UNION ALL 您的 SQL 语法有错误；检查与您的 MySQL 服务器版本对应的手册

Question

我使用 Union All 进行两个选择查询。查询双方不同，我必须从表和显示中找到记录。我已尝试以下查询，但出现错误

#1064 - 你的 SQL 语法有错误；检查手册 与您的 MySQL 服务器版本相对应，以便使用正确的语法 第 4 行“as table2”附近

SELECT * FROM 
(select company_id as ID,concat('https://example.com/axy/',`slug`) as url from company22 c where company_name like '%xyz%' and c.is_active = 1 and admin_approved = 1 order by company_id desc limit 0, 1 ) as table1
UNION All
 (SELECT ID, post_title, post_content, post_date FROM `wp_posts` where post_content like  '%xyz%'  and post_status = 'publish' and post_type='table' order by post_date DESC ) as table2

Answer 1

要使其正常工作，您可以从 UNION 创建子查询，或者根本不使用外部选择

SELECT * FROM 
((select company_id as ID,concat('https://example.com/axy/',`slug`) as url from company22 c where company_name like '%xyz%' and c.is_active = 1 and admin_approved = 1 order by company_id desc limit 0, 1 ) 
UNION All
 (SELECT ID, post_title, post_content, post_date FROM `wp_posts` 
 where post_content like  '%xyz%'  
 and post_status = 'publish' 
 and post_type='table' 
 order by post_date 
 DESC )) tab1;

(select company_id as ID,concat('https://example.com/axy/',`slug`) as url from company22 c where company_name like '%xyz%' and c.is_active = 1 and admin_approved = 1 order by company_id desc limit 0, 1 ) 
UNION All
 (SELECT ID, post_title, post_content, post_date FROM `wp_posts` 
 where post_content like  '%xyz%'  
 and post_status = 'publish' 
 and post_type='table' 
 order by post_date 
 DESC )