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  • Question About SQL Query

    - by Ameer
    I am using the below statement to generate age of a person in Oracle SQL and my question is below. SELECT TO_NUMBER(TO_CHAR(CURRENT_DATE,'YYYY'))-TO_NUMBER(TO_CHAR(BIRTH_DATE,'YYYY')) FROM NAME WHERE NAME_ID =NAME_ID This statement is only correct upto so far that I need a statement which could count months and even days in order to get the age.

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  • Problem updating through LINQtoSQL in MVC application using StructureMap, Repository Pattern and UoW

    - by matt
    I have an ASP MVC application using LINQ to SQL for data access. I am trying to use the Repository and Unit of Work patterns, with a service layer consuming the repositories and unit of work. I am experiencing a problem when attempting to perform updates on a particular repository. My application architecture is as follows: My service class: public class MyService { private IRepositoryA _RepositoryA; private IRepositoryB _RepositoryB; private IUnitOfWork _unitOfWork; public MyService(IRepositoryA ARepositoryA, IRepositoryB ARepositoryB, IUnitOfWork AUnitOfWork) { _unitOfWork = AUnitOfWork; _RepositoryA = ARepositoryA; _RepositoryB = ARepositoryB; } public PerformActionOnObject(Guid AID) { MyObject obj = _RepositoryA.GetRecords() .WithID(AID); obj.SomeProperty = "Changed to new value"; _RepositoryA.UpdateRecord(obj); _unitOfWork.Save(); } } Repository interface: public interface IRepositoryA { IQueryable<MyObject> GetRecords(); UpdateRecord(MyObject obj); } Repository LINQtoSQL implementation: public class LINQtoSQLRepositoryA : IRepositoryA { private MyDataContext _DBContext; public LINQtoSQLRepositoryA(IUnitOfWork AUnitOfWork) { _DBConext = AUnitOfWork as MyDataContext; } public IQueryable<MyObject> GetRecords() { return from records in _DBContext.MyTable select new MyObject { ID = records.ID, SomeProperty = records.SomeProperty } } public bool UpdateRecord(MyObject AObj) { MyTableRecord record = (from u in _DB.MyTable where u.ID == AObj.ID select u).SingleOrDefault(); if (record == null) { return false; } record.SomeProperty = AObj.SomePropery; return true; } } Unit of work interface: public interface IUnitOfWork { void Save(); } Unit of work implemented in data context extension. public partial class MyDataContext : DataContext, IUnitOfWork { public void Save() { SubmitChanges(); } } StructureMap registry: public class DataServiceRegistry : Registry { public DataServiceRegistry() { // Unit of work For<IUnitOfWork>() .HttpContextScoped() .TheDefault.Is.ConstructedBy(() => new MyDataContext()); // RepositoryA For<IRepositoryA>() .Singleton() .Use<LINQtoSQLRepositoryA>(); // RepositoryB For<IRepositoryB>() .Singleton() .Use<LINQtoSQLRepositoryB>(); } } My problem is that when I call PerformActionOnObject on my service object, the update never fires any SQL. I think this is because the datacontext in the UnitofWork object is different to the one in RepositoryA where the data is changed. So when the service calls Save() on it's IUnitOfWork, the underlying datacontext does not have any updated data so no update SQL is fired. Is there something I've done wrong in the StrutureMap registry setup? Or is there a more fundamental problem with the design? Many thanks.

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  • Is it possible to use multiple languages in .NET resource files?

    - by Gabe Brown
    We’ve got an interesting requirement that we’ll want to support multiple languages at runtime since we’re a service. If a user talks to us using Japanese or English, we’ll want to respond in the appropriate language. FxCop likes us to store our strings in resource files, but I was curious to know if there was an integrated way to select resource string at runtime without having to do it manually. Bottom Line: We need to be able to support multiple languages in a single binary. :)

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  • help with query in access

    - by Gold
    hi i have 2 tables Table A - code|name Table B - barcode|name table B has full barcode and name, Table A has only code i need to run update query that fill name in Table A i try somthing like: update A set name = (select top 1 Name from B where B.Code = mid(A.Barcode,1,8)) but it dos't work

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  • webscraper grabbing images, but not entering info into database

