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頁數 2 / 32 上一頁 下一頁
搜尋 EN 結果:
postgreSql 大型 table 跑 Count 非常慢
可參考本文章:

https://dba.stackexchange.com/questions/245990/postgresql-extremely-slow-count-with-index-simple-query

vacuum analyze insider_event;
執行了 7 分鐘

ALTER TABLE insider_event SET (autovacuum_vacuum_scale_factor = 0, autovacuum_analyze_scale_factor = 0,  autovacuum_vacuum_threshold = 10000, autovacuum_analyze_threshold = 10000);

跑了 1.2 分鐘

修改 work_mem:
https://www.pgmustard.com/blog/work-mem

記憶體調整
https://www.enterprisedb.com/postgres-tutorials/how-tune-postgresql-memory
More...
Bike, 2024/2/5 上午 06:55:40
Restful 的 API 範例
Restful 的 API 範例,比較特別的是取得單一筆資料時,不是用一般常見的 {id} 而是用 get?id=xxx 的方式,以避免 XXS 的功擊。(不要把原網頁中的參數拼入 API 網址,要改用 Query String 的方式傳給 API)

using Ds;
using Ds.Gv;
using iText.Kernel.Geom;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using NPOI.SS.Formula.Functions;
using NPOI.SS.Util;
using Su;
using System.Linq.Expressions;

namespace CallCampaign.Api
{
    /// <summary>
    /// 行銷活動
    /// </summary>
    [Route("api/call-campaign")]
    [ApiController]
    [SetAuthorizationFilter(Sh.AuthCode.不設限)]
    public class ReserveCampaignController : Controller
    {
        /// <summary>
        /// 取得行銷活動列表
        /// </summary>
        /// <param name="reserveCampaignName"></param>
        /// <param name="currentPage"></param>
        /// <param name="pageSize"></param>
        /// <param name="orderByName"></param>
        /// <param name="sort"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        [HttpGet("")]
        public async Task<object> ListAsync([FromQuery] string reserveCampaignName = "", [FromQuery] int? currentPage = 1, [FromQuery] int? pageSize = 20, [FromQuery] string orderByName = "OrderNo", [FromQuery] string sort = "asc")
        {
            if (pageSize > 500)
            {
                pageSize = 500;
            }

            if (!(sort == "asc" || sort == "desc"))
            {
                throw new CustomException(System.Net.HttpStatusCode.BadRequest, "sort只能是asc或desc");
            }

            var temp = new V_ReserveCampaign().GetType().GetProperty(orderByName);
            if (temp == null)
            {
                throw new CustomException(System.Net.HttpStatusCode.BadRequest, "不存在欄位");
            }

            Expression<Func<V_ReserveCampaign, bool>> q = p => p.Is_Deleted == "N"
                    && (string.IsNullOrEmpty(reserveCampaignName) || (p.ReserveCampaignName != null && p.ReserveCampaignName.Contains(reserveCampaignName)))
                    ;

            if (orderByName.ToLower().Trim() != "id")
            {
                orderByName += " " + sort + ", id desc";
            }
            else
            {
                orderByName += " " + sort;
            }

            var ct = NewContext.GvContext;
            var list = await ct.GetPageListAsync(q, columns: "Id, ReserveCampaignName, OrderNo, StartAt, EndAt, ModifierName, ModifyDate, CreatorName, CreateDate", page: currentPage ?? 1, pageSize: pageSize ?? 20, orderByName);
            //var list = await ct.GetPageListAsync(q, page: currentPage ?? 1, pageSize: pageSize ?? 20, orderByName + " " + sort);
            return list;
        }

        /// <summary>
        /// 取得行銷活動
        /// </summary>
        /// <param name="Id"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        [HttpGet("get")]
        public async Task<dynamic> GetAsync([FromQuery] int Id)
        {
            var res = await Ds.NewContext.GvContext.ReserveCampaigns.Where(r => r.Id == Id)
                .FirstOrDefaultAsync();

            if (res == null)
            {
                throw new CustomException(System.Net.HttpStatusCode.BadRequest, "查無資料 " + Id.ToString());
            }
            return res;
        }
                
        /// <summary>
        /// 建立行銷活動
        /// </summary>
        /// <param name="dto"></param>
        /// <returns></returns>
        /// <exception cref="CustomException"></exception>
        [HttpPost("")]
        public async Task<object> CreateAsync(Dtos.CreateReserveCampaign dto)
        {
            var ct = NewContext.GvContext;
            var res = await Models.ReserveCampaignHelper.CreateReserveCampaignAsync(ct, dto);
            return res;
        }

