Postgresql multi-column GIN index
34771
Inner join using an array column
31835
mysql trigger operand should contain 2 columns
146592
Is there a faster way to get UNION ALL behavior in Postgres?
86642
Sqlite primary key on multiple columns
31013
How to select records with maximum values in two columns?
125835
Can't find FULLTEXT index matching the column list (indexes is set)
156303
Performing Inner Join for Multiple Columns in the Same Table
114552
What's the anatomy of a columnstore index?
83319
Multiple Indexes vs Multi-Column Indexes
81132
MySQL pivot row into dynamic number of columns
102397
Create a trigger on all the last_modified columns in PostgreSQL
65713
Update by iterating table in batches faster than whole table in PostgreSQL
108071
Find unique columns and column membership
45813
QUERY - pivot multiple columns, variable number of rows
88990
Swapping column values in MySQL
50167
Is there any reason for an index to contain the primary key?
121962
How to make unique check without creating heavy index in postgres