Brent Baisley wrote:
Yes, that will lock up the table while the change is being made. One
technique you can use is to rename the table and create a new to catch
the incoming data.
RENAME TABLE x TO y;CREATE TABLE x LIKE y;
By putting both commands on 1 line, it will execute almost immediately.
If you create the new table first with a different name, then rename to swap the table
names, it will be atomic (multi-table renames are atomic). So this would avoid the
"almost immediately" above:
create table x like y;
rename table y to z, x to y;
Baron
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