        /// <summary>
        /// 編輯行銷活動
        /// </summary>
        /// <param name="dto"></param>
        /// <returns></returns>
        /// <exception cref="CustomException"></exception>
        [HttpPatch("")]
        public async Task<object> UpdateAsync(Dtos.UpdateReserveCampaign dto)
        {
            var ct = NewContext.GvContext;
            var res = await Models.ReserveCampaignHelper.UpdateReserveCampaignAsync(ct, dto);
            return res;
        }

        /// <summary>
        /// 刪除行銷活動
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        /// <exception cref="CustomException"></exception>
        [HttpDelete("")]
        public async Task<object> DeleteAsync([FromQuery] int id)
        {
            var res = await Ds.NewContext.GvContext.MarkDeleteAsync<Ds.Gv.ReserveCampaign>(id, Sh.ModifyInfo);
            return res;
        }
    }
}



再增加一個同步範例(只例出 action)


        /// <summary>
        /// 取得列表
        /// </summary>
        /// <param name="name"></param>
        /// <param name="currentPage"></param>
        /// <param name="pageSize"></param>
        /// <param name="orderByName"></param>
        /// <param name="sort"></param>
        /// <returns></returns>
        [HttpGet("")]
        public object List([FromQuery] string name = "", [FromQuery] int? currentPage = 1, [FromQuery] int? pageSize = 20, [FromQuery] string orderByName = "OrderNo", [FromQuery] string sort = "asc")
        {
            return "";
        }

        /// <summary>
        /// 取得明細資料
        /// </summary>
        /// <param name="Id"></param>
        /// <returns></returns>
        /// <exception cref="Exception"></exception>
        [HttpGet("get")]
        public object Get([FromQuery] int id)
        {
            return "";
        }

        /// <summary>
        /// 建立
        /// </summary>
        /// <param name="dto"></param>
        /// <returns></returns>
        /// <exception cref="CustomException"></exception>
        [HttpPost("")]
        public object Create(Dtos.PhysicalCheckUpType dto)
        {
            return "";
        }

        /// <summary>
        /// 編輯
        /// </summary>
        /// <param name="dto"></param>
        /// <returns></returns>
        /// <exception cref="CustomException"></exception>
        [HttpPatch("")]
        public object Update(Dtos.PhysicalCheckUpType dto)
        {
            return "";
        }

        /// <summary>
        /// 刪除
        /// </summary>
        /// <param name="id"></param>
        /// <returns></returns>
        /// <exception cref="CustomException"></exception>
        [HttpDelete("")]
        public object Delete([FromQuery] int id)
        {
            return 1;
        }
More...
Bike, 2023/12/13 上午 08:54:28
前端 頁面讀入 API取值工具

PromiseAll: async function (array) {
    let taskList = [];
    let propList = [];
    for (let obj of array) {
        for (let prop in obj) {
            taskList.push(obj[prop]);
            propList.push(prop);
        }
    }
    let resp = await Promise.all(taskList);
    let result = {};
    let counter = 0;
    for (let prop of propList) {
        result[prop] = resp[counter];
        counter += 1;
    }
    return result;
}

PromiseAll 是將API一次發送並接收回傳值的工具
使用方法範例:

const taskList = [{
    adPosition : BannerPositionDataService.GetList(),
    big : BannerDataService.GetList(100),
    smallTop : BannerDataService.GetOne(200),
    smallBottom : BannerDataService.GetOne(300),
    section2 : BannerDataService.GetList(400),
    section3 : BannerDataService.GetList(500),
    section4 : BannerDataService.GetList(600),
    recommends : ProductDataService.GetRndList()
}];

let resps = await UJ.PromiseAll(taskList);

要特別記得TaskList中的Method不需要做await,不然就沒有意義了


DeepBinding: function (vueData, data) {

    if (Array.isArray(data)) {
        if (!Array.isArray(vueData)) {
            vueData = [];
        } else {
            vueData.splice(0);
        }
        for (let prop in data) {
            vueData.push(data[prop]);
        }
    }
    else if (typeof (data) === 'object') {
        if (Object.keys(data).length === 0) {
            return;
        }
        for (let prop in data) {
            if (vueData[prop] === undefined || data[prop] === null ||
                (!Array.isArray(vueData[prop] && vueData !== null && typeof (data) !== 'object'))) {
                vueData[prop] = data[prop];
            } else {
                this.DeepBinding(vueData[prop], data[prop]);
            }
        }
    } else {
        vueData = data;
    }
}

在資料回傳後要Binding到Vue Data上面或是任意Object的Property上可以使用這個,
不使用DeepBinding是因為瀏覽器版本限制,這個方式不受瀏覽器版本限制,但是只有提供一階,需要多階請自行改寫.
使用方法範例:

UJ.DeepBinding(this, resp);

