shape{select area from invest where gl='true' group by area } append ({ select * from invest where gl='true' order by id desc} relate area to area) as cha
其中shape()append()as cha 是用来干什么的?我怎么从来没见过!查了半天资料也不知道什么意思
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这段sql语句是什么意思?access数据库
shape{select area from invest where gl='true' group by area } append ({ select * from invest where gl='true' order by id desc} relate area to area) as cha 其中shape()append()as cha 是用来干什么的?我怎么从来没见过!查了半天资料也不知道什么意思