如何合并两个表中具有相同列的两个表，以识别MySQL中的差异？

Question

I am not very proficient in MySQL: My questions is I have two tables: t1 and t2

t1

Name, ID  

t2

ID, types

I want to merge both t1 and t2 only columns containing the ID's and identify why I have the difference in these ID's.

Answer 1

You can investigate the mysql function MERGE

An other alternative would be to add the column types in t1 and update it to add missing data. I assume here your types type is VARCHAR(60):

ALTER TABLE table ADD [COLUMN] types VARCHAR(60);

UPDATE t1,t2 SET t1.types=t2.types WHERE t1.ID=t2.ID;

DROP TABLE t2;