更改忽略表中的 MySQL 5.6.20 错误

Question

I add this line for add ignore to MySql database :

ALTER IGNORE cms_books_author name ADD UNIQUE(name)

but I get this error:

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 version is : 5.6.20

how do I fix this error? Thank you.

Answer 1

syntax issues

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

adjusted

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] ...