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db
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lj_course_unit_relation.md
lj_course_unit_relation.md
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Cronologia
Originale
lj_course_unit_relation table structure
此表为课程与单元的对应关系的数据结构
field
type
null
default
desc
extra
id
bigint
no
主键
pri
cid
varchar(512)
no
课程编码
uid
varchar(512)
no
单元编码
create_time
smallint
no
now
创建时间
index
unique index on(cid, uid)