    - by Jason
    Hello, again. I'm having more issues with my script entering info into my database. The script below grabs a page, strips down the necessary info, then downloads the related image file. After that, it is supposed to enter the information gleaned from the URL into the database. For some reason, the script seems to iterate through the URLs, as I get downloaded images for each URL, but each URL's product is not entered into the database. The script will insert the first product's categories and product info, and then it just stops, and continues to download images. Any suggestions? <?php define('IN_PHPBB', true); $phpbb_root_path = (defined('PHPBB_ROOT_PATH')) ? PHPBB_ROOT_PATH : './'; $phpEx = substr(strrchr(__FILE__, '.'), 1); include($phpbb_root_path . 'common.' . $phpEx); include($phpbb_root_path . 'includes/simple_html_dom.' . $phpEx); // Start session management $user->session_begin(); $auth->acl($user->data); $user->setup(); set_time_limit(259200); function save($in, $out) { $ch = curl_init ($in); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_BINARYTRANSFER,1); $rawdata=curl_exec($ch); curl_close ($ch); if(file_exists($out)) { unlink($out); } $fp = fopen($out,'x'); fwrite($fp, $rawdata); fclose($fp); } function scrape($i) { $url = 'http:/xxxxxxxx/index.php?main_page=product_info&products_id='.$i.'&zenid=e4b7dde8de02e1df005d4549e2e3e529'; echo "$url -- "; $exists = file_get_contents($url); if ($exists != false) { $html = file_get_html($url); foreach($html->find('body') as $html) { $test = $html->find('#productName', 0); if ($test) { $item['title'] = trim($html->find('#productName', 0)->plaintext); $item['price'] = trim($html->find('#productPrices', 0)->plaintext); $item['cat'] = $html->find('#navBreadCrumb', 0)->plaintext; list($home, $item['cat'], $item['subcat'], $title) = explode("::", $item['cat']); $item['cat'] = str_replace("&nbsp;", "", $item['cat']); $item['subcat'] = str_replace("\n", "", str_replace("&nbsp;", "", $item['subcat'])); $item['desc'] = trim($html->find('#productDescription', 0)->plaintext); $item['model'] = $html->find('ul#productDetailsList', 0)->find('li', 0)->plaintext; $item['model'] = explode(":", $item['model']); $item['model'] = trim($item['model'][1]); $item['manufacturer'] = $html->find('ul#productDetailsList', 0)->find('li', 1)->plaintext; $item['manufacturer'] = explode(":", $item['manufacturer']); $item['manufacturer'] = trim($item['manufacturer'][1]); foreach($html->find('img') as $img) { if($img->alt == $item['title']) { $item['img_sm'] = $img->src; } } $ret[] = $item; } } $html->clear(); unset($html); unset($item); return $ret; } else { echo "Could not find page<br />"; } unset($exists); } $i = 1; $end = 9999999; while($i < $end) { $ret = scrape($i); if(isset($ret)) { foreach($ret as $v) { $item['title'] = $v['title']; $item['price'] = $v['price']; $item['desc'] = $v['desc']; $item['model'] = $v['model']; $item['manufacturer'] = $v['manufacturer']; $item['image'] = $v['image']; $item['cat'] = $v['cat']; $item['subcat'] = $v['subcat']; $item['img_sm'] = $v['img_sm']; } unset($ret); unset($v); $sm_img_src = "http://xxxxxx/".