這邊的this代表的是Vue的Data
 
More...
梨子, 2023/11/24 上午 11:05:08
highlight.js
程式碼上色

https://highlightjs.org/

Vue
https://github.com/highlightjs/vue-plugin

中文
https://fenxianglu.cn/highlight.html?theme=atom-one-light

 
More...
hannah, 2023/9/18 下午 03:46:03
AddPath優化
改寫成可輸入多參數,效能也比較好的版本。
以下為測試碼,請自行依照專案需求做修改。

var root = "C://wdqd/qwewq";
var addPath = @"//\\/fwef/qwf";
var addPath2 = @"5fwfef/qwf";
var addPath3 = @"//fwef/qwf";
var addPath4 = @"\\\fwef/qwf";
var addPath5 = @"\\\\\/fwef/qwf";


var result = root.AddPath(addPath, addPath2, addPath3, addPath4, addPath5);

Console.WriteLine(result);

public static class Helper
{
    public static string AddPath(this string value, params string[] addPaths)
    {
        if (string.IsNullOrEmpty(value))
        {
            throw new Exception("起始目錄不可以為空字串");
        }

        if (value.Contains("..") || addPaths.Any(x => x.Contains("..")))
        {
            throw new Exception($"value: {value}, addPaths: {addPaths.Where(x => x.Contains("..")).ToOneString()} 檔名與路徑不可包含 ..");
        }

        var paths = addPaths.Select(x => x.Substring(x.FindLastContinuousCharPosition('/', '\\') + 1).SafeFilename()).ToList();

        if (paths.Any(x => System.IO.Path.IsPathRooted(x)))
        {
            throw new Exception("不可併入完整路徑 ..");
        }

        paths.Insert(0, value.SafeFilename());

        return System.IO.Path.Combine(paths.ToArray());
    }

    public static string ToOneString<T>(this IEnumerable<T> list, string separator = ",")
    {
        var strList = list.Select(x => x.ToString());
        return string.Join(separator, strList);
    }

    public static int FindLastContinuousCharPosition(this string input, params char[] targets)
    {
        int lastPosition = -1;

        for (int i = 0; i < input.Length; i++)
        {
            if (targets.Contains(input[i]))
            {
                lastPosition = i;
            }
            else
            {
                break;
            }
        }

        return lastPosition;
    }

    public static string SafeFilename(this string value)
    {
        return GetValidFilename(value);
    }

    public static string GetValidFilename(string value)
    {
        string ValidFilenameCharacters = @"0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\-_$.@:/# ";
        if (value.Contains(".."))
        {
            throw new Exception("路徑中不可包含 .. ");
        }

        string newUrl = "";
        for (int i = 0; i < value.Length; i++)
        {
            var c = value.Substring(i, 1);
            int k = ValidFilenameCharacters.IndexOf(c);
            if (k < 0)
            {
                throw new Exception($"檔名 '{value}' 中有非法的字元 '" + c + "'。");
            }
            newUrl += ValidFilenameCharacters.Substring(k, 1);
        }

        return newUrl;
    }
}
More...
梨子, 2023/8/28 上午 09:43:49
查詢佔用 CPU 的排程
DECLARE @tblVariable TABLE(SPID INT, Status VARCHAR(200), [Login] VARCHAR(200), HostName VARCHAR(200), 
    BlkBy VARCHAR(200), DBName VARCHAR(200), Command VARCHAR(200), CPUTime INT, 
    DiskIO INT, LastBatch VARCHAR(200), ProgramName VARCHAR(200), _SPID INT, 
    RequestID INT)

INSERT INTO @tblVariable
EXEC Master.dbo.sp_who2

SELECT v.*, t.TEXT 
FROM @tblVariable v
INNER JOIN sys.sysprocesses sp ON sp.spid = v.SPID
CROSS APPLY sys.dm_exec_sql_text(sp.sql_handle) AS t
ORDER BY BlkBy DESC, CPUTime DESC

kill xxx

參考: https://learn.microsoft.com/en-us/answers/questions/842347/sql-server-how-to-find-out-who-lock-my-specific-ta
More...
Bike, 2023/8/17 上午 10:44:05
平行序處理多筆資料
由於匯入91訂單,如果是一筆一筆抓,會耗費比較久的時間
下列寫法是,開兩條 thread 平行處理,可以節省約一半時間

public ConcurrentBag<V2SalesOrderGetDataList> ConcurencyGetApp91OrderDetails(List<string> TMCodes, int shopId, ref ConcurrentBag<string> orderErrMsgs)
        {
            #region 平行查詢
            ConcurrentBag<V2SalesOrderGetDataList> result = new ConcurrentBag<V2SalesOrderGetDataList>();
            ConcurrentBag<string> errs = new ConcurrentBag<string>();
            ConcurrentQueue<string> TMCodeQueues = new ConcurrentQueue<string>();
            TMCodes.ForEach(x => TMCodeQueues.Enqueue(x));

