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[Enhancement Request] Online DDL Should't Copy Whole Table Data In Some Simple Case #565

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newborn22 opened this issue Nov 1, 2024 · 0 comments
Open

[Enhancement Request] Online DDL Should't Copy Whole Table Data In Some Simple Case #565

newborn22 opened this issue Nov 1, 2024 · 0 comments
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enhancement New feature or request

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@newborn22
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Background

Online ddl will copy the whole table data when renaming a column.

set @@ddl_strategy='online';
alter table mysql.t1 rename column username to user_name;

Proposal

Identify these cases.
@newborn22 newborn22 added the enhancement New feature or request label Nov 1, 2024
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@newborn22