Which is faster/best? SELECT * or SELECT column1, colum2, column3, etc...

MYSQL. LIKE-query becomes too long if I use a variable...

Order by extreme performance impact...

Slow MERGE on millions of rows...

Performance Bottleneck with IF NOT EXISTS Subquery...

Limitation of processor resource utilization for specific user...

Should every User Table have a Clustered Index?...

How should I create the most efficient database for a hotel prices?...

how to improve the performance of my SQL query?...

SQL Server query poor performance...

MySQL optimization/performance, how to use limit efficiently | location based selection...

What is the performance impact on applying filters on outer query?...

Rename a table column that has a huge amount of data in SQL...

SQL Statement with the same multiple subqueries running very slow...

Is it better to pivot data in SQL or in my application code?...

Multiple index suggestions with same columns...

Rewriting the query...

Does Oracle allocate different PGA's for the same user when connected from multiple PCs?...

Operator causing tempdb to spill data...

how to get all row count of a table from rowcount after having top row filter...

SQL query with Table variable/Temp Table - which one good in performance...

Can two transactions modify the same row at the same time in Oracle?...

Sql Performance join Vs co-related Subquery...

Optimizing MySQL-Query for removing duplicates and adjusting foreign key references...

Extract data from view ORACLE performance...

How can I speed up my python script?...

Why to use Correlated Subqueries?...

Optimization of Oracle function...

Unique index performance with or without unique column...

How can I optimise this mysql query that includes a where clause with an epoch time range?...