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How to create memory table with btree index?

Can you help me to explain, how to create Memory table with B-Tree Index in MySQL?

Answer No: 189

You can specify USING clause provided by MySQL at table creation time to ask for B-Tree Index on a particular column. The following example declares a B-Tree index on the username column:

CREATE TABLE users (
id SMALLINT UNSIGNED NOT NULL AUTO_INCREMENT,
username CHAR(15) NOT NULL,
pwd CHAR(15) NOT NULL,
INDEX USING BTREE (username),
PRIMARY KEY(id)
) Engine=MEMORY;

Related MySQL FAQs to the Above FAQ

When-should-we-use-memory-engine When should we use memory engine?

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