44 lines
1.1 KiB
MySQL
44 lines
1.1 KiB
MySQL
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-- https://dev.mysql.com/doc/refman/8.0/en/create-index.html
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/* CREATE [UNIQUE | FULLTEXT | SPATIAL] INDEX index_name
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[index_type]
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ON tbl_name (key_part,...)
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[index_option]
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[algorithm_option | lock_option] ...
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key_part: {col_name [(length)] | (expr)} [ASC | DESC]
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index_option: {
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KEY_BLOCK_SIZE [=] value
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| index_type
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| WITH PARSER parser_name
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| COMMENT 'string'
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| {VISIBLE | INVISIBLE}
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| ENGINE_ATTRIBUTE [=] 'string'
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| SECONDARY_ENGINE_ATTRIBUTE [=] 'string'
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}
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index_type:
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USING {BTREE | HASH}
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algorithm_option:
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ALGORITHM [=] {DEFAULT | INPLACE | COPY}
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lock_option:
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LOCK [=] {DEFAULT | NONE | SHARED | EXCLUSIVE}
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*/
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CREATE UNIQUE INDEX index_name ON table_name (name(10));
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CREATE FULLTEXT INDEX index_name ON table_name (name(10));
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CREATE SPATIAL INDEX index_name ON table_name (name(10));
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CREATE INDEX part_of_name ON customer (name(10));
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CREATE INDEX idx1 ON t1 ((col1 + col2));
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CREATE INDEX idx2 ON t1 ((col1 + col2), (col1 - col2), col1);
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CREATE INDEX id_index ON lookup (id) USING BTREE;
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CREATE INDEX id_index ON t1 (id) COMMENT 'MERGE_THRESHOLD=40';
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CREATE INDEX i1 ON t1 (c1) ENGINE_ATTRIBUTE='{"key":"value"}';
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