</font></b><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><b><fontface="Calibri">We will be using same field name in both tables if not along with table name field name is tobe accepted in create table definition.</font></b><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt"><font face="Calibri">Advantages:</font><p class="MsoListParagraphCxSpFirst" style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt;mso-add-space: auto; mso-list: l0 level1 lfo1"><span style="mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin"><spanstyle="mso-list: Ignore"><font face="Calibri">1.</font><span style="FONT: 7pt 'Times New Roman'"> </span></span></span><font face="Calibri">Now database knows that custcode in salesorder is a foreign key,a table constraint can be created. It also knows that index to be created on this field.</font><p class="MsoListParagraphCxSpMiddle"style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto; mso-list: l0level1 lfo1"><span style="mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin"><span style="mso-list: Ignore"><fontface="Calibri">2.</font><span style="FONT: 7pt 'Times New Roman'"> </span></span></span><font face="Calibri">Inpresent situation select statement for selecting values from join of both tables will be</font><p class="MsoListParagraphCxSpMiddle"style="MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto"><font face="Calibri">Select sordno,sorddt, custcode, custname, custadrsline1 </font><p class="MsoListParagraphCxSpMiddle" style="MARGIN: 0cm 0cm 0pt36pt; mso-add-space: auto"><font face="Calibri">from salesorder, custmast </font><p class="MsoListParagraphCxSpMiddle"style="MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto"><font face="Calibri">where salesorder.custcode=custmast.custcode.</font><pclass="MsoListParagraphCxSpMiddle" style="TEXT-INDENT: -18pt; MARGIN: 0cm0cm 0pt 36pt; mso-add-space: auto; mso-list: l0 level1 lfo1"><span style="mso-bidi-font-family: Calibri; mso-bidi-theme-font:minor-latin"><span style="mso-list: Ignore"><font face="Calibri">3.</font><span style="FONT: 7pt 'TimesNew Roman'"> </span></span></span><font face="Calibri">In proposed way we can write this statement as:</font><pclass="MsoListParagraphCxSpMiddle" style="MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto"><font face="Calibri">Selectsordno, sorddt, custcode, custname, custadrsline1 </font><p class="MsoListParagraphCxSpMiddle" style="MARGIN:0cm 0cm 0pt 36pt; mso-add-space: auto"><font face="Calibri">from salesorder<span style="mso-spacerun: yes"> </span>(with proper changes in program which pickup values from select statement.</font><p class="MsoListParagraphCxSpMiddle"style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto; mso-list: l0level1 lfo1"><span style="mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin"><span style="mso-list: Ignore"><fontface="Calibri">4.</font><span style="FONT: 7pt 'Times New Roman'"> </span></span></span><font face="Calibri">Fieldcan be from another table in same database or from Excel sheet column.</font><p class="MsoListParagraphCxSpMiddle"style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto; mso-list: l0level1 lfo1"><span style="mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin"><span style="mso-list: Ignore"><fontface="Calibri">5.</font><span style="FONT: 7pt 'Times New Roman'"> </span></span></span><font face="Calibri">Viewsneed not be created as all tables are properly linked with each other in an application. </font><p class="MsoListParagraphCxSpMiddle"style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto; mso-list: l0level1 lfo1"><span style="mso-bidi-font-family: Calibri; mso-bidi-theme-font: minor-latin"><span style="mso-list: Ignore"><fontface="Calibri">6.