Re: [sqlalchemy]Close database connection in SQLAlchemy
Thank you for the document . im currently using SQLSoup to connect to my database like this SqlSoup('mysql://@localhost:portnumbr/databasename') How can i achieve the same using SQLAlchemy? On Mon, Jan 23, 2012 at 4:37 AM, Jackson, Cameron cameron.jack...@thalesgroup.com.au wrote: * http://www.sqlalchemy.org/docs/orm/session.html#sqlalchemy.orm.session.Session.close * Not too sure if there is a pre-written or easy way to do caching, or if you'd have to write it yourself. -Original Message- From: sqlalchemy@googlegroups.com [mailto:sqlalchemy@googlegroups.com] On Behalf Of Sana Sent: Sunday, 22 January 2012 7:58 PM To: sqlalchemy Subject: [sqlalchemy]Close database connection in SQLAlchemy Hi All, I have a few queries regarding SQLAlchemy. I have a pre existing mysl database and I wanted to use SQLAlchemy on it so I have used SQLSoup to connect to the existing database. * How to close the connection once the query is done as apps become slow after a few hits to the database * On page load im displaying data from the database each time the page is refreshed the query hits the database to retrieve the data there by taking long time for the page to load is thr any way by which the query hit the table oly for new request and for the same request access data from the cache Thank you Sana -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. - DISCLAIMER: This e-mail transmission and any documents, files and previous e-mail messages attached to it are private and confidential. They may contain proprietary or copyright material or information that is subject to legal professional privilege. They are for the use of the intended recipient only. Any unauthorised viewing, use, disclosure, copying, alteration, storage or distribution of, or reliance on, this message is strictly prohibited. No part may be reproduced, adapted or transmitted without the written permission of the owner. If you have received this transmission in error, or are not an authorised recipient, please immediately notify the sender by return email, delete this message and all copies from your e-mail system, and destroy any printed copies. Receipt by anyone other than the intended recipient should not be deemed a waiver of any privilege or protection. Thales Australia does not warrant or represent that this e-mail or any documents, files and previous e-mail messages attached are error or virus free. - -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
Re: [sqlalchemy] SqlAlchemy dynamic query generation
Hi Robert Forkel, You got it right i am trying to have a combination of expression combined in and_. I need to add the attribute only when it is not equal to null.So i tried to check if it is not null and then from the expression and pass it to filter .But this does not work. I went through the document but unable to figure out how to do this through sql. Thank you On Thu, Dec 22, 2011 at 12:11 PM, Robert Forkel xrotw...@googlemail.comwrote: You may want to look at the tutorial [1]. In the code you pasted you are assembling a string to pass to filter. While you can do that (but then it should be proper sql not python!), what you want to do is passing a python expression like db.User.age==age, or a combination of expressions combined using and_, or_, etc. [1] http://www.sqlalchemy.org/docs/orm/tutorial.html#common-filter-operators On Thu, Dec 22, 2011 at 6:34 AM, Sana klh sana.kl...@gmail.com wrote: I am getting the following error ProgrammingError: (ProgrammingError) (1064, You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '== 1,db.User.age==23,d' at line 3) Is there any way by which i can generate dynamic query? Thank you Sana On Thu, Dec 22, 2011 at 4:40 AM, Jackson, Cameron cameron.jack...@thalesgroup.com.au wrote: You might get more help if you provide more details. What error are you getting? -Original Message- From: sqlalchemy@googlegroups.com [mailto:sqlalchemy@googlegroups.com] On Behalf Of Sana Sent: Thursday, 22 December 2011 2:50 AM To: sqlalchemy Subject: [sqlalchemy] SqlAlchemy dynamic query generation Hi All, I am trying to do query based on the user input as follows condition = 'and_(db.User.id == id' if user_name != ' ': condition += ',db.User.name == user_name' elif age != ' ': condition += ',db.User.age == age' elif place != ' ': condition += ',db.User.place == place' where = condition+')' result = db.User.filter(where).all() But Im getting error when i do this. Is there any way by which i can do this Thank you Sana -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. - DISCLAIMER: This e-mail transmission and any documents, files and previous e-mail messages attached to it are private and confidential. They may contain proprietary or copyright material or information that is subject to legal professional privilege. They are for the use of the intended recipient only. Any unauthorised viewing, use, disclosure, copying, alteration, storage or distribution of, or reliance on, this message is strictly prohibited. No part may be reproduced, adapted or transmitted without the written permission of the owner. If you have received this transmission in error, or are not an authorised recipient, please immediately notify the sender by return email, delete this message and all copies from your e-mail system, and destroy any printed copies. Receipt by anyone other than the intended recipient should not be deemed a waiver of any privilege or protection. Thales Australia does not warrant or represent that this e-mail or any documents, files and previous e-mail messages attached are error or virus free. - -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy
Re: [sqlalchemy] SqlAlchemy dynamic query generation
