Wrong SQL query built on table structure index for new column

[williamdes]

Describe the bug

The SQL preview contains Array

To Reproduce

POST /table/indexes

db: 2fa
table: aes
old_index[Key_name]: un1
old_index[Index_comment]: 
old_index[Index_choice]: UNIQUE
old_index[Key_block_size]: 
old_index[Parser]: 1
old_index[Index_type]: BTREE
old_index[columns][0][col_index]: 0
old_index[columns][0][size]: 
token: 3d63767e5c37734a2f4e5d3142397025
index[Key_name]: un1
index[Key_block_size]: 
index[Index_type]: BTREE
index[Parser]: 1
index[Index_comment]: 
index[columns][names][]: 0
index[columns][sub_parts][]: 
do_save_data: 1
preview_sql: 1
ajax_request: 1
_nocache: 1615504977578138470
token: 3d63767e5c37734a2f4e5d3142397025

Table::getSqlQueryForIndexCreateOrEdit thinks that it is not an array.

-- Array is incorrect
ALTER TABLE `2fa`.`aes` DROP INDEX Array, ADD UNIQUE `un1` (`0`) USING BTREE;

Expected behavior

Contain a plausible index name

Server configuration

• phpMyAdmin version: 5.1

[shucon]

Are you working on this? I can work on it otherwise but I'm not sure about the steps to reproduce it.

[williamdes]

Are you working on this? I can work on it otherwise but I'm not sure about the steps to reproduce it.

No, you can reproduce this by trying to add a new column, then choose an index type like UNIQUE and then just follow my screenshot and sql preview

[shucon]

Working on it! Thanks.