Suitable for most scenarios

Allow duplicate values ​​and null values

Applies to unique value fields

Duplicate values ​​and null values ​​are not allowed

Applies to primary key fields

Unique and does not allow null values

Suitable for multi-column combinations

Improve query efficiency

Applies to spatial data types

Improve spatial query efficiency

Suitable for full-text search

Improve text query efficiency

Works with most index types

Has high query efficiency

Suitable for equivalent queries

Has high insertion and query efficiency

Suitable for frequently accessed indexes

Automatically create hash indexes to improve query efficiency

Create a normal index

Syntax: CREATE INDEX index_name ON table_name (column_list)

Create other types of indexes

Syntax: ALTER TABLE table_name ADD [UNIQUE | FULLTEXT | SPATIAL] INDEX index_name (column_list)

Use indexes to improve query efficiency

Avoid full table scan

Sort using index

Avoid using file sorting

Grouping using index

Avoid using temporary tables

Choose the right index type

Consider index maintenance costs

Design appropriate index columns

Consider index redundancy and independence

Monitor index usage

Delete useless indexes promptly

Index columns participating in calculations may cause index failure

Avoid calculations on indexed columns

Using functions on index columns may cause index failure

Avoid using functions on indexed columns

Inequality used in index columns may cause index failure

Avoid using inequalities on indexed columns

Using OR conditions on index columns may cause index failure

Avoid using OR conditions on index columns

Mismatch in index column data types may cause index failure

Make sure index column data types match

Use the EXPLAIN command to view the query execution plan

Monitor index usage frequency and efficiency

Check index usage regularly

Delete useless indexes to reduce maintenance costs

Use composite indexes to improve query efficiency

Use full-text indexing to improve text query efficiency

Use spatial index to improve spatial query efficiency

Provide index management functions

Visual operation index

Provide index management functions

Visual operation index

Manage indexes using command line tools

Suitable for advanced users