[sqlalchemy] Result of a table.update()
Hi All I'm using 0.6.4 under Windoze with MySQL, Python 2.6.4 and I had code that I thought worked before (0.6.3) - which appeared to break due to this issue.. I could be wrong on this point so I'll just get to the crux of the matter... I have a result = table.update(whereClause, values=someValuesDict).execute() The table is updated correctly, however, the resultproxy object I receive as 'result' appears to have no members. If I fetchone() or fetchall() I simply get a None result. Is this correct? If this IS correct, how is the best way to tell if the update was a success? I tried putting bad data in the whereClause and it simply did nothing to the database, but my resultproxy was the same. No Exceptions raised in either case? Please enlighten me.. Cheers Warwick Warwick Prince Managing Director mobile: +61 411 026 992 skype: warwickprince phone: +61 7 3102 3730 fax: +61 7 3319 6734 web: www.mushroomsys.com -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalch...@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] Result of a table.update()
an UPDATE statement returns no rows unless RETURNING was used to return columns from those rows that were updated. When an UPDATE or DELETE is emitted, result.rowcount contains the number of rows that were matched by the statement's criterion. On Oct 21, 2010, at 2:06 AM, Warwick Prince wrote: Hi All I'm using 0.6.4 under Windoze with MySQL, Python 2.6.4 and I had code that I thought worked before (0.6.3) - which appeared to break due to this issue.. I could be wrong on this point so I'll just get to the crux of the matter... I have a result = table.update(whereClause, values=someValuesDict).execute() The table is updated correctly, however, the resultproxy object I receive as 'result' appears to have no members. If I fetchone() or fetchall() I simply get a None result. Is this correct? If this IS correct, how is the best way to tell if the update was a success? I tried putting bad data in the whereClause and it simply did nothing to the database, but my resultproxy was the same. No Exceptions raised in either case? Please enlighten me.. Cheers Warwick Warwick Prince Managing Director mobile: +61 411 026 992 skype: warwickprince phone: +61 7 3102 3730 fax: +61 7 3319 6734 web: www.mushroomsys.com -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalch...@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 sqlalch...@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] Result of a table.update()
HI Michael Thanks for the info. .rowcount was the missing link I needed. I'll also play with RETURNING as well as I thought I had tried that at one stage and saw no change in the SQL emitted, so moved on. I'll let you know. Cheers Warwick an UPDATE statement returns no rows unless RETURNING was used to return columns from those rows that were updated. When an UPDATE or DELETE is emitted, result.rowcount contains the number of rows that were matched by the statement's criterion. On Oct 21, 2010, at 2:06 AM, Warwick Prince wrote: Hi All I'm using 0.6.4 under Windoze with MySQL, Python 2.6.4 and I had code that I thought worked before (0.6.3) - which appeared to break due to this issue.. I could be wrong on this point so I'll just get to the crux of the matter... I have a result = table.update(whereClause, values=someValuesDict).execute() The table is updated correctly, however, the resultproxy object I receive as 'result' appears to have no members. If I fetchone() or fetchall() I simply get a None result. Is this correct? If this IS correct, how is the best way to tell if the update was a success? I tried putting bad data in the whereClause and it simply did nothing to the database, but my resultproxy was the same. No Exceptions raised in either case? Please enlighten me.. Cheers Warwick Warwick Prince Managing Director mobile: +61 411 026 992 skype: warwickprince phone: +61 7 3102 3730 fax: +61 7 3319 6734 web: www.mushroomsys.com -- You received this message because you are subscribed to the Google Groups sqlalchemy group. To post to this group, send email to sqlalch...@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 sqlalch...@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 sqlalch...@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.
