When to use a meta query in WordPress?

When to use a meta query in WordPress?

meta_query (array) – Contains one or more arrays with the following keys: key (string) – Custom field key. value (string | array) – Custom field value. It can be an array only when compare is ‘IN’, ‘NOT IN’, ‘BETWEEN’, or ‘NOT BETWEEN’.

Is there way to build meta queries with arrays as a meta _ key?

Is there a way to build meta queries with arrays as a meta_key ? If the value in the database is a string and you want to feed the query several values:

Can a relation be cast as an integer in meta _ query?

To fix this, I made a slight tweak to the meta_query by adding a relation and another version of the query that cast the value as an integer instead of a string.

Are there integers in update _ post _ meta?

To go off of Johannes’ response, since it is a serialized array, if you happen to be storing something like user id’s (which was my case), you may need to handle it a little differently. So yes they are integers but through update_post_meta they were being saved as strings.

How to use meta query with custom field?

When you call ‘post__in’ you need to set an array of ids and $unique is an array of posts. @satbir-kira answer works great but it will only search through the meta and post title. If you want it to search through meta, title and content, here is the modified version. Here’s another way, just change the request with the ‘posts_where_request’ filter.

Where to find keywords in a meta query?

Keywords can be found in one or several of the fileds, in any order, it will return any post that has all the keywords in any of the designated fields. You can obiously force the search in a list of meta keys you include in the fonction and get rid of the extra agruments if you want ALL search queries to include these meta keys 🙂

What are the properties of the WP query object?

Properties # Properties 1 $query Holds the query string that was passed to the $wp_query object by WP class. 2 $query_vars An associative array containing the dissected $query: an array of the query variables and their respective values. 3 $queried_object Applicable if the request is a category, author, permalink or Page.

How to use the query-meta-query compare operator?

Like this: $meta_value = ‘%’ . like_escape ( $meta_value ) . ‘%’; – see source. IN and NOT IN select any matches that are in (or not in) the given array. So you could do something like this: and it would get all posts that have the color set to either red, green, or blue.

What does not exists mean in WP query?

NOT EXISTS is just like what it sounds – the meta value isn’t set or is set to a null value. All you need for that query is the key and comparison operator:

When to use the wildcard character in WP query?

Adding the wildcard character % isn’t necessary, because it gets added by default like @Herb said in his below answer. Like this: $meta_value = ‘%’ . like_escape ( $meta_value ) . ‘%’; – see source. IN and NOT IN select any matches that are in (or not in) the given array. So you could do something like this:

How to get post status in WP query?

The WP_Query class method ->query () accepts an any argument for post_status. See wp_get_associated_nav_menu_items () for a proof. The same goes for get_posts () (which is just a wrapper for above call). In most cases you can use get_posts () with ‘any’ parameter for this: But this way you won’t get posts with status trash and auto-draft.

How to define a custom status in WordPress?

A Custom Status is a Post Status you define. Adding a custom status to WordPress is done via the register_post_status() function. This function allows you to define the post status and how it operates within WordPress.

What do you need to know about post meta?

WordPress permits you to store multiple rows of the same post meta for a single post, so you can get an array of data without needing to serialize it and store it in one key. To do this, you need to slightly change how you’re interacting with the post meta api here. Something like this is what you’d want:

How to link meta query to orderby array?

‘orderby’ with multiple ‘meta_key’s. If you wish to order by two different pieces of postmeta (for example, City first and State second), you need to combine and link your meta query to your orderby array using ‘named meta queries’. See the example below:

Is it possible to pass some argument into the WP _ query object?

When run through WP_Query I get this where clause (simplified here for the sake of clarity): Is it possible to pass some argument into the WP_Query object that will change that first AND to an OR?

Why do I have multiple meta keys in SQL?

The problem is SQL sees both meta data types as values in one column and will try to order as such, ignoring the keys. The only solutions I see are either post processing in PHP, or placing event-order values somewhere besides meta_value.

How to access the metadata of a value?

A metadata record can be accessed for a value using the Value.Metadata function. In the following example, the expression in the ComposerRating field accesses the metadata record of the value in the Composer field, and then accesses the Rating field of the metadata record.

What do you mean by metadata in powerquery?

Metadata is information about a value that is associated with a value. Metadata is represented as a record value, called a metadata record. The fields of a metadata record can be used to store the metadata for a value. Every value has a metadata record.

How to check NULL / empty / whitespace values in SQL?

The NULLIF function will convert any column value with only whitespace into a NULL value. Works for T-SQL and SQL Server 2008 & up. While checking null or Empty value for a column, I noticed that there are some support concerns in various Databases.

How to compare strings with trailing spaces in SQL Server?

SQL Server follows the ANSI/ISO SQL-92 specification (Section 8.2, , General rules #3) on how to compare strings with spaces. The ANSI standard requires padding for the character strings used in comparisons so that their lengths match before comparing them.

Can a metadata query find out mappings and sessions?

Re: Metadata query to find out Mappings and Sessions under workflows (Including Worklets) Of course not.

Is there a way to query users in WordPress?

