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Posted by / 01-Mar-2020 14:00

Cannot be located for updating

*Native Error: 32 *SQL State : Thanks, Bill N Bill, Another process could have changed a value that the DB manager is using to locate the row. Value := ad Criteria Key; ad Criteria Key is defined in ADOInt. If your table don't have a primary key make sure u fill every single field with a value instead of NULL (I'm not sure whether this is a correct approach, but at least it work for me). I' using Delphi 7 with ADO components with an Access database. Is there a way to set the SQL generation to just use the key? I delete one record and when I reopen my app I find that two have been deleted instead. "Brian Bushay Team B" When you use clientside cursors and make changes or delete a record in the client ADO needs to Generate SQL to update (or delete) the Record in your database.The number one offender is the lack of a primary key in your data when you try to post it back to the DB. I have been sporadically getting a "Row cannot be located for updating" error. In this instance, I am just building a desktop application. To do this it must be able to find the record in your database that corresponds to the record you are editing.The returned message is "Row cannot be located for updating.Some values may have been changed since it was last read. It put only some default values on other not rilevant columns.The solution I was hoping to find was to inform ADO which field(s) are the key to the table. "Brian Bushay Team B" I'm using Delphi 6 Enterprise with SP2.I know this is possible, but cannot find out how this is done from D7. I have a form that has a couple of grids and databound controls.

problem 2: start the application, execute the code: if the new value happens to be different from what's already in the database, it will execute successfully once and thereafter, give an error at position "A". If you dont have a primary key, then the db manager tries to figure out which row should be updated by seeing if he can find one that looks much like the one that you just changed in the query object. I am not able to reproduce it, although it occurs most often when I am trying to delete a record. The error message you are getting indicates that ADO can't find the record to be deleted.He has to scan the whole db to find all possible candidates and if he finds too many, or none, he cant update anything. The default for ADO generating SQL is to use all the fields and values you originally queried from the database to find the in your database. Is there a way to set the SQL generation to just use the key? I delete one record and when I reopen my app I find that two have been deleted instead. "Brian Bushay Team B" Yes, I have a single column meaningless integer key for each table. I was about to resort to submitting the SQL myself, using the statement that you showed below.Without this, ADO will default to taking *all* fields as the key and stuff these in the SQL WHERE clause it constructs on the fly. The datasources are set to some TADOQuery's which have master datasources too.I am getting an EDatabase error that says 'Row cannot be located for updating'.

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Close; end; [email protected] on db SET NAMES latin1 SET character_set_results = NULL SET SQL_AUTO_IS_NULL = 0 select database() select database() SHOW GLOBAL STATUS SELECT @@tx_isolation set @@sql_select_limit=DEFAULT select * from facility SHOW KEYS FROM `facility` UPDATE `db`.`facility` SET `Facility Address1`=? UPDATE `db`.`facility` SET `Facility Address1`='mickey street22' WHERE `facilityid`='' SHOW GLOBAL STATUS [email protected] on db SET NAMES latin1 SET character_set_results = NULL SET SQL_AUTO_IS_NULL = 0 select database() select database() SELECT @@tx_isolation set @@sql_select_limit=DEFAULT select * from facility SHOW KEYS FROM `facility` UPDATE `db`.`facility` SET `Facility Address1`=? // SUCCESSFUL UPDATE `db`.`facility` SET `Facility Address1`='mickey street22' WHERE `facilityid`='' SHOW GLOBAL STATUS SHOW GLOBAL STATUS SHOW GLOBAL STATUS db select * from facility UPDATE `db`.`facility` SET `Facility Address1`=?