What are Azure functions? Example of Invoking Azure functions inside the Logic App. Azure Functions In General, functions are used to run the small pieces of code to make it reusable. Similarly, Azure functions are used to run the small [...]
Customized multiple row selections in Devextreme Datagrid with dxRadiogroup as a Custom Column Field I am using Devextreme jquery datagrid with paging options implemented that involves setting permissions for user. The target here is to update the datasource and dxRadiogroup [...]
ERROR: type "citext" does not exist (on PostgreSQL 9.3.15) While creating a table (email_notifications), we were facing this error type "citext" does not exist. The syntax of creating table and the error is shown in the screenshot below : Then [...]
Resolved Issue “Invalid value for header \u0067x-ms-request-id\u0067. The header must contain a single valid GUID” I was facing the issue “Invalid value for header \u0067x-ms-request-id\u0067. The header must contain a single valid GUID” while making request to the Azure Database [...]
Resolved Issue “Invalid value for header \u0067x-ms-request-id\u0067. The header must contain a single valid GUID” I was facing the issue “Invalid value for header \u0067x-ms-request-id\u0067. The header must contain a single valid GUID” while making request to the Azure Database [...]
Sending email with or without Attachment using Amazon SES service First download the aws library using the this link: http://docs.aws.amazon.com/aws-sdk-php/v3/download/aws.zip link and save it in project. Now the usage of library is below where we write the code to send [...]
How to fix PostgreSQL server doesn’t listen error While trying to connect to Postgress you may face this error - Server doesn’t listen. Error: This is not an error exactly but an exception that occurs when we are running two [...]
Tips to improve SQL query performance 1. Avoid usage of multiple joins in a single query. Unnecessary joins degrade your query performance. 2. Creation of indexes on the table. Indexes are used for improving your queries. We need to create [...]
There is a lot of discussion on internet about whether to have DAOs or not with JPA and service layer or with session beans (which is the service layer). My personal opinion is more favored towards DAO layer and some [...]
MySql Communication link failure while connecting MySql server remotely I'm getting the following error when I tried to connect MySql server remotely: ERROR: ------------------------------------------ Cannot connect to database server Communications link failure The last packet sent successfully to the server [...]
Sometimes, we want to show only those columns which have specific value. Let’s assume we have following table : In the above table, value of 1 in a column represents that corresponding service is provided by organization and 0 represents [...]
SQL transaction in Cakephp 3 is a series of statements working in a logical order to handle database errors and ensure data integrity. There are four main methods being used in Sql transaction in Cakephp 3. 1. Initialize the statement [...]
Azure provides various rest apis to perform different actions and operations that are possible in the azure server like to create web applications, databases and many more. User can design their own simplified UI to perform actions, instead of logging [...]
Suppose we have two tables : articles and article_comments CREATE TABLE articles( `id` INT( 11 ) NOT NULL AUTO_INCREMENT , `title` VARCHAR( 200 ) NOT NULL , `content` VARCHAR( 500 ) NOT NULL , `author_name` VARCHAR( 20 ) DEFAULT 1 [...]
Sometimes requirement arises to display a field value as column name in output and adjacent values in the same row below it as its values. Suppose I have a table “students” with marks of each student in different subjects. Each [...]
Create and Download CSV of table Records using OUTFILE Sql command and PHP 1. Create temporary CSV file using OUTFILE SQL command: OUTFILE command is used to write your sql command output to the specified location. You can write the output [...]
SQL Report in ‘Configurable Reports’ plugin provides us an easy UI to write SQL Query and draw results immediately without involving any code complications. Suppose I want to generate my custom grades report based on some specific activities from course [...]
‘Like’ operator of SQL can be used in the following ways in Moodle: Using expression $DB->sql_like: $grade_item_test = $DB->get_records_sql ( 'SELECT * FROM {grade_items} WHERE '.$DB->sql_like('idnumber', ':idnum').' AND courseid=:cid order by itemmodule', array ('idnum'=>'test','cid'=> $courseid) ); Using like operator: $grade_item_test [...]
JSONB (JSON Blob) datatype in Postgres is used to save JSON data. We can search on JSONB type of column after creating an index on it. For example: Usage in PostgreSQL: 1. Create table and index CREATE TABLE tests ( [...]
MySQL access Denied for user while Username and password is correct. I got this error when I named one of my table columns as “order” which is also a mysql keyword. When tried to rename it, I got the following [...]