$item['img_sm']; $ext = strrchr($item['img_sm'], '.'); $filename = $item['model'] . $ext; $lg_img_src = "http://xxxxx/images/STC/".$filename; $new_sm = "./rip_images/small/{$filename}"; $new_lg = "./rip_images/large/{$filename}"; $item['image'] = $filename; save($lg_img_src,$new_lg); save($sm_img_src,$new_sm); //see if parent cat exists $sql = 'SELECT cat_id FROM ' . SHOP_CAT_TABLE . ' WHERE cat_name = "'.$db->sql_escape($item['cat']).'"'; $result = $db->sql_query($sql); $parent = $db->sql_fetchrow($result); $db->sql_freeresult($result); // if not exists if($parent['cat_id'] == '') { //add the parent cat to the db $sql_ary = array( 'cat_name' => $item['cat'], 'cat_parent' => 0 ); $sql = 'INSERT INTO '.SHOP_CAT_TABLE.' '.$db->sql_build_array('INSERT', $sql_ary); $db->sql_query($sql); $cat_id = $db->sql_nextid(); //see if subcat exists $sql = 'SELECT cat_id FROM ' . SHOP_CAT_TABLE . ' WHERE cat_name = "'.$db->sql_escape($item['subcat']).'"'; $result = $db->sql_query($sql); $row = $db->sql_fetchrow($result); $db->sql_freeresult($result); // if not exists if($row['cat_id'] == '') { //add subcat to db $sql_ary = array( 'cat_name' => $db->sql_escape($item['subcat']), 'cat_parent' => $cat_id ); $sql = 'INSERT INTO '.SHOP_CAT_TABLE.' '.$db->sql_build_array('INSERT', $sql_ary); $db->sql_query($sql); $item_cat = $db->sql_nextid(); } else //if exists { $item_cat = $row['cat_id']; } } else //if parent cat exists { //see if subcat exists $sql = 'SELECT cat_id FROM ' . SHOP_CAT_TABLE . ' WHERE cat_name = "'.$db->sql_escape($item['subcat']).'"'; $result = $db->sql_query($sql); $row = $db->sql_fetchrow($result); $db->sql_freeresult($result); // if not exists if($row['cat_id'] == '') { //add the subcat to the db $sql_ary = array( 'cat_name' => $db->sql_escape($item['subcat']), 'cat_parent' => $parent['cat_id'] ); $sql = 'INSERT INTO '.SHOP_CAT_TABLE.' '.$db->sql_build_array('INSERT', $sql_ary); $db->sql_query($sql); $item_cat = $db->sql_nextid(); } else //if exists { $item_cat = $row['cat_id']; } } $sql_ary = array( 'item_title' => $db->sql_escape($item['title']), 'item_price' => $db->sql_escape($item['price']), 'item_desc' => $db->sql_escape($item['desc']), 'item_model' => $db->sql_escape($item['model']), 'item_manufacturer' => $db->sql_escape($item['manufacturer']), 'item_image' => $db->sql_escape($item['image']), 'item_cat' => $db->sql_escape($item_cat) ); $sql = 'INSERT INTO ' . SHOP_ITEM_TABLE . ' ' . $db->sql_build_array('INSERT', $sql_ary); $db->sql_query($sql); garbage_collection(); echo 'Done<br />'; } $i++; unset($item); } ?>

