/// <summary>
/// 查询表字段信息
/// </summary>
/// <param name="tableId"></param>
/// <returns></returns>
public async Task <IEnumerable <TableFieldInfo> > GetFieldInfosAsync(int tableId)
{
string sql = @"SELECT
FieldName = a.name,
IsIdentity = case when COLUMNPROPERTY(a.id, a.name,'IsIdentity')= 1 then '√'else '' end,
FieldType = b.name,
OccupiedByte = a.length,
TypeLength = COLUMNPROPERTY(a.id, a.name, 'PRECISION'),
NumericScale = isnull(COLUMNPROPERTY(a.id, a.name, 'Scale'), 0),
'IsNullable' = case when a.isnullable = 1 then '√'else '' end,
DefaultValue = isnull(e.text, ''),
ColumnDescription = isnull(g.[value], '')
FROM
syscolumns a
left join
systypes b
on
a.xusertype = b.xusertype
left join
syscomments e
on
a.cdefault = e.id
left join
sys.extended_properties g
on
a.id = g.major_id and a.colid = g.minor_id
where
a.id = @tableid
order by
a.id,a.colorder";
return(await _dapperDbContext.QueryAsync <TableFieldInfo>(sql, new { tableid = tableId }));
}
public async Task <IEnumerable <Product> > GetAllAsync()
{
return(await _context.QueryAsync <Product>());
}