How do I rebuild an index in my database?
Rebuilding an index can improve query performance. Which database system are you using?
I'm using MySQL. What are the steps?
In MySQL, you can use the ALTER TABLE
command. For example: ALTER TABLE table_name DROP INDEX index_name;
followed by ALTER TABLE table_name ADD INDEX index_name (column_name);
.
Is there a way to do this without downtime?
Yes, you can use the ALTER TABLE ... ALGORITHM=INPLACE
option to rebuild the index without locking the table.
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