---
{
    "title": "CREATE INDEX",
    "language": "zh-CN"
}
---

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# CREATE INDEX

## description

    该语句用于创建索引
    语法：
        CREATE INDEX [IF NOT EXISTS] index_name ON table_name (column [, ...],) [USING BITMAP] [COMMENT'balabala'];
    注意：
        1. 目前只支持bitmap 索引
        2. BITMAP 索引仅在单列上创建

## example

    1. 在table1 上为siteid 创建bitmap 索引
        CREATE INDEX [IF NOT EXISTS] index_name ON table1 (siteid) USING BITMAP COMMENT 'balabala';

## keyword

    CREATE,INDEX