Question

我有一个像这样的关键字表：

CREATE TABLE `keywords` ( 
    `keyword` VarChar( 48 ) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
    `id` Int( 11 ) AUTO_INCREMENT NOT NULL,
    `blog_posts_fulltext_count` Int( 11 ) NOT NULL,
    PRIMARY KEY ( `id` ) )

我还有一张博客帖子表格，如下所示：

CREATE TABLE `blog_posts` ( 
    `id` Int( 11 ) AUTO_INCREMENT NOT NULL,
    `title` LongText CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL,
    `summary` LongText CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL,
    PRIMARY KEY ( `id` ) );

CREATE FULLTEXT INDEX `title_summary_fulltext` ON `blog_posts`( `title`, `summary` );

如您所见，我在title中的summary，blog_posts字段上有一个全文索引。

以下搜索正确运行：

select count(*) from blog_posts where match(title,summary) against ('paid');

现在，我想用keywords.blog_posts_fulltext_count出现在blog_posts中的行数填充字段keyword。

运行此命令时：

UPDATE
    keywords k
SET
    k.blog_posts_count = (select count(*) 
      from blog_posts where match(title,summary) 
      against (keyword));

...我得到：

“再次使用不正确的参数”

如果我这样运行它，我会得到相同的错误：

UPDATE
    keywords k
SET
    k.blog_posts_count = (select count(*) 
      from blog_posts where match(title,summary) 
      against (k.keyword)); -- <== "k" used to specify the table field `keyword` comes from

我想念什么？

MySQL：使用全文搜索结果的Count（）填充字段吗？

0 个答案: