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  • What are the types and inner workings of a query optimizer?

    - by Frank Developer
    As I understand it, most query optimizers are cost-based. Some can be influenced by hints like FIRST_ROWS(). Others are tailored for OLAP. Is it possible to know more detailed logic about how Informix IDS and SE's optimizers decide what's the best route for processing a query, other than SET EXPLAIN? Is there any documentation which illustrates the ranking of SELECT statements? I would imagine that "SELECT col FROM table WHERE ROWID = n" ranks 1st. What are the rest of them?.. If I'm not mistaking, Informix's ROWID is a SERIAL(INT) which allows for a max. of 2GB nrows, or maybe it uses INT9 for TB's nrows?.. However, I think Oracle uses HEX values for ROWID. Too bad ROWID can't be oftenly used, since a rows ROWID can change. So maybe ROWID is used by the optimizer as a counter? Perhaps, it could be used for implementing the query progress idea I mentioned in my "Begin viewing query results before query completes" question? For some reason, I feel it wouldn't be that difficult to report a query's progress while being processed, perhaps at the expense of some slight overhead, but it would be nice to know ahead of time: A "Google-like" estimate of how many rows meet a query's criteria, display it's progress every 100, 200, 500 or 1,000 rows, give users the ability to cancel it at anytime and start displaying the qualifying rows as they are being put into the current list, while it continues searching?.. This is just one example, perhaps we could think other neat/useful features, the ingridients are more or less there. Perhaps we could fine-tune each query with more granularity than currently available? OLTP queries tend to be mostly static and pre-defined. The "what-if's" are more OLAP, so let's try to add more control and intelligence to it? So, therefore, being able to more precisely control, not "hint-influence" a query is what's needed and therefore it would be necessary to know how the optimizers logic is programmed. We can then have Dynamic SELECT and other statements for specific situations! Maybe even tell IDS to read blocks of indexes nodes at-a-time instead of one-by-one, etc. etc.

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  • ADO.NET Entity Framework: Can I have multiple entity types for the same row.

    - by black_nm
    Hi all, I have a base class Participants inherited by Artist, Author and TextWriter. I have only one table in the data store: Participants { ID, FirstName, LastName, IsArtist, IsAuthor, IsTextWriter, } The idea is to have a class for all the roles that a participant can have. I've managed to create the edmx file but when I try to get an Participant (as Artist) that is also an Author I receive the following error: All objects in the EntitySet 'Participants' must have unique primary keys. However, an instance of type 'Artist' and an instance of type 'Author' both have the same primary key value, 'EntitySet=Participants;ID=1'. Thank you

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  • How do I add a column that displays the number of distinct rows to this query?

    - by Fake Code Monkey Rashid
    Hello good people! I don't know how to ask my question clearly so I'll just show you the money. To start with, here's a sample table: CREATE TABLE sandbox ( id integer NOT NULL, callsign text NOT NULL, this text NOT NULL, that text NOT NULL, "timestamp" timestamp with time zone DEFAULT now() NOT NULL ); CREATE SEQUENCE sandbox_id_seq START WITH 1 INCREMENT BY 1 NO MINVALUE NO MAXVALUE CACHE 1; ALTER SEQUENCE sandbox_id_seq OWNED BY sandbox.id; SELECT pg_catalog.setval('sandbox_id_seq', 14, true); ALTER TABLE sandbox ALTER COLUMN id SET DEFAULT nextval('sandbox_id_seq'::regclass); INSERT INTO sandbox VALUES (1, 'alpha', 'foo', 'qux', '2010-12-29 16:51:09.897579+00'); INSERT INTO sandbox VALUES (2, 'alpha', 'foo', 'qux', '2010-12-29 16:51:36.108867+00'); INSERT INTO sandbox VALUES (3, 'bravo', 'bar', 'quxx', '2010-12-29 16:52:36.370507+00'); INSERT INTO sandbox VALUES (4, 'bravo', 'foo', 'quxx', '2010-12-29 16:52:47.584663+00'); INSERT INTO sandbox VALUES (5, 'charlie', 'foo', 'corge', '2010-12-29 16:53:00.742356+00'); INSERT INTO sandbox VALUES (6, 'delta', 'foo', 'qux', '2010-12-29 16:53:10.884721+00'); INSERT INTO sandbox VALUES (7, 'alpha', 'foo', 'corge', '2010-12-29 16:53:21.242904+00'); INSERT INTO sandbox VALUES (8, 'alpha', 'bar', 'corge', '2010-12-29 16:54:33.318907+00'); INSERT INTO sandbox VALUES (9, 'alpha', 'baz', 'quxx', '2010-12-29 16:54:38.727095+00'); INSERT INTO sandbox VALUES (10, 'alpha', 'bar', 'qux', '2010-12-29 16:54:46.237294+00'); INSERT INTO sandbox VALUES (11, 'alpha', 'baz', 'qux', '2010-12-29 16:54:53.891606+00'); INSERT INTO sandbox VALUES (12, 'alpha', 'baz', 'corge', '2010-12-29 16:55:39.596076+00'); INSERT INTO sandbox VALUES (13, 'alpha', 'baz', 'corge', '2010-12-29 16:55:44.834019+00'); INSERT INTO sandbox VALUES (14, 'alpha', 'foo', 'qux', '2010-12-29 16:55:52.848792+00'); ALTER TABLE ONLY sandbox ADD CONSTRAINT sandbox_pkey PRIMARY KEY (id); Here's the current SQL query I have: SELECT * FROM ( SELECT DISTINCT ON (this, that) id, this, that, timestamp FROM sandbox WHERE callsign = 'alpha' AND CAST(timestamp AS date) = '2010-12-29' ) playground ORDER BY timestamp DESC This is the result it gives me: id this that timestamp ----------------------------------------------------- 14 foo qux 2010-12-29 16:55:52.848792+00 13 baz corge 2010-12-29 16:55:44.834019+00 11 baz qux 2010-12-29 16:54:53.891606+00 10 bar qux 2010-12-29 16:54:46.237294+00 9 baz quxx 2010-12-29 16:54:38.727095+00 8 bar corge 2010-12-29 16:54:33.318907+00 7 foo corge 2010-12-29 16:53:21.242904+00 This is what I want to see: id this that timestamp count ------------------------------------------------------------- 14 foo qux 2010-12-29 16:55:52.848792+00 3 13 baz corge 2010-12-29 16:55:44.834019+00 2 11 baz qux 2010-12-29 16:54:53.891606+00 1 10 bar qux 2010-12-29 16:54:46.237294+00 1 9 baz quxx 2010-12-29 16:54:38.727095+00 1 8 bar corge 2010-12-29 16:54:33.318907+00 1 7 foo corge 2010-12-29 16:53:21.242904+00 1 EDIT: I'm using PostgreSQL 9.0.* (if that helps any).

