MySQL JOIN two tables query

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I have two tables with these structures:

  1. customers

    • id_customer
    • customer_name
    • customer_email
    • customer_address
  2. orders

    • id_order
    • order_number
    • customer_id
    • order_price
    • payment
    • order_date

I need a query which gives me all "id_customer" from "customers" which are located in table "orders"/"customer_id" WHERE "order_price" > "payment" AND "odrer_date" is minimum 30 days ago

SQL is, at its heart, a way to manipulate sets. You start with a subquery to determine the set of customer_id values match your criteria in the orders table.

                        SELECT DISTINCT customer_id
                          FROM orders
                         WHERE order_price > payment
                           AND order_date <= CURDATE() - INTERVAL 30 DAY

Then you use that subquery to fetch data from your customers table.

    SELECT *
      FROM customers
     WHERE id_customer IN (
                            SELECT DISTINCT customer_id
                              FROM orders
                             WHERE order_price > payment
                               AND order_date <= CURDATE() - INTERVAL 30 DAY
                          ) 

MySQL Join Made Easy For Beginners, Summary: in this tutorial, you will learn various MySQL join clauses in the SELECT statement to query data from two tables. SELECT v.id --- whatever columns you need, v.slug --- from the venues table, v.name FROM venues AS v INNER JOIN venue_terms AS vt1 ON vt1.venue = v.id INNER JOIN venue_terms AS vt2 ON vt2.venue = v.id WHERE (vt1.option = 1 AND vt1.value = 10) AND (vt2.option = 2 AND vt2.value = 4) ; If you have 3 conditions, join thrice.

Try:

Select * from customers c inner join orders o On c. id_cusomer = o.customer_id 
where o.order_price > o.payment and o.order_date = CURDATE() - INTERVAL 30 DAY

How to Join Two Tables in MySQL, Join Multiple Tables The above query will allow you to match the rows from table1 (in any case) to the rows of other two tables. Using LEFT JOIN allows you to join table2 and table3 with table1 (not only table2 with table1 and table3 with table2). MySQL LEFT JOIN clause. Similar to an inner join, a left join also requires a join-predicate. When joining two tables using a left join, the concepts of left and right tables are introduced. The left join selects data starting from the left table. For each row in the left table, the left join compares with every row in the right table.

Use This Query

 Select * from customers c inner join orders o On c. id_cusomer = o.customer_id 
where o.order_price > o.payment and o.order_date = CURDATE() - INTERVAL 30 DAY

SQL Joins, A JOIN clause is used to combine rows from two or more tables, based on a related column between them. Let's look at a selection from the "Orders" table: OrderID� And these queries are outer joins: SELECT columnnamelist FROM table1 LEFT JOIN table2 ON table1.col1=table2.col2 SELECT columnnamelist FROM table1 RIGHT JOIN table2 ON table1.col1=table2.col2. In all three queries, table1 and table2 are the tables to be joined. You can join more than two tables. In both queries, col1 and col2 are the names of the columns being matched to join the tables. The tables are matched based on the data in these columns.

How to join two tables mysql?, SELECT * FROM table1 LEFT JOIN table2 on table1.id = table2.id. You can use multiple tables in your single SQL query. The act of joining in MySQL refers to smashing two or more tables into a single table. You can use JOINS in the SELECT, UPDATE and DELETE statements to join the MySQL tables. We will see an example of the LEFT JOIN also which is different from the simple MySQL JOIN. Using Joins at the Command Prompt. Assume we have two tables tcount_tbl and tutorials_tbl, in TUTORIALS. Now take a look at the examples given below − Example. The following

Using MySQl Joins, You can use multiple tables in your single SQL query. The act of joining in MySQL refers to smashing two or more tables into a single table. You can use JOINS� The table_1 and table_2 are called joined-tables. For each row in the table_1, the query find the corresponding row in the table_2 that meet the join condition. If the corresponding row found, the query returns a row that contains data from both tables.

MySQL INNER JOIN, part of SELECT statements and multiple-table UPDATE and DELETE statements: table_references: escaped_table_reference [,� Here are the different types of the JOINs in SQL: (INNER) JOIN: Returns records that have matching values in both tables; LEFT (OUTER) JOIN: Returns all records from the left table, and the matched records from the right table; RIGHT (OUTER) JOIN: Returns all records from the right table, and the matched records from the left table

Comments
  • Have you tried anything before asking?
  • Yes: SELECT a.id_customer FROM customers a, orders b WHERE a.id_customer=b.customer_id AND STR_TO_DATE(b.order_date, '%d.%m.%Y') < CURDATE() - INTERVAL 30 DAY AND b.payment<b.order_price
  • Please don't use the old join syntax. Also add explanations.