In this post, I am going to share a demonstration on how to update the table data using a Subquery in the PostgreSQL. This is because PostgreSQL uses the ansi-86 joins syntax in update, MySQL uses the ansi-92 syntax. this is becouse of the conditions you have in the where part. This includes both code snippets embedded in the card text and code that is included as a file attachment. no matter what you write. Writing a proper SQL UPDATE query involving multiple tables in Postgres can be tricky and counterintuitive. Let’s examine the syntax above in greater detail: The table_1 and table_2 are called joined-tables. WARNING: THIS EXAMPLE WOULD UPDATE THE DEFINITION OF VIEW WITH THE NAME CURRENT_INVENTORY WITHOUT REMOVING IT For this reason, we will combine all tables with an inner join clause. This was brilliant from a design perspective as the normal use case. Do you know what the unique indexes are on the tables in question? My purpose here is to update multiple tables in one query. For each row in the table_1, the query find the corresponding row in the table_2 that meet the join condition. Not just one table. Note that other postgres update join answers I found on the internet typically show that the update effect happens only on a single table even though a JOIN is used. check if columns you are using for filtering are indexed. cam_id on compaign most probably should be primary key and. In Postgres, typically people join one column in one table to another column in a different table. > > I was wondering if I could do something similar to this in Postgres and > if yes how? campaign, last_call and sale_authorized are inner joins. check what indexes you have. PostgreSQL INNER JOIN Last update on February 26 2020 08:07:05 (UTC/GMT +8 hours) How to use Inner Join in PostgreSQL? so should other ids on other tables. In the end, your query should probably end up as an update with an inner join in the FROM section. This stems from the fact that when performing an UPDATE, other tables are made available using a FROM clause, instead of the JOIN clause that’s normally used when fetching data from multiple tables in a SELECT statement. On Jan 12, 2008 5:22 PM, Sergei Shelukhin <[hidden email]> wrote: > Hi. All source code included in the card PostgreSQL: How to UPDATE multiple attributes with multiple joins is licensed under the license stated below. The following query will return a result set that is desired from us and will answer the question: As shown in the Venn diagram, we need to matched rows of all tables. If you do not use unique indexes in the join, or some other way to ensure that there is a one to one correspondence, you will … When you want to join additional columns you will need to use aliases (best practice). This is a fundamental help, but I found that most of the beginners always try to find the script for Subquery or Joins. 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