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  • How can I bind events to strongly typed datasets of different types?

    My application contains several forms which consist of a strongly typed datagridview, a strongly typed bindingsource, and a strongly typed table adapter. I am using some code in each form to update the database whenever the user leaves the current row, shifts focus away from the datagrid or the form, or closes the form. This code is the same in each case, so I want to make a subclass of form, from which all of these forms can inherit. But the strongly typed data objects all inherit from component, which doesn't expose the events I want to bind to or the methods I want to invoke. The only way I can see of gaining access to the events is to use: Type(string Name).GetEvent(string EventName).AddEventHandler(object Target,Delegate Handler) Similarly, I want to call the Update method of the strongly typed table adapter, and am using Type(string Name).GetMethod(String name, Type[] params).Invoke(object target, object[] params). It works ok, but it seems very heavy handed. Is there a better way? Here is my code for the main class: using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows.Forms; using System.Data; using System.Data.SqlClient; using System.ComponentModel; namespace MyApplication { public class AutoSaveDataGridForm: Form { private DataRow PreviousRow; public Component Adapter { private get; set; } private Component dataGridView; public Component DataGridView { private get { return dataGridView; } set { dataGridView = value; Type t = dataGridView.GetType(); t.GetEvent("Leave").AddEventHandler(dataGridView, new EventHandler(DataGridView_Leave)); } } private Component bindingSource; public Component BindingSource { private get { return bindingSource; } set { bindingSource = value; Type t = bindingSource.GetType(); t.GetEvent("PositionChanged").AddEventHandler(bindingSource, new EventHandler(BindingSource_PositionChanged)); } } protected void Save() { if (PreviousRow != null && PreviousRow.RowState != DataRowState.Unchanged) { Type t = Adapter.GetType(); t.GetMethod("Update", new Type[] { typeof(DataRow[]) }).Invoke(Adapter, new object[] { new DataRow[] { PreviousRow } }); } } private void BindingSource_PositionChanged(object sender, EventArgs e) { BindingSource bindingSource = sender as BindingSource; DataRowView CurrentRowView = bindingSource.Current as DataRowView; DataRow CurrentRow = CurrentRowView.Row; if (PreviousRow != null && PreviousRow != CurrentRow) { Save(); } PreviousRow = CurrentRow; } private void InitializeComponent() { this.SuspendLayout(); // // AutoSaveDataGridForm // this.FormClosed += new System.Windows.Forms.FormClosedEventHandler(this.AutoSaveDataGridForm_FormClosed); this.Leave += new System.EventHandler(this.AutoSaveDataGridForm_Leave); this.ResumeLayout(false); } private void DataGridView_Leave(object sender, EventArgs e) { Save(); } private void AutoSaveDataGridForm_FormClosed(object sender, FormClosedEventArgs e) { Save(); } private void AutoSaveDataGridForm_Leave(object sender, EventArgs e) { Save(); } } } And here is a (partial) form which implements it: public partial class FileTypesInherited :AutoSaveDataGridForm { public FileTypesInherited() { InitializeComponent(); } private void FileTypesInherited_Load(object sender, EventArgs e) { // TODO: This line of code loads data into the 'sharedFoldersInformationV2DataSet.tblFileTypes' table. You can move, or remove it, as needed. this.tblFileTypesTableAdapter.Fill(this.sharedFoldersInformationV2DataSet.tblFileTypes); this.BindingSource = tblFileTypesBindingSource; this.Adapter = tblFileTypesTableAdapter; this.DataGridView = tblFileTypesDataGridView; } }

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  • How do I rewrite a plist if its data types are immutable?

