What database does Drupal 7 use?
MySQL
Drupal 7 supports MySQL 5.0. 15/MySQL 5.1.
What is Db_select?
function db_select Returns a new SelectQuery object for the active database.
What is database API in Drupal?
Drupal’s database abstraction layer provides a unified database query API that can query different underlying databases. It is built upon PHP’s PDO (PHP Data Objects) database API, and inherits much of its syntax and semantics.
What is Db_query?
function db_query Executes an arbitrary query string against the active database. Use this function for SELECT queries if it is just a simple query string. If the caller or other modules need to change the query, use db_select() instead.
What does Drupal use for a database?
Drupal 8 requires PostgreSQL 9.1. 2 or higher.
How do I change database settings in Drupal?
Change the Database Connection in Drupal’s Settings. php
- Step #1. Locate the settings. php file.
- Step #2. CHMOD the parent directory then the file to be writable. CHMOD the “default” directory to 755.
- Step #3. Download the original settings.
- Step #4. Open the settings.
- Step #5. Change the array to point to your database.
What is dynamic querying?
Dynamic queries refer to queries that are built dynamically by Drupal rather than provided as an explicit query string. All Insert, Update, Delete, and Merge queries must be dynamic. Select queries may be either static or dynamic. Therefore, “dynamic query” generally refers to a dynamic Select query.
What is a dynamic query access?
A dynamic query is automatically refreshed each time it is used. When you use a dynamic query, the program searches the database for any new records meeting the criteria you specify and adds them to the results. Use dynamic queries whenever you need the query to remain current (automatically refresh).
What is database APIs?
DB-API is an acronym for DataBase Application Programming Interface and a library that lets Python connect to the database server. Depending on the relational DB library you use, they may have their own DB-API modules. Simply put, databases are the same, they interact using client-server interaction over a network.
What is Drupal good for?
Drupal is content management software. It’s used to make many of the websites and applications you use every day. Drupal has great standard features, like easy content authoring, reliable performance, and excellent security. But what sets it apart is its flexibility; modularity is one of its core principles.
When to use DB _ select ( ) in Drupal?
Use this function for SELECT queries if it is just a simple query string. If the caller or other modules need to change the query, use db_select () instead. Do not use this function for INSERT, UPDATE, or DELETE queries.
How to retrieve number of records from Drupal database?
Example from «Pro Drupal 7 development book (3rd edition)»: If all you need from the database is a single value, you can use the ->fetchField () method to retrieve that value. Here is an example of retrieving the total number of records from the joke table: This is new in Drupal 7.
Is there a PDOStatement object in Drupal 7?
A PDOStatement object is not that far off from what is returned from: db_query() And drupal has used some of those functions (e.g. PDOStatment::fetchObject ()), as well as added some new ones, to the Database API. Here are some quick examples (borrowed from the Database API documentation) Please note that the above Drupal 7 example is incomplete.
What does db _ QUERY preserve case in Drupal?
Now db_query will preserve case, Code will be Code. The target option is typically either “default” or “slave”, indicating to use a slave SQL server if one is available. Make sure your db settings in settings.php file contains the other database (other_db).
