您可以尝试以下方法：
@H_404_3@'$' || Cast((select avg(retail) from cars where brand = 'FORD' or brand = 'TOYOTA') as decimal(4,2)) as AVG_BRAND_PRICE_01
如果您想要超过$ XX.XX，例如$ XXXXXXX.XX，则需要设置更高的十进制，例如，decimal（9,2）
加$并舍入2位小数SQL
加$并舍入2位小数SQL
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