    - by dugla
    I am getting comfortable with using plists for initializing my app. I now want to save app state back to the plist used to initialize the app and I find myself stuck. At application startup I ingest the plist into an NSDictionary which is immutable. I now want to update the NSDictionary by replacing old values with new values for existing keys and write to the plist via [NSDictionary writeToFile:atomically]. How do I get around the immutability of NSDictionary? Thanks, Doug

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  • How to mark array value types in PHP (Java)Doc?

    - by Christian Sciberras
    It might be a bit difficult to explain, so I'll give some example code. Note that I'm using NetBeans IDE (latest). class Dummy { public function say(){ } } /** * Builds dummy class and returns it. * @return Dummy The dummy class. */ function say_something(){ return new Dummy(); } $s=say_something(); While developing in netbeans I can invoke auto-complete by hitting ctrl+space after typing "$s-". In the the hint window that follows, there is the item "say()". This is because the javadoc says say_something returns a Dummy and NetBeans parsed Dummy class to know that it has a method called "say()". So far so good. My problem is with arrays. Example code follows: /** * Builds array of 2 dummy classes and returns it. * @return Array The dummy class. (*) */ function say_something2(){ return array(new Dummy(),new Dummy()); } $s=say_something2(); If I try the auto-complete thing again but with "$s[0]-" instead, I don't get the methods fro Dummy class. This is because in the JavaDoc I only said that it is an array, but not the values' type. So the question would be, is there any JavaDoc syntax, cheat, whatever which allows me to tell JavaDoc what type of variables to expect in an array?

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  • Everytime user types , in my text box i want it to become ',' or help me do it using a parameter

