select (case field_a when 'name_1' then 1 else 0 end )
+(case field_b when 'name_1' then 2 else 0 end )
+(case field_c when 'name_1' then 3 else 0 end )
+(case field_d when 'name_1' then 4 else 0 end )
+(case field_e when 'name_1' then 5 else 0 end )
+(case field_f when 'name_1' then 6 else 0 end )
+(case field_g when 'name_1' then 7 else 0 end )
as num from table1
+(case field_b when 'name_1' then 2 else 0 end )
+(case field_c when 'name_1' then 3 else 0 end )
+(case field_d when 'name_1' then 4 else 0 end )
+(case field_e when 'name_1' then 5 else 0 end )
+(case field_f when 'name_1' then 6 else 0 end )
+(case field_g when 'name_1' then 7 else 0 end )
as num from table1
解决方案 »
免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货