to filter data with SQL using multiple conditions. The AND, OR, and NOT operators allow you to combine two or more conditions in a SQL query. The AND operator returns only the rows that satisfy ...

When handling complex SQL queries ... that are not sargable, such as UPPER(column) = 'VALUE' instead of column = 'VALUE', can prevent the use of an index on column. Furthermore, OR conditions ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables ... containing data from both queries. There’s no JOIN or condition to meet.

In May 1974, Donald Chamberlin and Raymond Boyce published a paper on SEQUEL, a structured query ... at SQL, you may ask why it has survived—even thrived—for so long. It is certainly not ...

and multiple features of location data are not considered by them simultaneously. In this paper, we propose a privacy-preserving optimal location query scheme PPOLQ that supports multiple-condition ...