文本控件都为null，怎么判断不查询全部呢，应该怎么改

from cscec8b_project_info_ver

where 1=1

${if(len(project_name)>0 && len(project_number)>0,"and project_name='"+project_name+"' and project_number <= '"+project_number+"'"

,"")}

${if(len(project_name)>0 && len(project_number)==0,"and project_name= '"+project_name+"'"

,"")}

${if(len(project_name)==0 && len(project_number)>0,"and project_number <= '"+project_number+"'","")}

limit 1

yikefu 发布于 2021-11-16 16:39 （编辑于 2021-11-16 16:40）

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最佳回答

zsh331Lv8专家互助
发布于2021-11-16 16:59

select *

from cscec8b_project_info_ver

where 1=1

${if(len(project_name)>0 && len(project_number)>0," and project_name='"+project_name+"' and project_number <= '"+project_number+"'",if(len(project_name)>0 && len(project_number)==0," and project_name= '"+project_name+"'",if(len(project_name)==0 && len(project_number)>0," and project_number <= '"+project_number+"'"," and 1=2")))}

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