Ledger – debit and credit
Here’s the list Debit Credit Collection x Bill x CN x DN x Refund x
View ArticleUse decimal, not float for money value
Use decimal at it is more accurate for money value in MySQL. e.g. rounding etc. Using float will end up some inaccuracy of calculation.
View ArticleGetting data from CI db query
1. All result set $query = $this->db->query("YOUR QUERY"); if ($query->num_rows() > 0) { foreach ($query->result() as $row) { echo $row->title; echo $row->name;...
View ArticleSample use of CI query builder for CRUD
Sample insert $data = array( 'title' => $title, 'name' => $name, 'date' => $date ); $this->db->insert('mytable', $data); Sample update $this->db->update('mytable', $data, "id =...
View ArticleSome uncommon mysql command
https://dev.mysql.com/doc/refman/5.0/en/comparison-operators.html#function_coalesce COALESCE() IN NOT_IN NOT_LIKE
View ArticleTransparent Data Encryption (TDE)
To secure the data by encryption at data at database level. This will be full done by database application and won’t affect the application level. Almost all popular RDBMS provide this feature but...
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Notes on Azure
Some notes on Microsoft Azure 3 type of services provided App Service – Scalable Web Apps, Mobile Apps, API Apps, and Logic Apps for any device Cloud Service – Highly available, scalable n-tier cloud...
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Check value exist in a table but not in another table
SQL to check a value exist in one table but not in another. SELECT t1.name FROM table1 t1 LEFT JOIN table2 t2 ON t2.name = t1.name WHERE t2.name IS NULL or this (not tested) SELECT * FROM B WHERE NOT...
View ArticleMySQL transaction
Transaction feature suitable to be used in 2 conditions. If you have multiple statements to run and want to ensure all of them run successfully to conclude the task. If you want to run a delete...
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