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Why is there an error code for 1062?
Error Code: 1062. Duplicate entry ‘1’ for key ‘PRIMARY’ I haven’t auto_increment data, PLEASE HELP me! The main reason why the error has been generated is because there is already an existing value of 1 for the column ID in which you define it as PRIMARY KEY ( values are unique) in the table you are inserting.
Why is MySQL error duplicate entry for Key 2?
Check out your table index. If that field got index (e.g. B+ tree index.) At that time update or insert query throws these kinds of error. Remove indexing and then try to fire same query. Error ‘Duplicate entry ‘338620-7′ for key 2’ on query.
How to fix MySQL replication error code : 1062?
How to fix MySQL replication Error Code : 1062. Due to quirks in network or synching MySQL is sometimes known to try and write a row when it is already present in the slave. So, when we see this error in a slave, we try either one of the following depending on many factors such as DB write traffic, time of day etc.
Is the primary key column in MySQL corrupt?
A primary key column’s data is all suppose to be different, so that bottom 1 I changed to 3 and the error went away. Your MySql is not corrupt, like previous answers and comments. you need to delete any previous tables that you are over-writing. if you are doing a complete restore of all tables, delete all existing tables.
Why is MySQL error 1 for duplicate entry’1′?
I had this same issue, my problem was I had a primary key column called unique_id and when you try to add two of the same value in that primary keyed column, it comes back with the error below. A primary key column’s data is all suppose to be different, so that bottom 1 I changed to 3 and the error went away.
How to add foreign keys in MySQL 1062?
Try the following: This query also adds numbers so you won’t need to depend on @rowid. Now you need to add the foreign key back to the earlier columns. For that, first make these indexes: Now add the foreign keys. Change the Reference Table/column as you need: Hope that helps.
Can a primary key be a unique index?
A PRIMARY KEY is a unique index, so if it contains duplicates, you cannot assign the column to be unique index, so you may need to create a new column altogether