[英]Mysql error: 1222 when I am creating a new table from two existing tables
Mysql错误:1222从两个现有表创建新表时。 这是我的sql语句,用于从两个现有表创建新表。 请帮助我找到解决此问题的方法,谢谢
CREATE TABLE insurance_db.new_insurance
SELECT * FROM insurance_db.auto_insurance
UNION all
SELECT * FROM insurance_db.home_insurance;
试试这个
CREATE TABLE insurance_db.new_insurance
As (SELECT col1, col2,.... FROM insurance_db.auto_insurance, insurance_db.home_insurance);
看来您试图将SELECT
与不同的列数结合在一起。
例如:
SELECT 1 -- one column
UNION ALL
SELECT 1, 2 -- two colums
导致此错误:
Error Code: 1222. The used SELECT statements have a different number of columns
尝试对两个选择使用确定的columnt-list:
CREATE TABLE insurance_db.new_insurance
SELECT
col1, col2, col3 ...
FROM
insurance_db.auto_insurance
UNION ALL
SELECT
col1, col2, col3 ...
FROM
insurance_db.home_insurance;
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