CoreData: constraint failed?
June 19, 2011
I got an error exactly same as this post described.
Followed the hint, sqlite3 open database,
- .tables
command will echo a table named Z_PRIMARYKEY - .schema Z_PRIMARYKEY
there is a column called Z_MAX with type INTEGER - select * from Z_PRIMARYKEY;
remember this value. - select max(Z_PK) from ZSTORE;
I got different max value, because I did some operation outside of iOS. - update Z_PRIMARYKEY set Z_MAX=…;
Problem solved. My concern is, will this kind of error happen in production enviroment?
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