Meta query and compare “!=” not working as expected

I’ve found the solution (I suppose): looks like that the right operator in this case is “NOT EXISTS”. I’ve noticed that in the db postmeta table I’ve got only the records of the “is_hidden” key with value “on”…

Related Posts:

  1. Comparing timestamps in meta query doesn’t work
  2. Display two post types ordered by two custom fields
  3. Custom Query: If One Post Object Field Value Is The Same As Another
  4. Using OR relation in meta_query to check for a value before sorting by another
  5. Get Posts ordered by a date custom meta field
  6. Using meta_query, how can i filter by a custom field and order by another one?
  7. meta_query for keys that aren’t yet set
  8. WP_Query orderby custom field then post_date in one query
  9. Query custom post type by custom field
  10. Filtering a WP_Query meta_query by numeric values isn’t working
  11. Querying custom post type with 2 custom fields (date-range)
  12. Custom Queries: Joining On Meta Values From Two Custom Post Types
  13. How Can I save multiple records in same meta key?
  14. order by meta_value serialized array
  15. WP insert post PHP function dynamically generated Custom Fields
  16. How loop through posts based on custom fields
  17. Having trouble with custom date field for CPT query (WordPress)
  18. Display custom post types with custom date field value (before today) & order by custom date field
  19. Sort posts based on multiple custom fields
  20. Conditional to modify query results
  21. Filtering by Post Meta Custom Fields – Performance
  22. Ignore sticky posts if post is not in meta query
  23. query posts and custom post type with meta key
  24. meta_query compare >= not working but
  25. WP_Query: include custom post type only with specific meta value
  26. Returning a list of custom post types excluding those without a specific meta_value
  27. Two near-identical custom field types – one works, the other doesn’t . What can cause this?
  28. wp_query check if integer exists in custom field’s array
  29. Filtering custom post type on a combination of custom taxonomies and custom fields?
  30. Meta query for custom post type ignored in main query
  31. Querying Two Custom Post Types with OR Not Working
  32. Meta Query Not Returning Output Despite Having Matching Values
  33. Meta Query Filtering not working on Custom Meta Box using Radio Buttons
  34. First custom field value (out of several) displayed twice after query
  35. Meta Query posts not showing on ending date of custom field
  36. Admin Custom Meta Box – Pull Last 5 Posts from Custom Post Type
  37. How to Output which matched meta_keys were found from custom_type_posts?
  38. Possible to filter custom post type with multiple meta data?
  39. filter search custom field query
  40. How to let users choose where to search for posts?
  41. Query based on custom fields start and end date
  42. Getting a custom post’s custom field based on another custom post’s custom field select
  43. How to conditionally add Custom Post Type to Front Page
  44. Display a post from custom post type only if all the selected taxonomies and custom field value matches the record
  45. Filtering custom posts by custom fields (ACF) [closed]
  46. order the meta query results by 2 custom fields
  47. WP Query from two Custom Post type fields as statement
  48. Unable to gather Image URL from Custom Post Type’s; Custom Meta Field
  49. Orderby if between two meta fields
  50. Show posts from WP Custom Post Type selected from a field in a metabox
  51. How do I query with multiple custom fields orderby in same column?
  52. meta query multiple values for the same key
  53. Sort custom post archives by a meta value from a different custom post type?
  54. Custom post types – meta_query: search lesson which starts sooner
  55. post type => ‘any’ not applied my custom queries
  56. Meta_Query refuses to return results
  57. Sort loop by custom field from different post type
  58. Meta_query by date for Events archive
  59. How do I display specific custom posts, and how do I edit a post’s singular page?
  60. Query events post type after current date and timezone
  61. Show first posts with custom field not empty and order all by title
  62. Conditional posts in WP_query for search
  63. meta query always fails even if data is correct
  64. Selecting posts older than the current Unix epoch timestamp
  65. Unable to get the upcoming events for custom post
  66. Filter CPT based on meta box value using Flexible Posts widget?
  67. WP_Query arguments: Loop through custom post type – get all entries except excluded meta_key?
  68. loop through custom post-type with two meta_keys
  69. Querying meta values within an array
  70. How to grab data (titles, thumbnails and custom fields) from multiple posts to populate a new array efficiently?
  71. Custom Post Type + Custom Meta Query Not Showing 2012 Posts
  72. Filter Custom post type by another Custom post type
  73. Check for custom field value in different post type than current one and do something
  74. Function to Compare CPT Post Custom Value with Default Posts CF Value
  75. Custom Post Types: How-to get rid of editor (-meta box)
  76. Possible to turn off autosave for single custom post type
  77. manage posts custom column is not populating data from meta boxes
  78. Create child page within custom post type
  79. Add custom field to media attachment image attribute in post editor
  80. set and unset the custom field value
  81. Inserting data into `post meta` table?
  82. Before Delete Post
  83. WP_Query that filters based on custom relationship field
  84. Why do I lose the content of meta boxes when I leave the page?
  85. Custom post type content using custom fields without template
  86. Plugin – Combine Meta Box Input Fields into single saveble record
  87. How to render a custom post type template with custom fields using shortcode
  88. Get Posts by multiple custom fields is not working
  89. Enable Custom Fields For Custom Post Type When CPT Created Using Plugin
  90. Display custom post type for specific user
  91. Function to limit number of custom post types on homepage – TwentyTen
  92. How to prevent meta data from being edited in a post?
  93. Add custom post type to query
  94. Ordering Post by Meta Key (Not Working)
  95. Error when moving custom post type to bin
  96. Enforce all custom posts have specific custom fields
  97. How would I get a list of posts from a custom post type
  98. Customizing the display of custom post types
  99. Display custom posts in checkbox list
  100. Order Wp Query by earliest of 3 dates meta query