How do I enforce set-like uniqueness between multiple columns?
67415
sql unique constraint on a 2 columns combination
76577
Single query approach to split and copy string values in a column
96093
How do I get the distinct/unique values in a column in Excel?
120742
MySQL variable format for a "NOT IN" list of values
150060
Determining duplicates in a datatable
58681
How do I make an exact copy of a table, but keep its number for referencing?
58
How can you have two auto-incremental columns in one table?
62998
How to match multiple copies of a value?
55151
Performance impact of updating target columns with same values ON CONFLICT
102903
Python: Uniqueness for list of lists
7554
How do I create a cross reference table/query for my data?
62921
Check constraint references another column in same table
149449
Better query to select multiple columns into a single output column?
141717
Dynamic SQL to generate column names?
68082
How do I ALTER a PostgreSQL table and make a column unique?
121322
How do you drop a default value or similar constraint in T-SQL?
43262
Storing arrays in Set and avoiding duplicates