</font><span style="FONT: 7pt 'Times New Roman'"> </span></span></span><font face="Calibri"><strong>Thisis only first step and many advantages can be a result of brainstorm.</strong> </font><p class="MsoListParagraphCxSpMiddle"style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto; mso-list: l0level1 lfo1"><font face="Calibri">7. This will change RDBMS, Tools and ERP to next generation.</font><p class="MsoListParagraphCxSpMiddle"style="TEXT-INDENT: -18pt; MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto; mso-list: l0level1 lfo1"><font face="Calibri"></font> <p class="MsoListParagraphCxSpMiddle" style="TEXT-INDENT: -18pt; MARGIN: 0cm0cm 0pt 36pt; mso-add-space: auto; mso-list: l0 level1 lfo1"><font face="Calibri">For any clarifications pl contact. Plgive your feedback.</font><p class="MsoListParagraphCxSpLast" style="MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto"><spanstyle="mso-spacerun: yes"></span> <p class="MsoListParagraphCxSpLast" style="MARGIN: 0cm 0cm 0pt 36pt; mso-add-space:auto"><span style="mso-spacerun: yes">Regards Many,</span><p class="MsoListParagraphCxSpLast" style="MARGIN:0cm 0cm 0pt 36pt; mso-add-space: auto"><span style="mso-spacerun: yes">Vijay Ghatpande.</span><p class="MsoListParagraphCxSpLast"style="MARGIN: 0cm 0cm 0pt 36pt; mso-add-space: auto"><span style="mso-spacerun: yes">Cell:+91 9822456142.</span></font>
I am probably just being thick, but how is your idea different from create domain:
http://www.postgresql.org/docs/current/static/sql-createdomain.html
From: pgsql-hackers-owner@postgresql.org [mailto:pgsql-hackers-owner@postgresql.org] On Behalf Of ghatpande@vsnl.net
Sent: Wednesday, December 01, 2010 2:20 AM
To: pgsql hackers
Subject: [HACKERS] Proposal: First step towards Intelligent,integrated database
Importance: High
Hello,
Here is the proposal: My 1st step towards Intelligent, Integrated database. I am explaining the proposal with the use of example.
Example: We will have a master table say CustMast and a transaction table say salesOrder table.
View of CustMast:
CustCode Number(5),
CustName Varchar(30),
CustAdrsLine1 Varchar,
CustAdrsLine2 varchar etc.
View of SalesOrder:
Sordno Number(8),
Sorddt date,
CustCode Number(5) - present way of defining.
Proposed way is:
CustCode Object CustMast. --- New data type to be introduced called “O” Object and create table definition to be modified whenever data type is ‘O’, it will accept object name (in this case table name). Here I want to inform data definition that field and its data type is already defined in master table and use the same data type here and both tables are linked with this field.
We will be using same field name in both tables if not along with table name field name is to be accepted in create table definition.
Advantages:
1. Now database knows that custcode in salesorder is a foreign key, a table constraint can be created. It also knows that index to be created on this field.
2. In present situation select statement for selecting values from join of both tables will be
Select sordno, sorddt, custcode, custname, custadrsline1
from salesorder, custmast
where salesorder.custcode=custmast.custcode.
3. In proposed way we can write this statement as:
Select sordno, sorddt, custcode, custname, custadrsline1
from salesorder (with proper changes in program which pickup values from select statement.
4. Field can be from another table in same database or from Excel sheet column.
5. Views need not be created as all tables are properly linked with each other in an application.
6. This is only first step and many advantages can be a result of brainstorm.
7. This will change RDBMS, Tools and ERP to next generation.
For any clarifications pl contact. Pl give your feedback.
Regards Many,
Vijay Ghatpande.
Cell: +91 9822456142.
