的MySQL 5.6.20错误ALTER忽略表

Question

我加入这行添加ignore MySQL数据库：

ALTER IGNORE cms_books_author name ADD UNIQUE(name) 

，但我得到这个错误：

Error 
SQL query: 


ALTER IGNORE cms_books_author name ADD UNIQUE(name) 
MySQL said: Documentation 

#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'efcms_books_author name ADD UNIQUE(name)' at line 1 

MySQL的版本是：5.6.20

我该如何解决这个错误？谢谢。

Answer 1

语法问题

1. alter ignore missing the table keyword
2. syntax should only include the name within the unique index not after the tablename

调整

ALTER IGNORE table cms_books_author ADD UNIQUE(name); 

sqlfiddle

---

alter table syntax

ALTER [ONLINE | OFFLINE] [IGNORE] TABLE tbl_name 
    [alter_specification [, alter_specification] ...] 
    [partition_options] 

... 

alter_specification: 
    table_options 
    | ADD [CONSTRAINT [symbol]] 
     UNIQUE [INDEX|KEY] [index_name] 
     [index_type] (index_col_name,...) [index_option] ...