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MySQLerror121 & amp; error150 _mysql

Source: Internet
Author: User
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MySQLerror121amp; amp; error150 analysis bitsCN.com
Today, the external keywords are used for writing Database Scripts. two types of errors are encountered during the runtime: 121 and 150. I found a solution on Google. They are explained as follows:
Error 121: this is an error where the names of external keywords are repeated. the names of external keywords cannot be repeated even in different tables. Error 150 contains three types of errors: 1. the types of foreign keys and referenced foreign keys are different. for example, integer and double2. the column to be referenced cannot be found. 3. the character encoding of the table is different from that of lilee84bitsCN.com.

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