匿名通过本文主要向大家介绍了mysql,加减乘除,平均值等相关知识,希望本文的分享对您有所帮助
1.mysql加减乘除操作：
mysql> select score,score+5,score-5,score*5,score/5 from 4a; +-------+---------+---------+---------+---------+ | score | score+5 | score-5 | score*5 | score/5 | +-------+---------+---------+---------+---------+ | 93 | 98 | 88 | 465 | 18.6000 | | 35 | 40 | 30 | 175 | 7.0000 | | 46 | 51 | 41 | 230 | 9.2000 | | 56 | 61 | 51 | 280 | 11.2000 | | 79 | 84 | 74 | 395 | 15.8000 | | 91 | 96 | 86 | 455 | 18.2000 | | 53 | 58 | 48 | 265 | 10.6000 | | 56 | 61 | 51 | 280 | 11.2000 | | 58 | 63 | 53 | 290 | 11.6000 | | 68 | 73 | 63 | 340 | 13.6000 | | 71 | 76 | 66 | 355 | 14.2000 | | 93 | 98 | 88 | 465 | 18.6000 | | 67 | 72 | 62 | 335 | 13.4000 | | 78 | 83 | 73 | 390 | 15.6000 | | 88 | 93 | 83 | 440 | 17.6000 | | 90 | 95 | 85 | 450 | 18.0000 | | 92 | 97 | 87 | 460 | 18.4000 | | 47 | 52 | 42 | 235 | 9.4000 | | 68 | 73 | 63 | 340 | 13.6000 | | 78 | 83 | 73 | 390 | 15.6000 | | 81 | 86 | 76 | 405 | 16.2000 | | 88 | 93 | 83 | 440 | 17.6000 | +-------+---------+---------+---------+---------+ 22 rows in set (0.00 sec)
2.mysql求余操作：
mysql> select score,score%5 from 4a; +-------+---------+ | score | score%5 | +-------+---------+ | 93 | 3 | | 35 | 0 | | 46 | 1 | | 56 | 1 | | 79 | 4 | | 91 | 1 | | 53 | 3 | | 56 | 1 | | 58 | 3 | | 68 | 3 | | 71 | 1 | | 93 | 3 | | 67 | 2 | | 78 | 3 | | 88 | 3 | | 90 | 0 | | 92 | 2 | | 47 | 2 | | 68 | 3 | | 78 | 3 | | 81 | 1 | | 88 | 3 | +-------+---------+ 22 rows in set (0.00 sec)
3.mysql求平均值操作：
mysql> select score,avg(score) from 4a; +-------+------------+ | score | avg(score) | +-------+------------+ | 93 | 71.6364 | +-------+------------+ 1 row in set (0.00 sec)
4.mysql求不等于某数值操作：
mysql> select score,score!=88 from 4a; +-------+-----------+ | score | score!=88 | +-------+-----------+ | 93 | 1 | | 35 | 1 | | 46 | 1 | | 56 | 1 | | 79 | 1 | | 91 | 1 | | 53 | 1 | | 56 | 1 | | 58 | 1 | | 68 | 1 | | 71 | 1 | | 93 | 1 | | 67 | 1 | | 78 | 1 | | 88 | 0 | | 90 | 1 | | 92 | 1 | | 47 | 1 | | 68 | 1 | | 78 | 1 | | 81 | 1 | | 88 | 0 | +-------+-----------+ 22 rows in set (0.00 sec)
以上就是mysql中加减乘除与求余和求平均值以及查询不等于某数值的实例的详细内容，更多请关注微课江湖其它相关文章！