结果：
SQL SERVER 竖表变成横表
标签：
SQL SERVER 竖表变成横表
a.MODELID,
max( case a.PNAME when‘计划开始‘ then a.PVALUE end) as RStart,
max( case a.PNAME when ‘计划结束‘ then a.PVALUE end) as Rend
from TB_CONSTRUCTION_PROPERTY as a
group by a.MODELID