Create domain is only useful for abstracting common constraints on fields into single location for maintenance. It may notbe useful to link tables. ----- Original Message ----- From: Dann Corbit <DCorbit@connx.com> Date: Wednesday, December 1, 2010 4:04 pm Subject: RE: [HACKERS] Proposal: First step towards Intelligent,integrateddatabase To: "'ghatpande@vsnl.net'" <ghatpande@vsnl.net>, pgsql hackers <pgsql-hackers@postgresql.org> > I am probably just being thick, but how is your idea different > from create domain: > http://www.postgresql.org/docs/current/static/sql-createdomain.html > > > From: pgsql-hackers-owner@postgresql.org [mailto:pgsql-hackers- > owner@postgresql.org] On Behalf Of ghatpande@vsnl.net > Sent: Wednesday, December 01, 2010 2:20 AM > To: pgsql hackers > Subject: [HACKERS] Proposal: First step towards > Intelligent,integrated database > Importance: High > > Hello, > > Here is the proposal: My 1st step towards Intelligent, Integrated > database. I am explaining the proposal with the use of example. > Example: We will have a master table say CustMast and a > transaction table say salesOrder table. > View of CustMast: > CustCode Number(5), > CustName Varchar(30), > CustAdrsLine1 Varchar, > CustAdrsLine2 varchar etc. > View of SalesOrder: > Sordno Number(8), > Sorddt date, > CustCode Number(5) - present way of defining. > Proposed way is: > CustCode Object CustMast. --- New data type to be introduced > called "O" Object and create table definition to be modified > whenever data type is 'O', it will accept object name (in this > case table name). Here I want to inform data definition that field > and its data type is already defined in master table and use the > same data type here and both tables are linked with this field. > We will be using same field name in both tables if not along with > table name field name is to be accepted in create table definition. > Advantages: > > 1. Now database knows that custcode in salesorder is a > foreign key, a table constraint can be created. It also knows that > index to be created on this field. > > 2. In present situation select statement for selecting > values from join of both tables will be > > Select sordno, sorddt, custcode, custname, custadrsline1 > > from salesorder, custmast > > where salesorder.custcode=custmast.custcode. > > 3. In proposed way we can write this statement as: > > Select sordno, sorddt, custcode, custname, custadrsline1 > > from salesorder (with proper changes in program which pickup > values from select statement. > > 4. Field can be from another table in same database or from > Excel sheet column. > > 5. Views need not be created as all tables are properly > linked with each other in an application. > > 6. This is only first step and many advantages can be a > result of brainstorm. > > 7. This will change RDBMS, Tools and ERP to next generation. > > > > For any clarifications pl contact. Pl give your feedback. > > > > Regards Many, > > Vijay Ghatpande. > > Cell: +91 9822456142. >
Hello there was a very similar design in ANSI SQL 99. I have documentation only in Czech, but probably you can find a sources about OOP part in ANSI/SQL. CREATE TABLE children( id int primary key, parent ref(parents) name .. ... and you can write queries like SELECT name, parent->name FROM children Regards Pavel Stehule see a object support in ANSI/SQL - keywords ref, scope, 2010/12/1 <ghatpande@vsnl.net>: > Hello, > > > > Here is the proposal: My 1st step towards Intelligent, Integrated database. > I am explaining the proposal with the use of example. > > Example: We will have a master table say CustMast and a transaction table > say salesOrder table. > > View of CustMast: > > CustCode Number(5), > > CustName Varchar(30), > > CustAdrsLine1 Varchar, > > CustAdrsLine2 varchar etc. > > View of SalesOrder: > > Sordno Number(8), > > Sorddt date, > > CustCode Number(5) - present way of defining. > > Proposed way is: > > CustCode Object CustMast. --- New data type to be introduced called “O” > Object and create table definition to be modified whenever data type is ‘O’, > it will accept object name (in this case table name). Here I want to inform > data definition that field and its data type is already defined in master > table and use the same data type here and both tables are linked with this > field. > > We will be using same field name in both tables if not along with table name > field name is to be accepted in create table definition. > > Advantages: > > 1. Now database knows that custcode in salesorder is a foreign key, a > table constraint can be created. It also knows that index to be created on > this field. > > 2. In present situation select statement for selecting values from > join of both tables will be > > Select sordno, sorddt, custcode, custname, custadrsline1 > > from salesorder, custmast > > where salesorder.custcode=custmast.custcode. > > 3. In proposed way we can write this statement as: > > Select sordno, sorddt, custcode, custname, custadrsline1 > > from salesorder (with proper changes in program which pickup values from > select statement. > > 4. Field can be from another table in same database or from Excel > sheet column. > > 5. Views need not be created as all tables are properly linked with > each other in an application. > > 6. This is only first step and many advantages can be a result of > brainstorm. > > 7. This will change RDBMS, Tools and ERP to next generation. > > > > For any clarifications pl contact. Pl give your feedback. > > > > Regards Many, > > Vijay Ghatpande. > > Cell: +91 9822456142.
ghatpande@vsnl.net writes:
> Create domain is only useful for abstracting common constraints on fields into single location for maintenance. It
maynot be useful to link tables.
