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SQL 2021-10-15 01:57:11
sql missing records from another table
-- Returns missing my_table1 ID in my_table2 SELECT DISTINCT t1.* FROM my_table t1 LEFT OUTER JOIN my_table2 t2 ON t1.ID = t2.ID WHERE t2.ID is null; -- Or: SELECT t1.* FROM my_table1 t1 WHERE NOT EXISTS (SELECT ID FROM my_table2 t2 WHERE t2.ID = t1.... Add solution -
PHP 2021-10-11 16:25:08
auto check a category when creating new post
add_filter('wp_terms_checklist_args', 'WPSE_pre_select_categories', 10, 2); function WPSE_pre_select_categories($args, $post_id) { $post = get_post($post_id); // only pre select categories for new posts if ($post->post_status !... Add solution -
C# 2021-10-11 09:31:05
how to create an empty object in c#
I don't thing there is a conventional way to do what you're asking for as the default type for classes is null. However, you can use reflection to recursively loop through the properties, looking for public properties with parameter-less constructors and ... Add solution -
CSS 2021-10-08 21:37:07
double question mark in js
//Similar to || but only returns the right-hand operand if the left-hand is null or undefined 0 ?? "other" // 0 false ?? "other" // false null ?? "other" // "other" undefined ?? "other" // "other" Add solution