MYSQL存储过程中表名使用变量_MySQL
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2022-05-30 12:06:25
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MYSQL存储过程中表名使用变量
# 该存储过程定义了几个传入参数，前缀都是para_
# 该存储过程的此部分功能是，查询根据传入参数动态生成的tbl_name表名的表中
SET tbl_name = CONCAT("result_", para_user);SET @STMT := CONCAT("SELECT COUNT(*) INTO @num_count FROM ", tbl_name ," WHERE rng = '", para_rng ,"' AND north_latitude = ", para_north ," AND bck_datetime = '", para_datetime ,"' AND east_longitude = ", para_east, ";"); PREPARE STMT FROM @STMT; EXECUTE STMT;
注：目前 存储过程 支持动态SQL，函数不支持。
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