It's still unclear what this does that you don't get from inheritance,
typed tables, use of a table's rowtype as a field type, or CREATE TABLE
LIKE. This isn't exactly virgin territory.
regards, tom lane
On 12/01/2010 09:41 AM, Tom Lane wrote: > ghatpande@vsnl.net writes: >> Create domain is only useful for abstracting common constraints on fields into single location for maintenance. It maynot be useful to link tables. > It's still unclear what this does that you don't get from inheritance, > typed tables, use of a table's rowtype as a field type, or CREATE TABLE > LIKE. This isn't exactly virgin territory. > > Yeah. Actually, the whole thing reminded me somewhat of the pre-RDBMS data stores I worked with 25 years or so ago. "Those who cannot remember history are doomed to repeat it." cheers andrew
On Wed, Dec 01, 2010 at 03:19:32PM +0500, ghatpande@vsnl.net wrote: > Hello, > > Here is the proposal: My 1st step towards Intelligent, Integrated database. You're implying that databases are stupid and incoherent. This is *not* a great way to start. Cheers, David. -- David Fetter <david@fetter.org> http://fetter.org/ Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter Skype: davidfetter XMPP: david.fetter@gmail.com iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics Remember to vote! Consider donating to Postgres: http://www.postgresql.org/about/donate
Be positive ... Negative thoughts are not good... ----- Original Message ----- From: David Fetter <david@fetter.org> Date: Wednesday, December 1, 2010 8:42 pm Subject: Re: [HACKERS] Proposal: First step towards Intelligent,integrateddatabase To: ghatpande@vsnl.net Cc: pgsql hackers <pgsql-hackers@postgresql.org> > On Wed, Dec 01, 2010 at 03:19:32PM +0500, ghatpande@vsnl.net wrote: > > Hello, > > > > Here is the proposal: My 1st step towards Intelligent, > Integrated database. > > You're implying that databases are stupid and incoherent. This is > *not* a great way to start. > > Cheers, > David. > -- > David Fetter <david@fetter.org> http://fetter.org/ > Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter > Skype: davidfetter XMPP: david.fetter@gmail.com > iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics > > Remember to vote! > Consider donating to Postgres: http://www.postgresql.org/about/donate > > -- > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-hackers >
My point exactly. You started off with high negativity, and you should not expect good results from same. Cheers, David. On Wed, Dec 01, 2010 at 08:15:25PM +0500, ghatpande@vsnl.net wrote: > Be positive ... Negative thoughts are not good... > > ----- Original Message ----- > From: David Fetter <david@fetter.org> > Date: Wednesday, December 1, 2010 8:42 pm > Subject: Re: [HACKERS] Proposal: First step towards Intelligent,integrateddatabase > To: ghatpande@vsnl.net > Cc: pgsql hackers <pgsql-hackers@postgresql.org> > > > On Wed, Dec 01, 2010 at 03:19:32PM +0500, ghatpande@vsnl.net wrote: > > > Hello, > > > > > > Here is the proposal: My 1st step towards Intelligent, > > Integrated database. > > > > You're implying that databases are stupid and incoherent. This is > > *not* a great way to start. > > > > Cheers, > > David. > > -- > > David Fetter <david@fetter.org> http://fetter.org/ > > Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter > > Skype: davidfetter XMPP: david.fetter@gmail.com > > iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics > > > > Remember to vote! > > Consider donating to Postgres: http://www.postgresql.org/about/donate > > > > -- > > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > > To make changes to your subscription: > > http://www.postgresql.org/mailpref/pgsql-hackers > > > > -- > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-hackers -- David Fetter <david@fetter.org> http://fetter.org/ Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter Skype: davidfetter XMPP: david.fetter@gmail.com iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics Remember to vote! Consider donating to Postgres: http://www.postgresql.org/about/donate