    - by MyHeadHurts
    I am using a vb.net textbox to become part of my IN sql statement in my program I tryed to use a parameter and it didn't work here is my code TextBox1.Text = "'Cruises','Caribbean and Mexico','CentralSouth America', 'Europe','Far East','France','Italy','London/UK','Middle East/Africa','South Pacific','Spain/Portugal','USA/Canada'" the default value of my textbox although the user can edit the textbox, but they would need to type the ',' which i would rather them just type , . and my other code is If RadioButtonList1.SelectedValue = "Sales" And CheckBox1.Checked = False Then 'saocmd1.CommandText = "SELECT dbo.B605SaleAsOfAdvancedMaster.SDESCR, dbo.B605SaleAsOfAdvancedMaster.DYYYY, dbo.B605SaleAsOfAdvancedMaster.AsOFSales, dbo.B605SaleAsOfAdvancedMaster.ASOFPAX, dbo.B605SaleAsOfAdvancedMaster.YESales, dbo.B605SaleAsOfAdvancedMaster.YEPAX, dbo.B604SalesAsOfAdvanced.Sales AS CurrentSales, dbo.B604SalesAsOfAdvanced.PAX AS CurrentPAX FROM B604SalesAsOfAdvanced INNER JOIN B605SaleAsOfAdvancedMaster ON dbo.B605SaleAsOfAdvancedMaster.SDESCR = B604SalesAsOfAdvanced.SDESCR WHERE (B605SaleAsOfAdvancedMaster.DYYYY =" & DropDownList1.SelectedValue & ") AND (B604SalesAsOfAdvanced.DYYYY = (DatePart(year, GetDate()) +1)) order by B605SaleAsOfAdvancedMaster.SDESCR" saocmd1.CommandText = "SELECT dbo.B605SaleAsOfAdvancedMaster.SDESCR, dbo.B605SaleAsOfAdvancedMaster.DYYYY, dbo.B605SaleAsOfAdvancedMaster.AsOFSales, dbo.B605SaleAsOfAdvancedMaster.ASOFPAX, dbo.B605SaleAsOfAdvancedMaster.YESales, dbo.B605SaleAsOfAdvancedMaster.YEPAX, dbo.B604SalesAsOfAdvanced.Sales AS CurrentSales, dbo.B604SalesAsOfAdvanced.PAX AS CurrentPAX FROM B604SalesAsOfAdvanced INNER JOIN B605SaleAsOfAdvancedMaster ON dbo.B605SaleAsOfAdvancedMaster.SDESCR = B604SalesAsOfAdvanced.SDESCR WHERE (B605SaleAsOfAdvancedMaster.DYYYY =@Dyyyy) AND (B604SalesAsOfAdvanced.DYYYY = (DatePart(year, GetDate()) +1)) and dbo.B605SaleAsOfAdvancedMaster.SDESCR in ('Cruises','Caribbean and Mexico','CentralSouth America', 'Europe','Far East','France','Italy','London/UK','Middle East/Africa','South Pacific','Spain/Portugal','USA/Canada') order by B605SaleAsOfAdvancedMaster.SDESCR" Label2.Text = "Sales" ElseIf RadioButtonList1.SelectedValue = "NetSales" And CheckBox1.Checked = False Then saocmd1.CommandText = "SELECT dbo.B605SaleAsOfAdvancedMaster.SDESCR, dbo.B605SaleAsOfAdvancedMaster.DYYYY, (ISNULL(dbo.B605SaleAsOfAdvancedMaster.AsOFNET,0) + (ISNULL(dbo.B605SaleAsOfAdvancedMaster.AsOFOther,0))) as AsofSales, dbo.B605SaleAsOfAdvancedMaster.ASOFPAX, (ISNULL(dbo.B605SaleAsOfAdvancedMaster.YENET,0) + (ISNULL(dbo.B605SaleAsOfAdvancedMaster.YEOther,0))) as YESales, dbo.B605SaleAsOfAdvancedMaster.YEPAX, (ISNULL(dbo.B604SalesAsOfAdvanced.netSales,0) + (ISNULL(dbo.B604SalesAsOfAdvanced.OtherSales,0))) as CurrentSales, dbo.B604SalesAsOfAdvanced.PAX AS CurrentPAX FROM B604SalesAsOfAdvanced INNER JOIN B605SaleAsOfAdvancedMaster ON dbo.B605SaleAsOfAdvancedMaster.SDESCR = B604SalesAsOfAdvanced.SDESCR WHERE (B605SaleAsOfAdvancedMaster.DYYYY =@Dyyyy) AND (B604SalesAsOfAdvanced.DYYYY = (DatePart(year, GetDate()) +1)) and dbo.B605SaleAsOfAdvancedMaster.SDESCR in ('Cruises','Caribbean and Mexico','CentralSouth America', 'Europe','Far East','France','Italy','London/UK','Middle East/Africa','South Pacific','Spain/Portugal','USA/Canada') order by B605SaleAsOfAdvancedMaster.SDESCR" Label2.Text = "Net Sales" ElseIf RadioButtonList1.SelectedValue = "INSSales" And CheckBox1.Checked = False Then saocmd1.CommandText = "SELECT dbo.B605SaleAsOfAdvancedMaster.SDESCR, dbo.B605SaleAsOfAdvancedMaster.DYYYY, ISNULL(dbo.B605SaleAsOfAdvancedMaster.AsOFINS,0)as AsofSales, dbo.B605SaleAsOfAdvancedMaster.ASOFPAX, ISNULL(dbo.B605SaleAsOfAdvancedMaster.YEINS,0) as YESales, dbo.B605SaleAsOfAdvancedMaster.YEPAX, ISNULL(dbo.B604SalesAsOfAdvanced.INSSales,0) as CurrentSales, dbo.B604SalesAsOfAdvanced.PAX AS CurrentPAX FROM B604SalesAsOfAdvanced INNER JOIN B605SaleAsOfAdvancedMaster ON dbo.B605SaleAsOfAdvancedMaster.SDESCR = B604SalesAsOfAdvanced.SDESCR WHERE (B605SaleAsOfAdvancedMaster.DYYYY =@Dyyyy) AND (B604SalesAsOfAdvanced.DYYYY = (DatePart(year, GetDate()) +1)) and dbo.B605SaleAsOfAdvancedMaster.SDESCR in ('Cruises','Caribbean and Mexico','CentralSouth America', 'Europe','Far East','France','Italy','London/UK','Middle East/Africa','South Pacific','Spain/Portugal','USA/Canada') order by B605SaleAsOfAdvancedMaster.SDESCR" Label2.Text = "Insurance Sales" ElseIf RadioButtonList1.SelectedValue = "CXSales" And CheckBox1.Checked = False Then saocmd1.CommandText = "SELECT dbo.B605SaleAsOfAdvancedMaster.SDESCR, dbo.B605SaleAsOfAdvancedMaster.DYYYY, ISNULL(dbo.B605SaleAsOfAdvancedMaster.AsOFCX,0)as AsofSales, dbo.B605SaleAsOfAdvancedMaster.ASOFPAX, ISNULL(dbo.B605SaleAsOfAdvancedMaster.YECX,0) as YESales, dbo.B605SaleAsOfAdvancedMaster.YEPAX, ISNULL(dbo.B604SalesAsOfAdvanced.CXSales,0) as