how many types of joins are there in mysql or sql [closed]

Answer 1

MySql 13.2.9.2. JOIN Syntax

join_table:
    table_reference [INNER | CROSS] JOIN table_factor [join_condition]
  | table_reference STRAIGHT_JOIN table_factor
  | table_reference STRAIGHT_JOIN table_factor ON conditional_expr
  | table_reference {LEFT|RIGHT} [OUTER] JOIN table_reference join_condition
  | table_reference NATURAL [{LEFT|RIGHT} [OUTER]] JOIN table_factor

SQL Server FROM (Transact-SQL)

 ::= 
{
       ON  
    |  CROSS JOIN  
    | left_table_source { CROSS | OUTER } APPLY right_table_source 
    | [ ( ]  [ ) ] 
}
 ::= 
    [ { INNER | { { LEFT | RIGHT | FULL } [ OUTER ] } } [  ] ]
    JOIN