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Re: Help for fixing update failure due to lock in a outer join table
Posted by: Tian Deng
Date: June 04, 2020 05:30AM

Okay, I understand. Could you help me understand some detail about lock in MySQL?

Suppose there is a procedure like the following. According to MySQL's design, while table tblA being updated, will there be any kind of lock on table tmp_tbl1 ?


Create procedure clc_term_price ( in_key int)
create temporary table IF NOT EXISTS tmp_tbl1
( column1 varchar(255), column2 int,
index tmp_tbl1_index1(column2) );

insert into temp_tbl1 as select * from original_tbl1;

update tblA
left outer join tmp_tbl1
on tmp_tbl1.column2 = tblA.column2
set tblA.column1=tmp_tbl1.column1
where = in_key;


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