Enable UNC (c$, d$) on windows 7

Windows Registry Editor Version 5.00
 
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
"LocalAccountTokenFilterPolicy"=dword:00000001

Receive doPostBack params

Javascript:

__doPostBack("btnQuery", '123456');

Code behind:

string target = Request.Params["__EVENTTARGET"];  // btnQuery
string args = Request.Params["__EVENTARGUMENT"];  // 123456

Query all columns of all tables

SELECT
    a.TABLE_NAME                as 表格名稱,
    b.COLUMN_NAME               as 欄位名稱,
    b.DATA_TYPE                 as 資料型別,
    b.CHARACTER_MAXIMUM_LENGTH  as 最大長度,
    b.COLUMN_DEFAULT            as 預設值,
    b.IS_NULLABLE               as 允許空值,
    (
        SELECT
            value
        FROM
            fn_listextendedproperty (NULL, 'schema', 'dbo', 'table', a.TABLE_NAME, 'column', default)
        WHERE
            name='MS_Description' 
            and objtype='COLUMN' 
            and objname Collate Chinese_Taiwan_Stroke_CI_AS = b.COLUMN_NAME
    ) as 欄位備註
FROM
    INFORMATION_SCHEMA.TABLES  a
    LEFT JOIN INFORMATION_SCHEMA.COLUMNS b ON ( a.TABLE_NAME=b.TABLE_NAME )
WHERE
    TABLE_TYPE in ('BASE TABLE','VIEW')
ORDER BY
    a.TABLE_NAME, ordinal_position

CTE, recursive search

WITH DepartmentSearch(DeptID, DeptParent, DeptName, OuID)
AS
(
    -- 找出簽核者所屬部門
    SELECT d.DeptID, d.DeptParent, d.DeptName, d.OuID
    FROM tbDepartment d
    LEFT JOIN tbEmpDept ed ON ed.DeptID = d.DeptID
    INNER JOIN tbFlowApprove fa ON fa.Approver = ed.EmpID
    WHERE fa.FlowInsID = @FlowInsID AND fa.FlowAct = @FlowAct AND fa.ActAppendix IS NULL
    UNION ALL
    -- 遞迴向上找出主管部門
    SELECT d.DeptID, d.DeptParent, d.DeptName, d.OuID
    FROM tbDepartment d
    INNER JOIN DepartmentSearch ON DepartmentSearch.DeptParent = d.DeptID
)
SELECT * FROM DepartmentSearch

other ref: 一般資料表運算式(Common Table Expressions, CTE)

Convert relative url to absolute

Uri baseUri = new Uri("http://www.domain.com/path/sample");
Uri absoluteUri = new Uri(baseUri, "../../other/path");

Uri uri;
Uri.TryCreate("http://www.domain.com/base/uri", "../relative/uri", out uri);