Poor Query performance when scalar variables used in Query
66201
Why is my query suddenly slower than it was yesterday?
134347
Unsupported Operand Type for Field Query
22982
Most efficient way to call same Table-Valued Function on multiple columns in a Query
103080
slow query with fulltext and left join
42641
first iteration of sql query not being wrapped properly
143698
Why my sql query run faster than my stored procedure?
83110
JOIN versus EXISTS performance
139653
Must declare scalar variable @Id?
46959
Passing an array to a query using a WHERE clause
5515
Benefits of using backtick (`) in MySQL queries?
65173
SOQL bind variable scope behavior
28755
Performance issues with nested loops and string concatenations
41314
Is there a REAL performance difference between INT and VARCHAR primary keys?
16107
JOIN queries vs multiple queries
135598
ResultSet: Retrieving column values by index versus retrieving by label
24009
How do I bulkify queries for directly or indirectly related records?
77315
How to optimize an Oracle query that has to_char in where clause for date