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select
table_name=
(
case when t_c.column_id=1
then t_o.name
else ''
end
),
column_id=t_c.column_id,
column_name=t_c.name,
type=t.name,
max_length=t_c.max_length,
precision=isnull(t_c.precision,0),
scale=isnull(t_c.scale,0),
is_identity=case when t_c.is_identity=1 then '√' else '' end,
is_primary=
(
case when exists
(
select 1 from sys.indexes i,sys.index_columns ic,sys.objects o
where o.type='PK' and o.name=i.name and i.index_id=ic.index_id
and i.object_id=ic.object_id and ic.column_id=t_c.column_id
and o.parent_object_id=t_c.object_id
)
then '√'
else ''
end
),
is_nullable=case when t_c.is_nullable=1 then '√' else '' end,
default_value=isnull(c.definition,''),
description=isnull(e.value,''),
fk_column_name=isnull(f_c.name,''),
fk_table_name=isnull(f_o.name,'')
from sys.columns t_c
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eg:
select * from Exception_Log where DATEDIFF(day,OPER_DATE,getdate())<30 ;
/*
oper_date Ϊ±íÖвéѯ³öÀ´µÄʱ¼ä
getdate()ΪSQLServerÀïÃæ»ñµÃϵͳʱ¼äµÄº¯Êý
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*/
DateDiff º¯Êý
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