I tried it but i still get the same error. On Thu, Dec 22, 2011 at 2:31 PM, Robert Forkel xrotw...@googlemail.comwrote: conditions = [db.User.id==id] if user_name != ' ': conditions.append(db.User.name == user_name) elif age != ' ': conditions.append(db.User.age == age) elif place != ' ': conditions.append(db.User.place == place) result = db.User.filter(and_(*conditions)).all() might do the trick (untested). On Thu, Dec 22, 2011 at 9:53 AM, Sana klh sana.kl...@gmail.com wrote: Hi Robert Forkel, You got it right i am trying to have a combination of expression combined in and_. I need to add the attribute only when it is not equal to null.So i tried to check if it is not null and then from the expression and pass it to filter .But this does not work. I went through the document but unable to figure out how to do this through sql. Thank you On Thu, Dec 22, 2011 at 12:11 PM, Robert Forkel xrotw...@googlemail.com wrote: You may want to look at the tutorial [1]. In the code you pasted you are assembling a string to pass to filter. While you can do that (but then it should be proper sql not python!), what you want to do is passing a python expression like db.User.age==age, or a combination of expressions combined using and_, or_, etc. [1] http://www.sqlalchemy.org/docs/orm/tutorial.html#common-filter-operators On Thu, Dec 22, 2011 at 6:34 AM, Sana klh sana.kl...@gmail.com wrote: I am getting the following error ProgrammingError: (ProgrammingError) (1064, You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '== 1,db.User.age==23,d' at line 3) Is there any way by which i can generate dynamic query? Thank you Sana On Thu, Dec 22, 2011 at 4:40 AM, Jackson, Cameron cameron.jack...@thalesgroup.com.au wrote: You might get more help if you provide more details. What error are you getting? -Original Message- From: sqlalchemy@googlegroups.com [mailto: sqlalchemy@googlegroups.com] On Behalf Of Sana Sent: Thursday, 22 December 2011 2:50 AM To: sqlalchemy Subject: [sqlalchemy] SqlAlchemy dynamic query generation Hi All, I am trying to do query based on the user input as follows condition = 'and_(db.User.id == id' if user_name != ' ': condition += ',db.User.name == user_name' elif age != ' ': condition += ',db.User.age == age' elif place != ' ': condition += ',db.User.place == place' where = condition+')' result = db.User.filter(where).all() But Im getting error when i do this. Is there any way by which i can do this Thank you Sana -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. - DISCLAIMER: This e-mail transmission and any documents, files and previous e-mail messages attached to it are private and confidential. They may contain proprietary or copyright material or information that is subject to legal professional privilege. They are for the use of the intended recipient only. Any unauthorised viewing, use, disclosure, copying, alteration, storage or distribution of, or reliance on, this message is strictly prohibited. No part may be reproduced, adapted or transmitted without the written permission of the owner. If you have received this transmission in error, or are not an authorised recipient, please immediately notify the sender by return email, delete this message and all copies from your e-mail system, and destroy any printed copies. Receipt by anyone other than the intended recipient should not be deemed a waiver of any privilege or protection. Thales Australia does not warrant or represent that this e-mail or any documents, files and previous e-mail messages attached are error or virus free. - -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com
Re: [sqlalchemy] SqlAlchemy dynamic query generation
I am getting the following error ProgrammingError: (ProgrammingError) (1064, You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '== 1,db.User.age==23,d' at line 3) Is there any way by which i can generate dynamic query? Thank you Sana On Thu, Dec 22, 2011 at 4:40 AM, Jackson, Cameron cameron.jack...@thalesgroup.com.au wrote: You might get more help if you provide more details. What error are you getting? -Original Message- From: sqlalchemy@googlegroups.com [mailto:sqlalchemy@googlegroups.com] On Behalf Of Sana Sent: Thursday, 22 December 2011 2:50 AM To: sqlalchemy Subject: [sqlalchemy] SqlAlchemy dynamic query generation Hi All, I am trying to do query based on the user input as follows condition = 'and_(db.User.id == id' if user_name != ' ': condition += ',db.User.name == user_name' elif age != ' ': condition += ',db.User.age == age' elif place != ' ': condition += ',db.User.place == place' where = condition+')' result = db.User.filter(where).all() But Im getting error when i do this. Is there any way by which i can do this Thank you Sana -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. - DISCLAIMER: This e-mail transmission and any documents, files and previous e-mail messages attached to it are private and confidential. They may contain proprietary or copyright material or information that is subject to legal professional privilege. They are for the use of the intended recipient only. Any unauthorised viewing, use, disclosure, copying, alteration, storage or distribution of, or reliance on, this message is strictly prohibited. No part may be reproduced, adapted or transmitted without the written permission of the owner. If you have received this transmission in error, or are not an authorised recipient, please immediately notify the sender by return email, delete this message and all copies from your e-mail system, and destroy any printed copies. Receipt by anyone other than the intended recipient should not be deemed a waiver of any privilege or protection. Thales Australia does not warrant or represent that this e-mail or any documents, files and previous e-mail messages attached are error or virus free. - -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en. -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.