Querying users from the WordPress database works in the same way as querying posts. Now let’s get familiarized with the WP_User_Query class. Its inner workings are again very similar to the WordPress posts query, the WP_Query. This is its basic syntax:

How to search in meta fields in PHP?

All you need is to add the following code in function.php, and whenever you use the ‘s’ argument in a standard WP_Query () function and want it to search in one or several meta fields as well, you simply add a ‘s_meta_keys’ argument that is an array of the meta (s) key (s) you want to search in:

What is the WP _ query object in ACF?

If you are already familiar with the above function, object and filter you may skip this section. The WP_Query object is used to query posts and will return an object containing an array of $post objects and many useful methods.

How to fix my meta _ query code below?

It has several custom fields, named: TITLE, AUTHOR, GENRE, RATING. How do I fix my meta_query code below so that only books that have the search word in the custom fields: title, author, genre WITH EXACTLY the rating specified in my search form, gets displayed in the results?

Can a meta query be merged with an array?

Array merging is not the way to go, especially when the queries are complex and you must be able to add to meta queries in the future. The solution which is simplistically beautiful is to change ‘s’ to one which allows both searching titles and meta fields.

How to use custom SELECT query in WordPress?

The codex has an article Displaying Posts using a Custom Select Query that details how this can be done. 1. WP_Query is not at all a complete ORM but a dedicated class for taking query string variables and filtering posts based on those rules. Thanks for contributing an answer to Stack Overflow!

How to query a custom post type with a custom taxonomy?

You have to use WP_Query to fetch posts what you need. Read documentation for it. In your case the query could be like this:

How to change the where query in WordPress?

In your case, one of the following might be appropriate: posts_search: Lets you change how search queries are interpreted (coming from WordPress built-in/standard search form). Then you’d manually construct your where query as needed from the search query. posts_where: Lets you change the entire where query — for every query, though.

What are date formats and date literals in soql?

Date Formats and Date Literals In a SOQL query you can specify either a particular date or a date literal. A date literal is a fixed expression that represents a relative range of time, such as last month, this week, or next year. In a SOQL query you can specify either a particular date or a date literal.

How is datetime formatted in Salesforce soql?

When a dateTime value is returned in Salesforce, it’s adjusted for the time zone specified in your org preferences. SOQL queries, however, return dateTime field values as UTC values. If you want to process these values in different time zones, your application might need to handle the conversion.

Is it possible to use Meta key and meta value?

Yes. Its possible. Use meta_key and meta_value parameters. meta_key is for custom field key (e.g. location) and meta_value is for custom field value (e.g. berkshire). Thanks for contributing an answer to WordPress Development Stack Exchange!

How to add alternate criteria to a query?

Add the alternate criteria in the or row and if you have more than one use the empty rows below, and click Run. Press CTRL+S to save the query. Another example of the OR criteria: Find employees who work in the Chicago branch office OR employees whose birthday falls on a specific date: 1. The City criterion is specified in the Criteria row.

How to combine the criteria and or rows?

Criteria specified in the Criteria and or rows are combined using the OR operator, as shown below: It is possible to specify more alternatives, by using the empty rows below the or row. Tip: If the criteria are temporary or changes often, a better option is to filter for the query result.

How are rows combined in a Power Query?

When the query runs, rows from the related table ( Order_Details) are combined into rows with the primary table ( Orders ). In Power Query, a column containing a related table has the value Record or Table in the cell. These are called structured columns.

How to combine data from multiple data sources in Excel?

In Data Preview, select the ProductID, ProductName, CategoryID, and QuantityPerUnit columns (use Ctrl+Click or Shift+Click). Select Remove Columns > Remove Other Columns. In this step, you load the Products query into an Excel worksheet. Select Home > Close & Load. The query appears in a new Excel worksheet.

How do I do a Power Query in Excel?

Select Data > Get Data > From File > From Workbook. In the Import Data dialog box, browse for and locate the Products.xlsx file you downloaded, and then select Open. In the Navigator pane, double click the Products table. The Power Query Editor appears.

What’s the best way to write a complex query?

While there is no easy answer, I would suggest the following steps: Think of it as of LEGO bricks and build the query that way. Treat complex parts as black boxes – they will return what they need to and you’ll write (and incorporate into the main query) them later Create all subqueries separately.

Can a meta-variable be used in an application engine?

A meta-variable allows substitution of text within SQL statements. Note. Some meta-SQL elements can be used only in Application Engine programs, some can be used both in Application Engine programs and in other environments, and some cannot be used in Application Engine programs at all.

How does the WP _ query function work in WordPress?

WP_Queryprovides numerous functions for common tasks within The Loop. To begin with, have_posts(), which calls $wp_query->have_posts(), is called to see if there are any posts to show. If there are, a whileloop is begun, using have_posts()as the condition. This will iterate around as long as there are posts to show.

How to find out what type of request WordPress is dealing with?

The first is to find out what type of request WordPress is currently dealing with. The $is_*properties are designed to hold this information: use the Conditional Tagsto interact here. This is the more common scenario to plugin writers (the second normally applies to theme writers).