Wp do sql query from function

wp do sql query from function <?php // 1st Method – Declaring $wpdb as global and using it to execute an SQL query statement that returns a PHP object global $wpdb; $results = $wpdb->get_results( “SELECT * FROM {$wpdb->prefix}options WHERE option_id = 1”, OBJECT ); wp do sql query from function <?php // 2nd Method – […]

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Where clause in sql

w3schools sql in operator SELECT column_name(s) FROM table_name WHERE column_name IN (SELECT STATEMENT); where clause in sql Where clause basically returns only true conditions Select First_Name From Customers Where ID = 1905Cimbom; SQL SELECT WHERE SELECT column1, column2, … FROM table_name WHERE condition; SQL Where Mit WHERE filtert man nach Zeilen aus einer Tabelle, die […]

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What is foreign key in sql

what is foreign key in sql Foreign Key: It is a column that comes from a different table and using Foreign key tables are related each other It is the primary key of another table It can be duplicate or null for another table sql foreign key # A foreign key is essentially a reference […]

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Use join in mysqli

mysql join query SELECT m.member_id, m.name member, c.committee_id, c.name committee FROM members m INNER JOIN committees c ON c.name = m.name; use join in mysqli <?php $dbhost = ‘localhost:3306’; $dbuser = ‘root’; $dbpass = ”; $dbname = ‘TUTORIALS’; $conn = mysqli_connect($dbhost, $dbuser, $dbpass,$dbname); if(! $conn ) { die(‘Could not connect: ‘ . mysqli_error()); } echo […]

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Truncate table sqlite

truncate table sqlite The TRUNCATE TABLE statement is used to remove all records from a table. SQLite does not have an explicit TRUNCATE TABLE command like other databases. Instead, it has added a TRUNCATE optimizer to the DELETE statement. To truncate a table in SQLite, you just need to execute a DELETE statement without a […]

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