On Dec 1, 2010, at 8:59 AM, Andrew Dunstan wrote: > On 12/01/2010 09:41 AM, Tom Lane wrote: >> ghatpande@vsnl.net writes: >>> Create domain is only useful for abstracting common constraints on fields into single location for maintenance. It maynot be useful to link tables. >> It's still unclear what this does that you don't get from inheritance, >> typed tables, use of a table's rowtype as a field type, or CREATE TABLE >> LIKE. This isn't exactly virgin territory. >> >> > > Yeah. Actually, the whole thing reminded me somewhat of the pre-RDBMS data stores I worked with 25 years or so ago. "Thosewho cannot remember history are doomed to repeat it." Something that did what Pavel mentioned: SELECT name, parent->name FROM children; would be very useful. It means you no longer have to write explicit joins (or perhaps more accurately, you no longer haveto specify exactly how to join the two tables). -- Jim C. Nasby, Database Architect jim@nasby.net 512.569.9461 (cell) http://jim.nasby.net
No negativity. This world is beautiful, I want to make it more beautiful. Together we can make it, I am sure. Cheers, Vijay. Experience the excellence ----- Original Message ----- From: David Fetter <david@fetter.org> Date: Wednesday, December 1, 2010 9:30 pm Subject: Re: [HACKERS] Proposal: First step towards Intelligent,integrateddatabase To: ghatpande@vsnl.net Cc: pgsql hackers <pgsql-hackers@postgresql.org> > My point exactly. You started off with high negativity, and you > should not expect good results from same. > > Cheers, > David. > On Wed, Dec 01, 2010 at 08:15:25PM +0500, ghatpande@vsnl.net wrote: > > Be positive ... Negative thoughts are not good... > > > > ----- Original Message ----- > > From: David Fetter <david@fetter.org> > > Date: Wednesday, December 1, 2010 8:42 pm > > Subject: Re: [HACKERS] Proposal: First step towards > Intelligent,integrateddatabase> To: ghatpande@vsnl.net > > Cc: pgsql hackers <pgsql-hackers@postgresql.org> > > > > > On Wed, Dec 01, 2010 at 03:19:32PM +0500, ghatpande@vsnl.net > wrote:> > > Hello, > > > > > > > > Here is the proposal: My 1st step towards Intelligent, > > > Integrated database. > > > > > > You're implying that databases are stupid and incoherent. > This is > > > *not* a great way to start. > > > > > > Cheers, > > > David. > > > -- > > > David Fetter <david@fetter.org> http://fetter.org/ > > > Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter > > > Skype: davidfetter XMPP: david.fetter@gmail.com > > > iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics > > > > > > Remember to vote! > > > Consider donating to Postgres: > http://www.postgresql.org/about/donate> > > > > -- > > > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > > > To make changes to your subscription: > > > http://www.postgresql.org/mailpref/pgsql-hackers > > > > > > > -- > > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > > To make changes to your subscription: > > http://www.postgresql.org/mailpref/pgsql-hackers > > -- > David Fetter <david@fetter.org> http://fetter.org/ > Phone: +1 415 235 3778 AIM: dfetter666 Yahoo!: dfetter > Skype: davidfetter XMPP: david.fetter@gmail.com > iCal: webcal://www.tripit.com/feed/ical/people/david74/tripit.ics > > Remember to vote! > Consider donating to Postgres: http://www.postgresql.org/about/donate > > -- > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-hackers >
> Something that did what Pavel mentioned: > > SELECT name, parent->name FROM children; > > would be very useful. It means you no longer have to write explicit joins (or perhaps more accurately, you no longer haveto specify exactly how to join the two tables). Already exists: http://htsql.org/ -- -- Josh Berkus PostgreSQL Experts Inc. http://www.pgexperts.com
