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MySQL Left Join
The LEFT JOIN clause is used to join two or more tables together. The main table will return all of its rows and the matching rows from the joining tables. If the joining tables don’t have the matching rows then MySQL will use NULL to represent those rows.
SELECT
t1.c1, t1.c2, t2.c1, t2.c2
FROM
main_table_name t1
LEFT JOIN
table2 t2 ON t1.c1 = t2.c1;
Basically, you are getting everything from the main table and the matching rows from the joining tables.
Note that if LEFT JOIN is used with WHERE or/and HAVING then all rows must satisfy all conditions.
MySQL Date TypesMySQL LAST_INSERT_IDMySQL InsertMySQL SelectMySQL WhereMySQL Group ByMySQL Order ByMySQL LimitMySQL LikeMySQL ISNULLMySQL BetweenMySQL JoinMySQL Left JoinMySQL Right JoinMySQL Cross JoinMySQL Self JoinMySQL Sub QueryMySQL UpdateMySQL DeleteMySQL ExplainMySQL IfMySQL Full-Text SearchMySQL INFORMATION_SCHEMAMySQL ConnectionMySQL Server Helpful FunctionsMySQL ViewMySQL Stored ProcedureMySQL FunctionsMySQL TransactionMySQL TriggerMySQL EventMySQL DeadlockMySQL DumpMySQL Reset Root PasswordMySQL interview – Advanced QueriesMySQL JsonMySQL BinlogMySQL Closure Table