select count(*), risk_level from geohazard_all_english group by risk_level
运行结果:
select count(*), risk_level from geohazard_all_english where risk_level in('较低','低','中','中等','较高','高') group by risk_level
运行结果:
select count(*), risk_level from geohazard_all_english group by risk_level
运行结果:
select count(*), risk_level from geohazard_all_english where risk_level in('较低','低','中','中等','较高','高') group by risk_level
运行结果:
月结各模块关闭情况查询
sql 查询 某字段是否重复
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