w10schools
Login Register
  • Home
  • Tutorials
    • HTML, CSS
      • HTML, HTML5
      • CSS, CSS3
    • XML
    • JavaScript, AJAX
    • PHP
    • Ruby on Rails
      • Ruby
      • Rails
    • ASP.NET
      • ASP
      • C# .NET
    • Java
      • JSP
    • Databases
      • MySQL
      • MSSQL Server
      • Oracle
    • Web Server
      • Windows
      • Linux
      • Apache
      • IIS
    • Design
      • Dreamweaver
      • Flash
      • Photoshop
      • Fireworks
      • CorelDRAW
      • Illustrator
  • References
    • HTML
      • Bootstrap
    • CSS
      • CSS Selectors
      • Sass
    • JavaScript
    • Mobile Apps
      • Cordova
    • Ruby on Rails
      • Ruby
      • Rails
    • PHP
      • Function
      • Language
      • CodeIgniter
      • Phalcon
      • PHPUnit
      • Symfony
      • Drupal
      • Yii
      • Laravel
    • Perl
      • Perl
    • Python
      • Python
      • Django
      • NumPy
      • Pandas
      • scikit-image
      • scikit-learn
      • Statsmodels
      • Matplotlib
    • Lua
      • Lua
    • C, C++
      • C
      • C++
    • Server
      • Docker
      • Apache HTTP Server
      • Nginx
    • Database
      • PostgreSQL
    • Big Data
      • TensorFlow
    • Game Development
      • Phaser
      • LÖVE
  • Articles
    • News
    • General
      • Website Promotion
      • Online Advertising
      • Make Money Online
    • Editorials
    • Interviews
    • Web Roundups
  • Resources
    • Design
      • Fonts
      • Graphics
      • Vectors
      • Templates
      • UI (User Interface)
      • Brushes
      • Patterns, Backgrounds
      • Textures
    • Web Development
      • HTML, CSS
      • XML
      • JavaScript, AJAX
      • Ruby on Rails
      • PHP
      • Java
      • .NET
      • Python
      • Perl
      • Flash
    • Mobile Application Development
      • Mobile Development Tools
      • Swift
    • Online Services
      • Online Storage
      • Web Hosting
  • Tools
    • Generators
Edit
In Place Editing Advanced Editing
  • References
  • PHP
  • Yii
  • db
  • Query

db\Query exists()

exists() public method

Returns a value indicating whether the query result contains any row of data.

public boolean exists ( $db = null )
$db yii\db\Connection

The database connection used to generate the SQL statement. If this parameter is not given, the db application component will be used.

return boolean

Whether the query result contains any row of data.

Links:
  • http://www.yiiframework.com/doc-2.0/yii-db-query.html#exists()-detail
doc_Yii
doc_Yii
2025-01-10 15:47:30
Comments
Leave a Comment

Please login to continue.

Popular Articles
mongodb\Query exists() exists() public method Returns a value indicating whether the query result contains any row of data. public boolean exists ( $db = null )$db yi
elasticsearch\Query exists() exists() public method Returns a value indicating whether the query result contains any row of data. public boolean exists ( $db = null )$db yi
db_query db_query($query, array $args = array(), array $options = array()) Executes an arbitrary query string against the active database. Use this function f
db\Query $params $params public property List of query parameter values indexed by parameter placeholders. For example, [':name' => 'Dan', ':age' => 31]. p
db\Query $selectOption $selectOption public property Additional option that should be appended to the 'SELECT' keyword. For example, in MySQL, the option 'SQL_CALC_FOUN


Return to View
  • Facebook
  • Tweet
  • Digg it
  • Stumbleupon
  • Delicious
  • Plus Share

Designed by : w10schools

service@w10schools.com

Our Partners: aeeble – Providing content publishing and search solutions