How To have Dynamic SQL in MySQL Stored Procedure

How To have Dynamic SQL in MySQL Stored Procedure

How do you build and use dynamic sql in a MySQL stored procedure? 1:I don't believe MySQL supports dynamic sql. You can do "prepared" statements which is similar, but different.Here is an example:mysql> PREPARE stmt FROM -> 'select

How to make a query with group_concat in sql server [duplicate]

How to make a query with group_concat in sql server [duplicate]

This question already has an answer here: Simulating group_concat MySQL function in Microsoft SQL Server 2005? 9 answers I know that in sql server we c

Collapse / concatenate / aggregate a column to a single comma separated string within each group

Collapse / concatenate / aggregate a column to a single comma separated string within each group

I want to aggregate one column in a data frame according to two grouping variables, and separate the individual values by a comma.Here is some data:data <- data.frame(A = c(rep(111, 3), rep(222, 3)), B = rep(1:2, 3), C = c(5:10))data# A

angularjs: ng-repeat-start and ng-repeat-end with inner ng-repeat

angularjs: ng-repeat-start and ng-repeat-end with inner ng-repeat

Hi I have a simple use case for ng-repeat-start and end and is working just fine, the problem appears when I want to add an inner ng-repeat.Here is the my code {{e}} {{obj.description}}The inner ng-repeat into td element is not working, I

Finding the hash value of a row in postgresql

Finding the hash value of a row in postgresql

Is there a way to get the hash code of a row in postgresql? I need to export some data only if there is some changes in the data after the last export, the last exported data rows can be stored in a table, the when the again I need to expo

New Google Sheets custom functions sometimes display “Loading…” indefinitely

New Google Sheets custom functions sometimes display “Loading…” indefinitely

SPECIFIC FOR: "NEW" google sheets only.This is a known issue as highlighted by google in the new sheets.Issues: If you write complex* custom functions in google-apps-script for google sheets, you will occasionally run into cells which displ

Django: openpyxl saving workbook as attachment

Django: openpyxl saving workbook as attachment

Hi I have a quick question. I didn't find answer in internet maybe someone of you can help me.So i want to save workbook as attachment but I don't know how lets see an example : from openpyxl import Workbook from openpyxl.cell import

Determine ROW that caused “unexpected end of file” error in BULK INSERT?

Determine ROW that caused “unexpected end of file” error in BULK INSERT?

i am doing a bulk insert:DECLARE @row_terminator CHAR;SET @row_terminator = CHAR(10); -- or char(10)DECLARE @stmt NVARCHAR(2000);SET @stmt = ' BULK INSERT accn_errors FROM ''F:\FullUnzipped\accn_errors_201205080105.txt'' WITH (

Smooth scrolling for WPF DataGrid

Smooth scrolling for WPF DataGrid

I am using WPF datagrid, only modification I have in place is: I have this modification so if the cell contents are longer, they stretch the line height, no text is hidden.Problem is with DataGrid's scrolling beha

Why Object#hashCode() returns int instead of long

Why Object#hashCode() returns int instead of long

why not:public native long hashCode();instead of: public native int hashCode();for higher chance of achieving unique hash codes? 1:Because the maximum length of an array is Integer.MAX_VALUE. Since the prime use of hashCode() is to deter

Adding an index on a boolean field

Adding an index on a boolean field

I have a Rails model with a boolean field that I search on (I use a scope that finds all instances where the field is set to true). I'm using Postgres.My instinct is to add an index on the boolean field. Is that good practice, or is there s

Python, how to pass an argument to a function pointer parameter?

Python, how to pass an argument to a function pointer parameter?

I only just started learning Python and found out that I can pass a function as the parameter of another function. Now if I call foo(bar()) it will not pass as a function pointer but the return value of the used function. Calling foo(bar) w

Razor - HTML.RAW does not output text

Razor - HTML.RAW does not output text

I have tried all solution proposed to other, similar questions but none of them seems to work.In essence I am trying to display a table filled with data from collection of models. That in itself is not a problem, however I would like to for

What does the random string after a WebKitFormBoundary do \\ mean?

What does the random string after a WebKitFormBoundary do \\ mean?

I'm trying to use a BI tool to automate a process which extracts data from our DB system, and then upload it to a web site via HTTP POST.The BI Tool I'm using allows me to build the Request up as a text object which it will then send to the

Multiple Custom Rows UITableView?

Multiple Custom Rows UITableView?

I've been searching a lot but didn't find anything useful related to multiple custom rows, I need to create a settings tableView for my app,in which I need to load the rows from xib files,like:ROW 1 =>> XIB 1.ROW 2 =>> XIB 2.ROW 3 =>> XIB 3

ASP.NET MVC4 dynamic form generation

ASP.NET MVC4 dynamic form generation

I am new to ASP.NET MVC and need some help. I have a need to create a form where the form is dynamically created. For example let's say I have a model named Person. The Person has a first and last name. In the form I want to allow the u

Auto adjust the UITableViewCell height depending on its contents

Auto adjust the UITableViewCell height depending on its contents

I want to adjust the height of a cell depending on its contents. I know UITableViewDelegate lets you implement the - (CGFloat) tableView: (UITableView *) tableView heightForRowAtIndexPath: (NSIndexPath *) indexPath { return

Is primefaces live scrolling compatible with Lazy loading

Is primefaces live scrolling compatible with Lazy loading

I have a datatable where huge data sets need to be displayed.So i decided to go with primefaces live scrolling.I also got to know that to improve datatable performance with huge data sets we need to implement lazy loading.With reference to

Using WrapPanel and ScrollViewer to give a multi-column Listbox in WPF

Using WrapPanel and ScrollViewer to give a multi-column Listbox in WPF

I’m making a simple LOB app which loads data from an XML file and displays it in a list with a few buttons for editing.In my first attempt, everything was ok except that the list scrolled downwards in one long column. I would prefer the dat

Efficient multiclass weighted majority voting implementation in MATLAB

Efficient multiclass weighted majority voting implementation in MATLAB

For a few days I was wondering on how to efficiently implement weighted majority voting of m experts in matlab. Here is an example of what I want. Suppose we have 3 experts with weights vectorw=[7 2 6]Suppose they are voting n times on the

How I separate logic from presentation?

How I separate logic from presentation?

Normally I am developing website and coding PHP and HTML something like this - while (mysqli_stmt_fetch($stmt)) { // Create Table Body $html .= "\n"; $html .= " $title\n"; $html .= " $date";

Google Script: Conditionally copy rows from one sheet to another in the same spreadsheet

Google Script: Conditionally copy rows from one sheet to another in the same spreadsheet

I read Google Script: Conditionally copy rows from one spreadsheet to another and could not make it work for me.I need a script that will allow me to do the quoted text below. Please feel free to edit my spreadsheet to make a complete work

Multiple NULL values in column with UNIQUE index [duplicate]

Multiple NULL values in column with UNIQUE index [duplicate]

This question already has an answer here: How to create a unique index on a NULL column? 4 answers We have a table that has a unique index on a column

IF NOT EXISTS in trigger

IF NOT EXISTS in trigger

I have tow tables concept_access and concept_access_log. I want to create a trigger that works every time something is deleted from concept_access, check if there is similar record in log table and if not, inserts new one before it is delet

Tkinter: Treeview widget

Tkinter: Treeview widget

At the moment I am working on a program that has its own project files and inside that are like sub-files and I want to know how to use the treeview widget to display all the sub-files inside the project file, Any Ideas?Thanks in advance!