截断不正确的双精度值：'-'

Question

我是mysql的新手。我试图将两列与介于两者之间的-组合在一起，但我遇到了错误。如果有人能给我建议，我将非常感谢。我在这部分遇到了错误：,x_end_year +"-" +x_start_month+"-01",

错误代码：1292截断的DOUBLE值不正确："-">

INSERT INTO earning (id, dateCreated, dateModified, x_t_name, x_start_date, 
x_end_month, x_address, x_category, x_pic, x_promo_space, 
x_start_month, x_space_query, x_organizer, x_end_date, 
x_address_query, x_current_pic, x_start_year, x_end_year,
x_event_title, x_pix_name),
SELECT x_idx, dateCreated, dateModified, "" , x_end_year +"-" +x_start_month+"-01",
x_end_month, "address1", "", x_current_pic, "", x_start_month, "''", "", 
x_end_year +"-" +x_end_month+"-01", "'address1'", x_current_pic, x_end_year, 
x_end_year, "", ""
FROM Sale
WHERE id = 'x1'

Answer 1

您只需要使用CONCAT。这是一个样品。

SELECT CONCAT (column1, column2, '-', column3, column4)