select
top
1
*
from
demotab
where
(
‘
“&start_time&”
‘
<=
start_time
and
‘
“&end_time&”
‘
>=
end_time)
or
—
判断新日期段与原日期段是否存在外包含
(
‘
“&start_time&”
‘
>=
start_time
and
‘
“&end_time&”
‘
<=
end_time)
or
—
判断新日期段与原日期段是否存在内包含
(
‘
“&start_time&”
‘
<=
start_time
and
‘
“&end_time&”
‘
<=
end_time
and
‘
“&end_time&”
‘
>=
start_time)
or
—
判断新日期段与原日期段是否存在左交叉
(
‘
“&start_time&”
‘
>=
start_time
and
‘
“&start_time&”
‘
<=
end_time
and
‘
“&end_time&”
‘
>=
end_time)
—
判断新日期段与原日期段是否存在右交叉
top
1
*
from
demotab
where
(
‘
“&start_time&”
‘
<=
start_time
and
‘
“&end_time&”
‘
>=
end_time)
or
—
判断新日期段与原日期段是否存在外包含
(
‘
“&start_time&”
‘
>=
start_time
and
‘
“&end_time&”
‘
<=
end_time)
or
—
判断新日期段与原日期段是否存在内包含
(
‘
“&start_time&”
‘
<=
start_time
and
‘
“&end_time&”
‘
<=
end_time
and
‘
“&end_time&”
‘
>=
start_time)
or
—
判断新日期段与原日期段是否存在左交叉
(
‘
“&start_time&”
‘
>=
start_time
and
‘
“&start_time&”
‘
<=
end_time
and
‘
“&end_time&”
‘
>=
end_time)
—
判断新日期段与原日期段是否存在右交叉
前提是输入的end_time是大于start_time
如果SQL语句有返回记录则日期有冲突，否则则正确！
如果SQL语句有返回记录则日期有冲突，否则则正确！
版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容， 请联系我们举报，一经查实，本站将立刻删除。
发布者：全栈程序员-站长，转载请注明出处：https://javaforall.net/110489.html原文链接：https://javaforall.net
