From 2778a741a332e1ad7b90de8a33f890f8ee5e8fde Mon Sep 17 00:00:00 2001 From: Mars Liu Date: Mon, 12 Sep 2022 16:28:17 +0800 Subject: [PATCH] fixed mistake question --- .../combinate.md" | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git "a/data/3.MySQL\351\253\230\351\230\266/1.\346\267\261\345\205\245\347\264\242\345\274\225/4.\347\273\204\345\220\210\347\264\242\345\274\225/combinate.md" "b/data/3.MySQL\351\253\230\351\230\266/1.\346\267\261\345\205\245\347\264\242\345\274\225/4.\347\273\204\345\220\210\347\264\242\345\274\225/combinate.md" index 82d1b5a..7b2d5d8 100644 --- "a/data/3.MySQL\351\253\230\351\230\266/1.\346\267\261\345\205\245\347\264\242\345\274\225/4.\347\273\204\345\220\210\347\264\242\345\274\225/combinate.md" +++ "b/data/3.MySQL\351\253\230\351\230\266/1.\346\267\261\345\205\245\347\264\242\345\274\225/4.\347\273\204\345\220\210\347\264\242\345\274\225/combinate.md" @@ -27,7 +27,7 @@ Joe 应该如何优化？ ## 答案 ```sql -alter table goods add index (`stock-id`, category_id, name); +alter table goods add index (stock, category_id, name); ``` ## 选项 @@ -35,7 +35,7 @@ alter table goods add index (`stock-id`, category_id, name); ### A ```sql -alter table goods add index (`stock-id` and category_id and name); +alter table goods add index (stock and category_id and name); ``` ### B @@ -47,5 +47,5 @@ alter table goods add index (concat(stock, category_id, name)); ### C ```sql -alter table goods add index (`stock-id` + category_id + name); +alter table goods add index (stock + category_id + name); ``` -- GitLab