SELECT hd.id, ar.id AS areaId, hd.PASSWORD, hd.NAME AS username, hd.sex, hd.mobile AS phone, hd.card_number AS cardNumber, hd.address AS address, hd.avatar AS avatarUrl, hd.house_number AS room, hd.sum_integration AS bonus, hd.retrievable_integration AS retrievableIntegration, hd.harmful_integration AS harmfulIntegration, hd.foodwaste_integration AS foodwasteIntegration, hd.use_integration AS useIntegration, hd.other_integration AS otherIntegration, hd.village AS areaName, hd.pid, hd.division_id AS divisionId, hd.login_degree AS loginDegree, hd.province, hd.city, hd.county, hd.street, hd.qr_code AS qrCode, hd.barcode, hd.STATUS, FROM_UNIXTIME( hd.create_time ) AS createTime, FROM_UNIXTIME( hd.update_time ) AS updateTime, hd.oldcard, hd.accounts_code AS accountsCode, hd.type, hd.token, hd.openid, hd.tong_interal AS tongInteral, hd.tong_interal1 AS tongInteral1, hd.vali, CONCAT( '[', hm.number, ']', hm.NAME ) AS homeName, FROM_UNIXTIME( hi.create_time ) AS deliverTime FROM hs_household hd LEFT JOIN hs_management hm ON hd.division_id = hm.id LEFT JOIN hs_area ar ON ar.id = 23 LEFT JOIN hs_integration_log hi ON hi.user_code = hd.id WHERE ( hd.province = ar.NAME OR hd.city = ar.NAME OR hd.county = ar.NAME OR hd.street = ar.NAME ) GROUP BY hd.id LIMIT 1, 10这条sql怎么加索引
时间: 2024-03-20 18:43:52 浏览: 128
这条 SQL 中涉及到的表有 hs_household、hs_management、hs_area、hs_integration_log,您需要根据具体情况来确定需要为哪些字段添加索引。以下是一些可能需要添加索引的字段:
1. hs_household 表的字段:card_number、mobile、division_id
2. hs_management 表的字段:id
3. hs_area 表的字段:id、NAME
4. hs_integration_log 表的字段:user_code、create_time
您可以使用如下命令添加索引:
1. 为 hs_household 表的 card_number、mobile、division_id 字段添加索引:
```
ALTER TABLE hs_household ADD INDEX idx_card_number (card_number);
ALTER TABLE hs_household ADD INDEX idx_mobile (mobile);
ALTER TABLE hs_household ADD INDEX idx_division_id (division_id);
```
2. 为 hs_management 表的 id 字段添加索引:
```
ALTER TABLE hs_management ADD INDEX idx_id (id);
```
3. 为 hs_area 表的 id、NAME 字段添加索引:
```
ALTER TABLE hs_area ADD INDEX idx_id (id);
ALTER TABLE hs_area ADD INDEX idx_name (NAME);
```
4. 为 hs_integration_log 表的 user_code、create_time 字段添加索引:
```
ALTER TABLE hs_integration_log ADD INDEX idx_user_code (user_code);
ALTER TABLE hs_integration_log ADD INDEX idx_create_time (create_time);
```
当然,您需要根据具体情况来确定哪些字段需要添加索引,避免添加过多的索引导致查询性能下降。