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  • How can i resolve the N+1 Selects problem ?

    - by Maxime ARNSTAMM
    Hello everyone, I have trouble understanding how to avoid the n+1 select in jpa or hibernate. From what i read, there's the 'left join fetch', but i'm not sure if it still works with more than one list (oneToMany).. Could someone explain it to me, or give me a link with a clear complete explanation please ? I'm sorry if this is a noob question, but i can't find a real clear article or doc on this issue. Thanks

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  • Tuples vs. Anonymous Types vs. Expando object. (in regards to LINQ queries)

    - by punkouter
    I am a beginner who finally started understanding anonymous types. (see old post http://stackoverflow.com/questions/3010147/what-is-the-return-type-for-a-anonymous-linq-query-select-what-is-the-best-way-t) So in LINQ queries you form the type of return value you want within the linq query right? It seems the way to do this is anonymous type right? Can someone explain to me if and when I could use a Tuple/Expando object instead? They all seem very simliar?

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  • [Reloaded] Error while sorting filtered data from a GridView

    - by Bogdan M
    Hello guys, I have an error I cannot solve, on a ASP.NET website. One of its pages - Countries.aspx, has the following controls: a CheckBox called "CheckBoxNAME": < asp:CheckBox ID="CheckBoxNAME" runat="server" Text="Name" /> a TextBox called "TextBoxName": < asp:TextBox ID="TextBoxNAME" runat="server" Width="100%" Wrap="False"> < /asp:TextBox> a SQLDataSource called "SqlDataSourceCOUNTRIES", that selects all records from a Table with 3 columns - ID (Number, PK), NAME (Varchar2(1000)), and POPULATION (Number) called COUNTRIES < asp:SqlDataSource ID="SqlDataSourceCOUNTRIES" runat="server" ConnectionString="< %$ ConnectionStrings:myDB %> " ProviderName="< %$ ConnectionStrings:myDB.ProviderName %> " SelectCommand="SELECT COUNTRIES.ID, COUNTRIES.NAME, COUNTRIES.POPULATION FROM COUNTRIES ORDER BY COUNTRIES.NAME, COUNTRIES.ID"> < /asp:SqlDataSource> a GridView called GridViewCOUNTRIES: < asp:GridView ID="GridViewCOUNTRIES" runat="server" AllowPaging="True" AllowSorting="True" AutoGenerateColumns="False" DataSourceID="SqlDataSourceCOUNTRIES" DataKeyNames="ID" DataMember="DefaultView"> < Columns> < asp:CommandField ShowSelectButton="True" /> < asp:BoundField DataField="ID" HeaderText="Id" SortExpression="ID" /> < asp:BoundField DataField="NAME" HeaderText="Name" SortExpression="NAME" /> < asp:BoundField DataField="POPULATION" HeaderText="Population" SortExpression="POPULATION" /> < /Columns> < /asp:GridView> a Button called ButtonFilter: < asp:Button ID="ButtonFilter" runat="server" Text="Filter" onclick="ButtonFilter_Click"/> This is the onclick event: protected void ButtonFilter_Click(object sender, EventArgs e) { Response.Redirect("Countries.aspx?" + (this.CheckBoxNAME.Checked ? string.Format("NAME={0}", this.TextBoxNAME.Text) : string.Empty)); } Also, this is the main onload event of the page: protected void Page_Load(object sender, EventArgs e) { if (Page.IsPostBack == false) { if (Request.QueryString.Count != 0) { Dictionary parameters = new Dictionary(); string commandTextFormat = string.Empty; if (Request.QueryString["NAME"] != null) { if (commandTextFormat != string.Empty && commandTextFormat.EndsWith("AND") == false) { commandTextFormat += "AND"; } commandTextFormat += " (UPPER(COUNTRIES.NAME) LIKE '%' || :NAME || '%') "; parameters.Add("NAME", Request.QueryString["NAME"].ToString()); } this.SqlDataSourceCOUNTRIES.SelectCommand = string.Format("SELECT COUNTRIES.ID, COUNTRIES.NAME, COUNTRIES.POPULATION FROM COUNTRIES WHERE {0} ORDER BY COUNTRIES.NAME, COUNTRIES.ID", commandTextFormat); foreach (KeyValuePair parameter in parameters) { this.SqlDataSourceCOUNTRIES.SelectParameters.Add(parameter.Key, parameter.Value.ToUpper()); } } } } Basicly, the page displays in the GridViewCOUNTRIES all the records of table COUNTRIES. The scenario is the following: - the user checks the CheckBox; - the user types a value in the TextBox (let's say "ch"); - the user presses the Button; - the page loads displaying only the records that match the filter criteria (in this case, all the countries that have names containing "Ch"); - the user clicks on the header of the column called "Name" in order to sort the data in the GridView Then, I get the following error: ORA-01036: illegal variable name/number. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.OracleClient.OracleException: ORA-01036: illegal variable name/number Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Any help is greatly appreciated, tnks. PS: I'm using ASP.NET 3.5, under Visual Studio 2008, with an OracleXE database.

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  • Filter list as a parameter in a compiled query

    - by JK
    I have the following compiled query that I want to return a list of "groups" that don't have a "GroupID" that's contained in a filtered list: CompiledQuery.Compile(ConfigEntities contexty, List list) = from c in context.Groups where (!csList.Contains(c.GroupID)) select c).ToList() However I'm getting the following run-time error: The specified parameter 'categories' of type 'System.Collections.Generic.List`1[[System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c261364e126]]' is not valid. Only scalar parameters (such as Int32, Decimal, and Guid) are supported. Any ideas?

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  • How do I code a loop for my echo statements?