CurrentSales, dbo.B604SalesAsOfAdvanced.PAX AS CurrentPAX FROM B604SalesAsOfAdvanced INNER JOIN B605SaleAsOfAdvancedMaster ON dbo.B605SaleAsOfAdvancedMaster.SDESCR = B604SalesAsOfAdvanced.SDESCR WHERE (B605SaleAsOfAdvancedMaster.DYYYY =@Dyyyy) AND (B604SalesAsOfAdvanced.DYYYY = (DatePart(year, GetDate()) +1)) and dbo.B605SaleAsOfAdvancedMaster.SDESCR in ('Cruises','Caribbean and Mexico','CentralSouth America', 'Europe','Far East','France','Italy','London/UK','Middle East/Africa','South Pacific','Spain/Portugal','USA/Canada') order by B605SaleAsOfAdvancedMaster.SDESCR" Label2.Text = "Canceled Sales" ElseIf RadioButtonList1.SelectedValue = "Sales" And CheckBox1.Checked = True Then saocmd1.CommandText = "SELECT dbo.B605SaleAsOfAdvancedMaster.SDESCR, dbo.B605SaleAsOfAdvancedMaster.DYYYY, dbo.B605SaleAsOfAdvancedMaster.AsOFSales, dbo.B605SaleAsOfAdvancedMaster.ASOFPAX, dbo.B605SaleAsOfAdvancedMaster.YESales, dbo.B605SaleAsOfAdvancedMaster.YEPAX, dbo.B604SalesAsOfAdvanced.Sales AS CurrentSales, dbo.B604SalesAsOfAdvanced.PAX AS CurrentPAX FROM B604SalesAsOfAdvanced INNER JOIN B605SaleAsOfAdvancedMaster ON dbo.B605SaleAsOfAdvancedMaster.SDESCR = B604SalesAsOfAdvanced.SDESCR WHERE (B605SaleAsOfAdvancedMaster.DYYYY =@Dyyyy) AND (B604SalesAsOfAdvanced.DYYYY = (DatePart(year, GetDate()) +1)) and dbo.B605SaleAsOfAdvancedMaster.SDESCR in (" & TextBox1.Text & ") order by B605SaleAsOfAdvancedMaster.SDESCR" Label2.Text = "Sales" ElseIf RadioButtonList1.SelectedValue = "NetSales" And CheckBox1.Checked = True Then saocmd1.CommandText = "SELECT dbo.B605SaleAsOfAdvancedMaster.SDESCR, dbo.B605SaleAsOfAdvancedMaster.DYYYY, (ISNULL(dbo.B605SaleAsOfAdvancedMaster.AsOFNET,0) + (ISNULL(dbo.B605SaleAsOfAdvancedMaster.AsOFOther,0))) as AsofSales, dbo.B605SaleAsOfAdvancedMaster.ASOFPAX, (ISNULL(dbo.B605SaleAsOfAdvancedMaster.YENET,0) + (ISNULL(dbo.B605SaleAsOfAdvancedMaster.YEOther,0))) as YESales, dbo.B605SaleAsOfAdvancedMaster.YEPAX, (ISNULL(dbo.B604SalesAsOfAdvanced.netSales,0) + (ISNULL(dbo.B604SalesAsOfAdvanced.OtherSales,0))) as CurrentSales, dbo.B604SalesAsOfAdvanced.PAX AS CurrentPAX FROM B604SalesAsOfAdvanced INNER JOIN B605SaleAsOfAdvancedMaster ON dbo.B605SaleAsOfAdvancedMaster.SDESCR = B604SalesAsOfAdvanced.SDESCR WHERE (B605SaleAsOfAdvancedMaster.DYYYY =@Dyyyy) AND (B604SalesAsOfAdvanced.DYYYY = (DatePart(year, GetDate()) +1)) and dbo.B605SaleAsOfAdvancedMaster.SDESCR in (" & TextBox1.Text & ") order by B605SaleAsOfAdvancedMaster.SDESCR" Label2.Text = "Net Sales" ElseIf RadioButtonList1.SelectedValue = "INSSales" And CheckBox1.Checked = True Then saocmd1.CommandText = "SELECT dbo.B605SaleAsOfAdvancedMaster.SDESCR, dbo.B605SaleAsOfAdvancedMaster.DYYYY, ISNULL(dbo.B605SaleAsOfAdvancedMaster.AsOFINS,0)as AsofSales, dbo.B605SaleAsOfAdvancedMaster.ASOFPAX, ISNULL(dbo.B605SaleAsOfAdvancedMaster.YEINS,0) as YESales, dbo.B605SaleAsOfAdvancedMaster.YEPAX, ISNULL(dbo.B604SalesAsOfAdvanced.INSSales,0) as CurrentSales, dbo.B604SalesAsOfAdvanced.PAX AS CurrentPAX FROM B604SalesAsOfAdvanced INNER JOIN B605SaleAsOfAdvancedMaster ON dbo.B605SaleAsOfAdvancedMaster.SDESCR = B604SalesAsOfAdvanced.SDESCR WHERE (B605SaleAsOfAdvancedMaster.DYYYY =@Dyyyy) AND (B604SalesAsOfAdvanced.DYYYY = (DatePart(year, GetDate()) +1)) and dbo.B605SaleAsOfAdvancedMaster.SDESCR in (" & TextBox1.Text & ") order by B605SaleAsOfAdvancedMaster.SDESCR" Label2.Text = "Insurance Sales" ElseIf RadioButtonList1.SelectedValue = "CXSales" And CheckBox1.Checked = True Then saocmd1.CommandText = "SELECT dbo.B605SaleAsOfAdvancedMaster.SDESCR, dbo.B605SaleAsOfAdvancedMaster.DYYYY, ISNULL(dbo.B605SaleAsOfAdvancedMaster.AsOFCX,0)as AsofSales, dbo.B605SaleAsOfAdvancedMaster.ASOFPAX, ISNULL(dbo.B605SaleAsOfAdvancedMaster.YECX,0) as YESales, dbo.B605SaleAsOfAdvancedMaster.YEPAX, ISNULL(dbo.B604SalesAsOfAdvanced.CXSales,0) as CurrentSales, dbo.B604SalesAsOfAdvanced.PAX AS CurrentPAX FROM B604SalesAsOfAdvanced INNER JOIN B605SaleAsOfAdvancedMaster ON dbo.B605SaleAsOfAdvancedMaster.SDESCR = B604SalesAsOfAdvanced.SDESCR WHERE (B605SaleAsOfAdvancedMaster.DYYYY =@Dyyyy) AND (B604SalesAsOfAdvanced.DYYYY = (DatePart(year, GetDate()) +1)) and dbo.B605SaleAsOfAdvancedMaster.SDESCR in (" & TextBox1.Text & ") order by B605SaleAsOfAdvancedMaster.SDESCR" Label2.Text = "Canceled Sales" End If Basically what is happening is, if a certain radio button is selected and the user didn't click the checkbox the default regions are included and they are hardcoded because the query runs much faster. if the user did click the checkbox then the textbox where they type the specific regions shows up and it will run the query that includes the dbo.B605SaleAsOfAdvancedMaster.SDESCR in (" & TextBox1.Text & ") If you can somehow do this using parameters and not with the textbox1.text in the query it will run much faster for me thanks for your help