The aim of HTSQL is only to avoid joins. Need to setup HTSQL server. On startup introspects table relationships. Relationships are edges in a graph model. Processortranslates graph requests into SQL. Some limitations: No custom commands, primitive formatters. Query results are not streaming. No way to override catalog configuration. My proposal has no limitations. Its primary aim is to make database intelligent. Avoiding joins is one of the aim and notthe only aim. I am sure that the ultimate output of my proposal is NEXT GENERATION DATABASE. It will change database andERP world. regards, Vijay. Experience the excellence.... ----- Original Message ----- From: Josh Berkus <josh@agliodbs.com> Date: Thursday, December 2, 2010 8:08 am Subject: Re: [HACKERS] Proposal: First step towards Intelligent,integrateddatabase To: Jim Nasby <jim@nasby.net> Cc: Andrew Dunstan <andrew@dunslane.net>, Tom Lane <tgl@sss.pgh.pa.us>, ghatpande@vsnl.net, Dann Corbit <DCorbit@connx.com>,pgsql hackers <pgsql-hackers@postgresql.org> > > > Something that did what Pavel mentioned: > > > > SELECT name, parent->name FROM children; > > > > would be very useful. It means you no longer have to write > explicit joins (or perhaps more accurately, you no longer have to > specify exactly how to join the two tables). > > Already exists: > http://htsql.org/ > > > -- > -- Josh Berkus > PostgreSQL Experts Inc. > http://www.pgexperts.com > > -- > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-hackers >
If possible can you provide glimpses of History. Corrected History will always help for future. Success rate also increasesif we could avoid mistakes we made in history. regards, Vijay. Experience the Excellence...... ----- Original Message ----- From: Andrew Dunstan <andrew@dunslane.net> Date: Wednesday, December 1, 2010 8:32 pm Subject: Re: [HACKERS] Proposal: First step towards Intelligent,integrateddatabase To: Tom Lane <tgl@sss.pgh.pa.us> Cc: ghatpande@vsnl.net, Dann Corbit <DCorbit@connx.com>, pgsql hackers <pgsql-hackers@postgresql.org> > > > On 12/01/2010 09:41 AM, Tom Lane wrote: > > ghatpande@vsnl.net writes: > >> Create domain is only useful for abstracting common constraints > on fields into single location for maintenance. It may not be > useful to link tables. > > It's still unclear what this does that you don't get from > inheritance,> typed tables, use of a table's rowtype as a field > type, or CREATE TABLE > > LIKE. This isn't exactly virgin territory. > > > > > > Yeah. Actually, the whole thing reminded me somewhat of the pre- > RDBMS > data stores I worked with 25 years or so ago. "Those who cannot > remember > history are doomed to repeat it." > > cheers > > andrew > > -- > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-hackers >
I know world's population. Non of the person thinks alike and still many peoples goal can be the same. Nothing is virginin this world. If someone thinks like that then it is a mistake. My aim is to prove that Postgresql can be the greatleader if we put natural intelligence in database which is missing all over. Regards, Vijay. Experience the Excellence...... ----- Original Message ----- From: Tom Lane <tgl@sss.pgh.pa.us> Date: Wednesday, December 1, 2010 8:20 pm Subject: Re: [HACKERS] Proposal: First step towards Intelligent,integrateddatabase To: ghatpande@vsnl.net Cc: Dann Corbit <DCorbit@connx.com>, pgsql hackers <pgsql-hackers@postgresql.org> > ghatpande@vsnl.net writes: > > Create domain is only useful for abstracting common constraints > on fields into single location for maintenance. It may not be > useful to link tables. > > It's still unclear what this does that you don't get from inheritance, > typed tables, use of a table's rowtype as a field type, or CREATE > TABLELIKE. This isn't exactly virgin territory. > > regards, tom lane > > -- > Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-hackers >
I know world's population. Non of the person thinks alike and still many peoples goal can be the same. Nothing is virgin in this world. If someone thinks like that then it is a mistake. My aim is to prove that Postgresql can be the great leader if we put natural intelligence in database which is missing all over. And what is that intelligence?
<ghatpande@vsnl.net> wrote: > If possible can you provide glimpses of History. http://en.wikipedia.org/wiki/Navigational_database http://en.wikipedia.org/wiki/MARK_IV_%28software%29 I don't want to go back there, myself. YMMV. -Kevin
On 12/02/2010 12:44 PM, Kevin Grittner wrote: > <ghatpande@vsnl.net> wrote: > >> If possible can you provide glimpses of History. > > http://en.wikipedia.org/wiki/Navigational_database > > http://en.wikipedia.org/wiki/MARK_IV_%28software%29 > > I don't want to go back there, myself. YMMV. > > Me either. BTDTGTTS. :-) cheers andrew