This question brings me back to my college days, but since I haven\'t coded since those days (more than 20 years ago) I am a bit rusty.
I saw the solution to create an alternate temporary MySQL table with unique rows, but I didn\'t like that idea, as my tables are very large and would be a hassle to move them (and would create huge pr
Do you have any idea? Why XCode compilation give this result? ld: duplicate symbol _kJSONDeserializerErrorDomain in
I already have 80 million records inserted into a table, but need to ensure a few columns are jointly unique. However, the columns already contain non-unique data, so ALTER TABLE doesn\'t work.
Consider a column named EmployeeName t开发者_如何学Cable Employee. The goal is to delete repeated records, based on the EmployeeName field.
I have a table with primary keys that look like this: FIRSTKEY~ABC SECONDKEY~DEF FIRSTKEY~DEF I want to write a SELECT statement that strips off the segment following the tilde and returns all row
I have a table with the following fields: id (Unique) url (Unique) title company site_id Now, I needto remove rows having same title, company and site_id. One way to do it will be using the followi
I want to unique duplicate values in a dict. It looks like this: d = { \"a\":1, \"b\":2, \"c\":2, \"d\":3,
I\'m loading files into a table with php. I create a table like this: CREATE TABLE IF NOT EXISTS $table (
I have a simple class representing an object. It has 5 properties (a date, 2 decimals, an integer and a string). I have a collection class, derived from CollectionBase, which is a container class for
加载中,请稍侯......