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  • How to register file types/extensions with a WiX installer?

    - by OregonGhost
    I didn't find an explicit answer to this question in the WiX Documentation (or Google, for that matter). Of course I could just write the appropriate registry keys in HKCR, but it makes me feel dirty and I'd expect this to be a standard task which should have a nice default solution. For bonus points, I'd like to know how to make it "safe", i.e. don't overwrite existing registrations for the file type and remove the registration on uninstall only if it has been registered during installation and is unchanged.

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  • How to Store data without using Database and how to retrieve them ?

    - by Harikrishna
    I am parsing the html file to extract tabular information through column names. And I want like let user give the input for column name. And according to that column names tabular information will be extracted. Now that column names which user will input,based on that column names I want to find the tabular information from the html file. But where I should store this column names input by user ? And how to retrieve them ? I dont want to use database.

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  • How do I store and retrieve TimeUUIDType types with Net::Cassandra::Easy?

    - by Holden Robbins
    Doing the following: my $c = Net::Cassandra::Easy->new(server => 'localhost', port => '9160', keyspace => 'Keyspace1'); $c->connect(); my $uuid_bin = Data::UUID->new()->create_bin(); eval { $result = $c->mutate([$key], family => 'StandardByUUID1', insertions => { $uuid_bin => '123' }); }; warn $@ if $@; Result is a: Net::GenCassandra::InvalidRequestException I didn't see anything similar to Net::Cassandra::Easy::pack_decimal for UUIDs.

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  • How do I apply css for textboxes only but not for all the <input> types like CheckBoxes, etc.?

    - by George
    If all browsers supported attribute selectors, we could easily do the following: input[type='text'] { font:bold 0.8em 'courier new',courier,monospace; } input[type='radio'] { margin:0 20px; } input[type='checkbox'] { border:2px solid red; But I don't think all IE versions of ^ and greater support this. I think I'd like to avoid skins. Not sure why, other than I tried them and I recall having a negative experience. It was probably my lack of knowledge. Are there any issues in using and CSS, external or otherwise? What's the best way to handle this? Currently I am assigning separate classes to each control type.

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  • Getting PDT code completion to recognise runtime return types from base class?