            Action searchOrderDetail = () =>
            {
                if (!TMCodeQueues.IsEmpty)
                {
                    string TMCode = string.Empty;

                    while (TMCodeQueues.TryDequeue(out TMCode))
                    {
                        V2SalesOrderGetReqModel reqModel = new V2SalesOrderGetReqModel()
                        {
                            ShopId = shopId,
                            TGCode = null,
                            TMCode = TMCode,
                            TSCode = null,
                        };

                        try
                        {
                            V2SalesOrderGet91API req = new V2SalesOrderGet91API();
                            var resp = req.Execute(reqModel, shopId);

                            if (resp.Status == "Success")
                            {
                                foreach (var l in resp.Data.List)
                                {
                                    result.Add(l);
                                }
                            }
                            else
                            {
                                //主單編號 , 錯誤原因
                                errs.Add(TMCode + " , " + resp.ErrorMessage);
                            }
                        }
                        catch (Exception ex)
                        {
                            errs.Add(TMCode + " , " + ex.Message);
                        }
                    }
                }
            };

            //指派Thread
            Parallel.Invoke(searchOrderDetail, searchOrderDetail);
            #endregion

            //查詢失敗
            orderErrMsgs = errs;

            return result;
        }
More...
darren, 2023/6/19 下午 04:47:30
.net Core環境變數加密方式
簡易執行方式
1. 確定Program.cs有加上Su.Encryption.AesEncryptor.InitAesPaddingEncryptor(secret , iv , encKey , dataRoot)
2. 確定appsettings.json有設定變數,DataRoot、EnvironmentEncKey
3. 先執行一次,會報錯誤,在dataRoot位置會產生一組$"{encKey}.ps1,裡面會放設定環境變數的指令
4. 設定完,記得把 $"{encKey}.ps1檔案刪除
===以上,設定完環境變數===
1. 確定Program.cs有加上Dictionary<string, string> encSetting = Su.Encryption.GetDecryptedSetting
2. 確定appsettings.json有設定變數,DataRoot、EnvironmentEncKey , ShowEncSetting 設定為 false
3. 在 $"{dataRoot}\Config\XXXX_dec.json"設定DBC連線,要注意連線字串要加上  "TrustServerCertificate=true;",因為.net Core一定要藥用SSL連線
4. 設定完之後,在執行一次,會自動產生XXXX.json
5. 刪除XXXX_dec.json
===以上,產生完加密DBC連線
備註,要取回解密連線字串,appsettings.json有設定變數 , ShowEncSetting 設定為 true

概念解說
原本  >> config大多是明文,駭客可以藉由偷到config來知道變數設定,例如  dbc連線資訊、某個APP Key
之後  >> 將重要資訊分成兩段,
appsettings.json  >>  放可公開資訊的設定,例如 DataRoot、EnvironmentEncKey

在環境變數加上一個 由本機產生的隨機變數
讓本機的所有


原理說明
1. .Net Core 啟動時最先執行檔案 Program.cs,在一開頭先檢查本機是否有設定環境變數
緯中用的function Su.Encryption.AesEncryptor.InitAesPaddingEncryptor(secret , iv , encKey , dataRoot)
進階加密標準(英語:Advanced Encryption Standard,縮寫:AES)

沒有的話,會在 dataRoot 這邊產生一個 encKey.ps1的檔案,裡面放有環境變數設定的指令
(encSecretAndIv = Su.Encryption.AesEncryptor.Encrypt(envSecret, envIv, Su.TextFns.GetRandomString(48));
var command = $"[Environment]::SetEnvironmentVariable('{variableName}', '{encSecretAndIv}', 'Machine')";)
(隨機產生48碼亂數,(前32碼為本機專用Secret、後16碼為iv),進行aes加密)




 
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Doug, 2023/6/17 下午 12:04:28
用遞迴查詢所有子部門的 Sql
WITH DepartmentTree AS (
    SELECT       
        Id, 
        Code,
        Name,
        UpDepartmentId,
        1 as Level
    FROM       
        SaintEir_Department
    WHERE Id  = 1
    UNION ALL
    SELECT 
        e.Id, 
        e.Code,
        e.Name,
        e.UpDepartmentId,
        o.Level + 1 as Level
    FROM 
        SaintEir_Department e
        INNER JOIN DepartmentTree o 
            ON o.Id = e.UpDepartmentId
)
SELECT * FROM DepartmentTree;
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Bike, 2023/5/23 上午 11:04:38
XML 的弱掃修正
先貼一下,有空再整理
XmlReaderSettings settings = new XmlReaderSettings();
            settings.DtdProcessing = DtdProcessing.Prohibit;
            settings.XmlResolver = null;            
            XmlReader xmlReader = XmlReader.Create(new StringReader(value), settings);
  
            XmlDocument doc = new XmlDocument();
            doc.XmlResolver = null; //弱掃修正
            doc.Load(xmlReader);
            return doc;
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Bike, 2023/5/17 下午 03:39:43
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