    - by ggg
    <?php defined('_JEXEC') or die('Restricted access'); $db =& JFactory::getDBO(); $query0 = "SELECT * FROM `#__chesspositions` WHERE . . . . ."; //echo $query0; $db->setQuery($query0); $ginfo = $db->loadObjectList(); //echo $ginfo[0]; echo $db->getErrorMsg(); if(empty($ginfo)){ echo "<center><h2 style='color:navy'>No game found, we apologize</h2></center>"; }else{ $query1= "SELECT * FROM `#__chessmoves` WHERE Id='".$ginfo[0]->MoveDataId."'"; $db->setQuery($query1); echo $db->getErrorMsg(); $gmove = $db->loadObjectList(); } //define array; //how do I code a foreach loop (or any other type of loop) here? //I'm having trouble properly defining the array and structuring the syntax. echo "[Event \"".$ginfo[0]->Event."\"]\n"; echo "[Site \"".$ginfo[0]->Site."\"]\n"; echo "[Date \"".$ginfo[0]->Date."\"]\n"; echo "[Round \"".$ginfo[0]->Round."\"]\n"; echo "[White \"".$ginfo[0]->White."\"]\n"; echo "[Black \"".$ginfo[0]->Black."\"]\n"; echo "[Result \"".$ginfo[0]->Result."\"]\n"; echo "[ECO \"".$ginfo[0]->ECO."\"]\n"; echo "[WhiteElo \"".$ginfo[0]->WhiteElo."\"]\n"; echo "[BlackElo \"".$ginfo[0]->BlackElo."\"]\n"; echo "[Annotator \"".$ginfo[0]->Annotator."\"]\n"; echo "[SetUp \"".$ginfo[0]->SetUp."\"]\n"; echo $gmove[0]->MoveData; ?>

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  • Check if row exists, if not add it [MySQL]

    - by Steven
    I need to add a row to a MySQL database table but only if the row doesn't already exist. My database server just went down so I can't test this, but will this work as expected? INSERT INTO `blocks` (`block_file`,`settings_group`) VALUES ('announcements','announcement_settings') WHERE NOT EXISTS (SELECT `block_file`,`settings_group` FROM `blocks` WHERE `block_file`='announcements' AND `settings_group`='announcement_settings') It seems like sound logic. Is this a valid query or is there a better way of doing this?

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  • jQuery drawing and modifying lines and positions

    - by Chris
    I want to allow people to select a feature region on an image using jQuery. This should work similarly to the Facebook tagger except once someone "tags" an area of the image an ellipse should appear with the ability for the user to rotate and scale it. How can I achieve this using jQuery?

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  • How to bind a double precision using psycopg2

    - by user337636
    I'm trying to bind a float to a postgresql double precision using psycopg2. ele = 1.0/3.0 dic = {'name': 'test', 'ele': ele} sql = '''insert into waypoints (name, elevation) values (%(name)s, %(ele)s)''' cur = db.cursor() cur.execute(sql, dic) db.commit() sql = """select elevation from waypoints where name = 'test'""" cur.execute(sql_out) ele_out = cur.fetchone()[0] ele_out 0.33333333333300003 ele 0.33333333333333331 Obviously I don't need the precision, but I would like to be able to simply compare the values. I could use the struct module and save it as a string, but thought there should be a better way. Thanks

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  • filter duplicates in SQL join

    - by Will
    When using a SQL join, is it possible to keep only rows that have a single row for the left table? For example: select * from A, B where A.id = B.a_id; a1 b1 a2 b1 a2 b2 In this case, I want to remove all except the first row, where a single row from A matched exactly 1 row from B. I'm using MySQL.

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  • Is a many-to-many relationship with extra fields the right tool for my job?

    - by whichhand
    Previously had a go at asking a more specific version of this question, but had trouble articulating what my question was. On reflection that made me doubt if my chosen solution was correct for the problem, so this time I will explain the problem and ask if a) I am on the right track and b) if there is a way around my current brick wall. I am currently building a web interface to enable an existing database to be interrogated by (a small number of) users. Sticking with the analogy from the docs, I have models that look something like this: class Musician(models.Model): first_name = models.CharField(max_length=50) last_name = models.CharField(max_length=50) dob = models.DateField() class Album(models.Model): artist = models.ForeignKey(Musician) name = models.CharField(max_length=100) class Instrument(models.Model): artist = models.ForeignKey(Musician) name = models.CharField(max_length=100) Where I have one central table (Musician) and several tables of associated data that are related by either ForeignKey or OneToOneFields. Users interact with the database by creating filtering criteria to select a subset of Musicians based on data the data on the main or related tables. Likewise, the users can then select what piece of data is used to rank results that are presented to them. The results are then viewed initially as a 2 dimensional table with a single row per Musician with selected data fields (or aggregates) in each column. To give you some idea of scale, the database has ~5,000 Musicians with around 20 fields of related data. Up to here is fine and I have a working implementation. However, it is important that I have the ability for a given user to upload there own annotation data sets (more than one) and then filter and order on these in the same way they can with the existing data. The way I had tried to do this was to add the models: class UserDataSets(models.Model): user = models.ForeignKey(User) name = models.CharField(max_length=100) description = models.CharField(max_length=64) results = models.ManyToManyField(Musician, through='UserData') class UserData(models.Model): artist = models.ForeignKey(Musician) dataset = models.ForeignKey(UserDataSets) score = models.IntegerField() class Meta: unique_together = (("artist", "dataset"),) I have a simple upload mechanism enabling users to upload a data set file that consists of 1 to 1 relationship between a Musician and their "score". Within a given user dataset each artist will be unique, but different datasets are independent from each other and will often contain entries for the same musician. This worked fine for displaying the data, starting from a given artist I can do something like this: artist = Musician.objects.get(pk=1) dataset = UserDataSets.objects.get(pk=5) print artist.userdata_set.get(dataset=dataset.pk) However, this approach fell over when I came to implement the filtering and ordering of query set of musicians based on the data contained in a single user data set. For example, I could easily order the query set based on all of the data in the UserData table like this: artists = Musician.objects.all().order_by(userdata__score) But that does not help me order by the results of a given single user dataset. Likewise I need to be able to filter the query set based on the "scores" from different user data sets (eg find all musicians with a score 5 in dataset1 and < 2 in dataset2). Is there a way of doing this, or am I going about the whole thing wrong?