    - by Keith Humm
    Hi guys, I've got an abstract base class: abstract class BaseClass { /** * @return CLASSNAME */ public function fluent() { // do stuff return $this; } } Generally, i would put BaseClass where CLASSNAME is and all would be fine, PDT would pick up the phpdoc return type and happily autocomplete. Until, that is, I subclass BaseClass and add additional methods, and code compete on an instance of the derived class. PDT will only recognise the methods from BaseClass and not those from the derived class. What I need is something like @return self or @return this. Does PDT have such functionality? Or is there an alternate trick without having to declare these methods in every derived class?

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  • How to instanciate a class when its property members are not of primitive types?

    - by Richard77
    Hello, 1) Let's say I've a class MyDataInfo public class MyDataInfo { public int MyDataInfoID { get; set; } public string Name { get; set; } } For the purpose of the fuctionality I'm after, I've created another class (MyData) whose property members are of MyDataInfo type. 2) Here's myData public class MyData { public MyDataInfo Prop1 { get; set; } public MyDataInfo Prop2 { get; set; } } 3) And, here's my action method public ActionResult MyAction() { MyData myObject = new MyData(); return View(myObject); } 4) Finally, this in my View template (which is strongly typed and inherits from MyData) <% = Html.Encode (Model.Prop1.Name)%> <% = Html.Encode (Model.Prop2.Name)%> Unfortunately, I got an error "Object not set to an instance of an object." Am I missing something or is there a different way of obtaining the same result? Thanks for helping

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  • How does Python differentiate between the different data types?

    - by wrongusername
    Sorry if this is quite noobish to you, but I'm just starting out to learn Python after learning C++ & Java, and I am wondering how in the world I could just declare variables like id = 0 and name = 'John' without any int's or string's in front! I figured out that perhaps it's because there are no ''s in a number, but how would Python figure that out in something like def increase(first, second) instead of something like int increase(int first, int second) in C++?!

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  • null pointer exception at org.hibernate.tuple.AbstractEntityTuplizer.createProxy

    - by saurabh
    I am using hibernate 3.2 with struts 1.2 framework I got this exception when i m trying to load the object I am using this code to load the object public Currentprofile findById(java.lang.String id) { log.debug("getting Currentprofile instance with id: " + id); try { Currentprofile instance = (Currentprofile) getSession().get( "com.hibermappings.Currentprofile", id); return instance; } catch (RuntimeException re) { log.error("get failed", re); throw re; } } my hbm file is this <one-to-one name="referenceDb" lazy="proxy" class="com.hibermappings.ReferenceDb" cascade="all" constrained="false" /> <one-to-one name="registration" lazy="proxy" class="com.hibermappings.Registration" cascade="all" constrained="false" /> <one-to-one name="jobseekerpackagedetails" lazy="proxy" class="com.hibermappings.Jobseekerpackagedetails" cascade="all" constrained="false" /> <property name="keyWords" type="java.lang.String"> <column name="keyWords" length="5000" /> </property> <property name="totalExp" type="java.lang.String"> <column name="totalExp" length="100" /> </property> <property name="hqualification" type="java.lang.String"> <column name="hQualification" length="100" /> </property> <property name="preferedLocation" type="java.lang.String"> <column name="preferedLocation" length="100" /> </property> <property name="functionalArea" type="java.lang.String"> <column name="functionalArea" length="1000" /> </property> <property name="expSalary" type="java.lang.String"> <column name="expSalary" length="100" /> </property> <property name="designation" type="java.lang.String"> <column name="designation" length="100" /> </property> <property name="resumeTitle" type="java.lang.String"> <column name="resumeTitle" length="500" /> </property> <property name="profileDetails" type="java.lang.String"> <column name="profileDetails" length="65535" /> </property> <property name="requiredProfile" type="java.lang.String"> <column name="requiredProfile" length="65535" /> </property> <property name="activatedOn" type="java.util.Date"> <column name="activatedOn" length="0" /> </property> <set name="resumes" inverse="true" cascade="save-update"> <key> <column name="jobseekerId" length="50" /> </key> <one-to-many class="com.hibermappings.Resume" /> </set> </class> the same code runs well when I m using in a simple java class within main method .. full stack trace of exception is java.lang.NullPointerException at org.hibernate.tuple.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:372) at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:3121) at org.hibernate.event.def.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:232) at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:173) at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87) at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862) at org.hibernate.impl.SessionImpl.load(SessionImpl.java:781) at org.hibernate.impl.SessionImpl.load(SessionImpl.java:774) at com.DAOs.CurrentprofileDAO.getLoad(CurrentprofileDAO.java:71) at com.action.JobSekeerManage.viewProfile(JobSekeerManage.java:447) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:270) at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:187) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:431) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:236) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1196) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:414) at javax.servlet.http.HttpServlet.service(HttpServlet.java:689) at javax.servlet.http.HttpServlet.service(HttpServlet.java:802) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at com.filter.HibernateFilter.doFilter(HibernateFilter.java:24) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:825) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:731) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:526) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684) at java.lang.Thread.run(Thread.java:595) Error::null

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  • How to deploy a number of disparate project types?

