Sep 7, 2012 · Is there a way to store a table inside of a row? what is the most efficient way to do it so I can use SQL query on the rating without processing the data via a PHP code?

Sep 20, 2017 · So you can for instance with PostgreSQL represent "tables in tables" with JSON, AS VALUES ('{"foo":{"bar":1}}'::json); Table "public.foo" Column | Type | Modifiers . myjson | …

You do not want "a table in a table", instead you want to match records from one table with records from another table in a query. You can create a view on top of this query and use the …

This solution is for postgresql. You could use LATERAL JOIN which is available in postgresql. Here is how you could use it in your query. SELECT u.username, c._postCount FROM User u …

Oct 22, 2024 · A nested table in PL/SQL is a dynamic, array-like data structure that allows you to store multiple elements of the same data type in a single variable. Every PL/SQL query …

The CREATE TABLE statement is used to create a new table in a database. .... The column parameters specify the names of the columns of the table. The datatype parameter specifies …

SELECT statement provides an easy way to insert rows into a table from another table. If you want to copy data from one table to another in the same database, use INSERT INTO …

Jan 27, 2014 · The 'Structured' part of SQL denotes the fact that queries can be nested inside each other in such a way that, wherever you can use a table, you can use a table expression. …

Oct 12, 2024 · In this tutorial, we’ll explore using subqueries in SELECT, WHERE, and FROM clauses and show how to handle them when they become repetitive (and redundant). All our …

Aug 29, 2019 · In this article series, we will find basics and common usage scenarios about the inline table-valued functions and we will also be consolidating your learnings with practical …