Answers for "sql queries"

css in sql query

SELECT  'test1' AS [@class]
    , ( SELECT  'test2' as [@class]
        , (SELECT 'Name' FOR XML PATH(''))
        FOR XML PATH('td'), type)
    ,(SELECT  'test3' as [@class]
        , (SELECT 'Value' FOR XML PATH(''))
        FOR XML PATH('td'), type) 
FOR XML PATH('tr'), type

SQL

CREATE TABLE friends (
   id INTEGER,
   name TEXT,
   birthday DATE
);

INSERT INTO friends (id, name, birthday) 
VALUES (1, 'Jane Doe', '1990-05-30');


INSERT INTO friends(id , name , birthday)
VALUES(2 , 'APOORV' , '2000-2-2');



UPDATE friends
SET name = 'Jane Srivastava'
WHERE id = 1;

ALTER TABLE friends 
ADD COLUMN email TEXT; 


UPDATE friends 
SET email =  '203029@klsafjls'
where id  = 1; 

UPDATE friends 
SET email =  '203029@klsafjls'
where id  = 2;

DELETE FROM friends 
WHERE id = 1;


SELECT * 
FROM friends;

all sql commands with examples

DROP DATABASE db_name;

sql query

$meta_query_args = array(
    'relation' => 'OR', // Optional, defaults to "AND"
    array(
        'key'     => '_my_custom_key',
        'value'   => 'Value I am looking for',
        'compare' => '='
    ),
    array(
        'relation' => 'AND',
        array(
            'key'     => '_my_custom_key_2',
            'value'   => 'Value I am looking for 2',
            'compare' => '='
        ),
        array(
            'key'     => '_my_custom_key_3',
            'value'   => 'Value I am looking for 3',
            'compare' => '='
        )
    )
);
$meta_query = new WP_Meta_Query( $meta_query_args );

Database Queries

ALTER TABLE table_name ADD column_name datatype;

SQL

Dont use SQL it sucks