    - by niteice
    This question is similar to http://stackoverflow.com/questions/1900269/whats-the-best-way-to-deploy-an-executable-process-on-a-web-server. The situation is this: I'm developing a product that needs to be deployed to a web server. It consists of 4 website projects, a background service, a couple of command-line tools, and two assemblies shared by all of these components. Now, I also happen to administer the server that this product will be deployed on. So I'm familiar with everything that may need to be done to perform an update: Copy website files Replace the service binary Install updated components in the GAC Configure IIS Update database schema After some research it seems that, to reduce deployment time and to be able to let the other sysadmins handle deployment, I want to deploy all of these as an MSI, except that I don't know a thing about installers. I know VS can generate web deployment projects, but where do I go from there? Being able to simply click Next a few times on an installer is my goal for deploying updates. It would also be nice to modularize it, so for example, I could distribute the four websites among multiple servers and have everything appear as individual components in the installer, and as one entity in Add/Remove Programs. Is all of this too much to ask in a single package?

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  • How does the iPhone SDK Core Data system store date types to sqlite?

    - by Andrew Arrow
    I used core data to do this: NSManagedObjectContext *m = [self managedObjectContext]; Foo *f = (Foo *)[NSEntityDescription insertNewObjectForEntityForName:@"Foo" inManagedObjectContext:m]; f.created_at = [NSDate date]; [m insertObject:f]; NSError *error; [m save:&error]; Where the created_at field is defined as type "Date" in the xcdatamodel. When I export the sql from the sqlite database it created, created_at is defined as type "timestamp" and the values look like: 290902422.72624 Nine digits before the . and then some fraction. What is this format? It's not epoch time and it's not julianday format. Epoch would be: 1269280338.81213 julianday would be: 2455278.236746875 (notice only 7 digits before the . not 9 like I have) How can I convert a number like 290902422.72624 to epoch time? Thanks!

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  • does mysql stored procedures support data types like array, hash,etc?

    - by Yang
    i am creating a mysql function which takes in a varchar and change it to a int based on a mapping table. select name, convert_to_code(country) from users where sex = 'male' here, the convert_to_code() function takes in a country name (e.g. Japan, Finland..) and change it to country code which is an integer (e.g. 1001, 2310..) based on a mapping table called country_maping like below: country_name (varchar) | country_code (int) Japan | 1001 Finland | 2310 Canada | 8756 currently, the stored function need to select country_code from country_mapping where country_name = country_name and return the query result. is that possible to create a hash data struct in SP to optimize the process so that it will not need to perform the query for each row matches the where clause. thanks in advance!

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  • XNA Class Design with Structs as Properties and issues because they are value types and not referenc

    - by Nate Bross
    I'm wondering how you'd recommend designin a class, given the fact that XNA Framework uses Struct all over the place? For example, a spite class, which may require a Vector2 and a Rectangle (both defined as Struct) to be accessed outside of the class. The issue come in when you try to write code like this: class Item { public Vetor2 Position {get; set;} public Item() { Position = new Vector2(5,5); } } Item i = new Item(); i.Positon.X = 20; // fails with error 'Cannot modify the return value of Item because it is not a variable.' // you must write code like this var pos = i.Position; pos.X++; i.Position = pos; The second option compiles and works, but it is just butt ugly. Is there a better way?

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  • In WPF using a ListView is there an elegant way to auto resize items?

    - by Justin
    I recently wrote, my first, WPF application that has a list of items that are polled from a web-serivce. The items are displayed/data-bound in a ListView via a GridView. A background thread periodically polls the web-serivce and updates the list. If, say, I had three items initially bound to the ListView that simply display a description and the three descriptions where something like: - ProjectA - ProjectB - ProjectC Later a new item is added with a description of 'AReallyReallyLongProjectName', I would end up with a list like: - ProjectA - ProjectB - ProjectC - AReallyR The GridViewColumn would not update it's width and would subsequently cut off any new items that extended the original width. I added this bit of code which forces the column to resize, but it just seems a little hacky. (Just seems weird to set a width just to set it back to nothing to force the resize) if(gridView != null) { foreach(var column in gridView.Columns) { if (double.IsNaN(column.Width) column.Width = column.ActualWidth; column.Width = double.NaN; } } Is there a better, more elegant solution, to accomplish this same thing?

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  • Is there a way to achieve covariance of generic types in C# 3.0?

    - by nullDev
    This has been introduced in C# 4.0, but is there a way to achieve this in c# 3.0? For e.g., consider the following code: class Base { } class Derived1 : Base { } class Derived2 : Base { } class User<T> where T : Base { } class User1 : User<Derived1> { } Now, I would like to have a list of User<T>, in which I can store User<Derived1> as well as User<Derived2>, but the following code fails to compile in C# 3.0: List<User<Base>> users = new List<User<Base>>(); users.Add(new User1()); Any ideas?

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