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Is there an alternative to LEFT JOIN in custom tables with WordPress?


Is there an alternative to LEFT JOIN in custom tables with WordPress?

By : OnlineWarriors
Date : November 22 2020, 10:40 AM
this one helps. UPDATED v.2
I've changed the query to reflect change in LEFT JOIN order and also to show object { ptitle, array( null ) } situation - data you needed is in the column new_col:
code :
select 
    p.title as ptitle, 
    CONCAT('object { ', p.title, ', array( ', IFNULL(GROUP_CONCAT(CONCAT('array(', e.id, ' | ', e.title, ' | ', e.source, ' | ', e.etc, ')') SEPARATOR ', '), 'null'), ' ) }') AS new_col
FROM 
    table1 AS p
    LEFT JOIN table2 AS e  
        ON p.id = e.table1_id 
where 
    p.id = 1
GROUP BY 
    p.title


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How can I join two tables that should be only one in a query without using auxiliary tables? (left join using two column

How can I join two tables that should be only one in a query without using auxiliary tables? (left join using two column


By : longb huynh
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Use the survey table to "drive" the query. That is, make it the first table and use left outer joins.
code :
SELECT s.ID_USER, COUNT(DISTINCT ss.ID_SENT), COUNT(DISTINCT sa.ID_RECEIVED)
FROM Survey s left outer join
     SurveySent ss
     on s.id_survey = ss.id_survey left outer join
     SurveyAnswered sa
     on s.id_survey = sa.id_survey and ss.id_user = sa.id_user
WHERE B.SURVEY_TYPE = @MyType;
How to do a Oracle SQL Left Outer Join on 3 tables with two left tables?

How to do a Oracle SQL Left Outer Join on 3 tables with two left tables?


By : Thananjeyan
Date : March 29 2020, 07:55 AM
Hope this helps Based on your example query, you want the results to contain all the columns from all three tables. Furthermore table_r and table_n seem to be unrelated, but I suppose you don't want a cross product of their rows. This is a rather strange scenario, but you should be able to achieve it like this:
code :
SELECT *
FROM
  table_r
  FULL OUTER JOIN table_n
    ON 1 = 0
  LEFT JOIN table_t
    ON unique_r = unique_t OR unique_n = unique_t
SELECT *
FROM
  (
    SELECT *
    FROM table_r
      LEFT JOIN (
        SELECT *
        FROM table_n
        WHERE unique_n IS NULL
      )

    UNION ALL

    SELECT * FROM (
        SELECT *
        FROM table_r
        WHERE unique_r IS NULL
      )
      RIGHT JOIN table_n
  )
  LEFT JOIN table_t
    ON unique_r = unique_t OR unique_n = unique_t
Full Outer Join (left join union right join) MySQL multiple tables

Full Outer Join (left join union right join) MySQL multiple tables


By : user3793895
Date : March 29 2020, 07:55 AM
around this issue Just have a look at Below query, Hope this may help you! Later you can Modify Accordingly
This will join to all 5 tables. Here I kept Location as the Left Table so that All locations will be Displaying after firing this query and matching Id's will be matched to this table.
code :
SELECT * FROM location LEFT JOIN location_type ON location_type.type_id=location.loc_id
    LEFT JOIN hours ON location.loc_id=hours.loc_id 
    LEFT JOIN holiday ON holiday.loc_id=location.loc_id 
    LEFT JOIN holiday_hours ON holiday.hol_id=holiday_hours.holiday_id
How to LEFT JOIN the wp_terms, wp_term_relationships, wp_term_taxonomy and wp_termmeta tables in WordPress?

How to LEFT JOIN the wp_terms, wp_term_relationships, wp_term_taxonomy and wp_termmeta tables in WordPress?


By : Sharon Leo
Date : March 29 2020, 07:55 AM
fixed the issue. Will look into that further For reporting purposes and to flatten the data I want to join all the WordPress tables that contain information related to terms. , What I did was just fix your query. Check if this is what you need.
code :
SELECT wp_terms.term_id, wp_terms.name, wp_term_relationships.object_id, wp_term_relationships.term_taxonomy_id, wp_term_taxonomy.term_id, wp_term_taxonomy.taxonomy, wp_term_taxonomy.description, wp_term_taxonomy.parent, wp_termmeta.term_id, wp_termmeta.meta_key, wp_termmeta.meta_value
FROM wp_terms
LEFT JOIN wp_term_relationships ON wp_terms.term_id = wp_term_relationships.term_taxonomy_id
LEFT JOIN wp_term_taxonomy ON wp_term_taxonomy.term_taxonomy_id = wp_term_relationships.term_taxonomy_id
LEFT JOIN wp_termmeta on wp_termmeta.term_id = wp_terms.term_id
Wordpress query adds INNER/LEFT JOIN. Why or how to remove/prevent INNER/LEFT JOIN?

Wordpress query adds INNER/LEFT JOIN. Why or how to remove/prevent INNER/LEFT JOIN?


By : A.ghorbani
Date : March 29 2020, 07:55 AM
help you fix your problem everyone for the input, but it turned out that there was nothing wrong with my coding, apparently there was some other plugin wich sended a GET parameter when I sended the filter parameters, this was returning FALSE when this parameter was set, I fixed it by adding !EMPTY in that plugin, after that it worked like a charm.
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