I asked a question and got this reply which helped.
UPDATE TABLE_A a JOIN TABLE_B b
ON a.join_col = b.join_col AND a.column_a = b.column_b
SET a.column_c = a.column_c + 1
Now I am looking to do this if there are 3 tables involved something like this.
UPDATE tableC c JOIN tableB b JOIN tableA a
my question is basically... is this possible to do 3 table join on an UPDATE
statement? and what is the correct syntax for it? Thank you. Do i do the...
JOIN tableB, tableA
JOIN tableB JOIN tableA
the answer is yes
you can
try it like that
UPDATE TABLE_A a
JOIN TABLE_B b ON a.join_col = b.join_col AND a.column_a = b.column_b
JOIN TABLE_C c ON [condition]
SET a.column_c = a.column_c + 1
EDIT:
For general Update join :
UPDATE TABLEA a
JOIN TABLEB b ON a.join_colA = b.join_colB
SET a.columnToUpdate = [something]