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  • Best way to return result from business layer to presentation layer when using LINQ-to-SQL

    - by samsur
    I have a business layer that has DTOs that are used in the presentation layer. This application uses entity framework. Here is an example of a class called RoleDTO: public class RoleDTO { public Guid RoleId { get; set; } public string RoleName { get; set; } public string RoleDescription { get; set; } public int? OrganizationId { get; set; } } In the BLL I want to have a method that returns a list of DTO. I would like to know which is the better approach: returning IQueryable or list of DTOs. Although I feel that returning IQueryable is not a good idea because the connection needs to be open. Here are the 2 different methods using the different approaches: First approach public class RoleBLL { private servicedeskEntities sde; public RoleBLL() { sde = new servicedeskEntities(); } public IQueryable<RoleDTO> GetAllRoles() { IQueryable<RoleDTO> role = from r in sde.Roles select new RoleDTO() { RoleId = r.RoleID, RoleName = r.RoleName, RoleDescription = r.RoleDescription, OrganizationId = r.OrganizationId }; return role; } Note: in the above method the DataContext is a private attribute and set in the constructor, so that the connection stays opened. Second approach public static List<RoleDTO> GetAllRoles() { List<RoleDTO> roleDTO = new List<RoleDTO>(); using (servicedeskEntities sde = new servicedeskEntities()) { var roles = from pri in sde.Roles select new { pri.RoleID, pri.RoleName, pri.RoleDescription }; //Add the role entites to the DTO list and return. This is necessary as anonymous types can be returned acrosss methods foreach (var item in roles) { RoleDTO roleItem = new RoleDTO(); roleItem.RoleId = item.RoleID; roleItem.RoleDescription = item.RoleDescription; roleItem.RoleName = item.RoleName; roleDTO.Add(roleItem); } return roleDTO; } } Please let me know, if there is a better approach.

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  • Search number entries on a mysql database with COUNT

    - by skiria
    I have a mysql database which allocate: iid, name, description, url, namecategory, idcategory, nametopic, idtopic How can i know the number of entries that has categoryid=1 and topicid=1? I've try $result = mysql_query("SELECT COUNT(id) FROM videos WHERE categoryid=1 AND topicid=1") But it hasn't worked!

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  • t-sql get variable value from string with variable name

    - by Markus
    Hi. Is there a way to convert '@my_variable' string into a value of @my_variable? I have a table which stores names of variables. I need to get the value of this variable. Something like this: DECLARE @second_variable AS NVARCHAR(20); DECLARE @first_variable AS NVARCHAR(20); SET @first_variable = '20'; SET @second_variable = SELECT '@first_variable'; --here I want that @second variable be assigned a value of "20".

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  • convert a sql statement to class?

    - by walter
    Is there a tool or code to convert a sql statement to class? Something like: Dim sqlText = "SELECT CustomerID, Name, Address, City FROM dbo.Customer WHERE CustomerID = 1" Dim obj As New ***SqlStatementTool***(sqlText) obj.GetTables() 'Will Return Tables in sqlText obj.GetWheres() 'Will Return conditions in sqltext obj.GetParameters() 'will return parameters in sqltext

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