Best way to test if a row exists in a MySQL table

Best way to test if a row exists in a MySQL table

sql mysql performance exists

sql

Only one expression can be specified in the select list when the subquery is not introduced with EXISTS

sql sql-server tsql exists

sql

Select rows which are not present in other table

sql postgresql null left-join exists

sql

SQL - IF EXISTS UPDATE ELSE INSERT INTO

mysql sql insert exists

sql

sql: check if entry in table A exists in table B

sql exists

sql

How to use SQL Select statement with IF EXISTS sub query?

sql sql-server exists

sql

SQL Server: IF EXISTS ; ELSE

sql sql-server if-statement exists

sql

PL/pgSQL checking if a row exists

sql postgresql plpgsql postgresql-9.1 exists

sql

Select columnValue if the column exists otherwise null

sql sql-server select exists

sql

SQL: Return "true" if list of records exists?

sql boolean conditional-statements exists

sql

Check if extended property description already exists before adding

sql sql-server exists extended-properties database-table

sql

Checking whether an item does not exist in another table

sql oracle exists anti-join

sql

Set Variable value in exists condition sql server

sql sql-server sql-server-2008 exists

sql

Oracle sql return true if exists question

sql oracle if-statement exists

sql

How to exclude records with certain values in sql select

sql sql-server tsql exists

sql