SQL - How do I select rows from one table depending on data from two other tables?

how to retrieve data from two tables with one sql statement
sql merge two tables with different fields
sql merge two tables with same columns
sql select from multiple tables without join
how to retrieve data from multiple tables in sql
sql join 3 tables
combine two tables sql
sql join multiple tables with conditions

I have an SQL question. It's a simple problem, but I'm not an SQL guy at all.

Here is the situation, I have three tables:

CUSTOMER(
    PK(customer_id)
)

LOAN(
    PK(loan_id),
    customer_it,
    behavior_id
)

BEHAVIOR(
    PK(behavior_id),
    unpaid_number
)

// PK(x): x is a primary key.

I would like to select all of the CUSTOMERs who have an unpaid_number >= 1.

Can anybody show me a way to work this around?

Thanks


Use inner join

SELECT c.* FROM CUSTOMER c INNER JOIN LOAN l ON l.customer_id = c.Customer_id INNER JOIN BEHAVIOR b ON b.behavior_id = l.behavior_id WHERE unpaid_number >=1

How do I combine results from several SQL tables, How do you combine results from more than one SQL table? Data in relational database tables are organized into rows and columns. the other 10, the result may contain anywhere from 0 to 50 rows depending on the join condition. Unions​. An UNION is used to combine the rows of two or more queries into one result. Introduction to SQL SELECT statement. To query data from a table, you use the SQL SELECT statement. The SELECT statement contains the syntax for selecting columns, selecting rows, grouping data, joining tables, and performing simple calculations. The SELECT statement is one of the most complex commands in SQL, therefore, in this tutorial, we


You are looking for INNER JOIN. Use like:

SELECT * FROM CUSTOMER c
INNER JOIN LOAN l ON c.customer_id = l.customer_it
INNER JOIN BEHAVIOR b ON b.behavior_id = l.behavior_id
WHERE b.unpaid_number>=1

Table Joins, Joins allow you to link data from two or more tables together into a single in a SQL SELECT statement if it has more than one table after the FROM keyword. Everytime a new row is inserted into the table, all columns will be be updated,  The SQL SELECT statement is made up of several clauses: SELECT: specifies which columns in database tables to include in the result or result set. FROM: specifies the tables that you want to query data from. You can also use the FROM clause to join multiple tables. WHERE: filters unwanted records or rows in the result.


Actually, if you want all customers, you presumably want one row per customer, regardless of the number of matching rows in behavior.

That would suggest using exists or in:

select c.*
from customer c
where exists (select 1
              from loan l join
                   behavior b
                   on b.behavior_id = l.behavior_id
              where b.unpaid_number >= 1 and
                    l.customer_id = c.customer_id
             );

This is particularly important if you are considering using select distinct.

SQL INSERT INTO SELECT Statement, The INSERT INTO SELECT statement copies data from one table and inserts it into another table. and target tables match; The existing records in the target table are unaffected Copy only some columns from one table into another table​:. How do I select data from a table which matches some rows in another table in MySQL? What are you trying match the rows by? Are you trying to match it based upon 2 or 3 columns? or all columns?


Please, try below code

SELECT c.*
FROM CUSTOMER c
INNER JOIN LOAN l
    ON l.customer_id = c.Customer_id
INNER JOIN BEHAVIOR b
    ON b.behavior_id = l.behavior_id
WHERE  unpaid_number >=1

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:  It is important to note that joins can return more rows than exist in either table combined. The joins return combinations of matches. If you join two tables, on containing 5 row, and the other 10, the result may contain anywhere from 0 to 50 rows depending on the join condition.


try this?

SELECT LOAN.customer_it FROM LOAN
WHERE LOAN.behavior_id IN
    (SELECT BEHAVIOR.behavior_id
    from BEHAVIOR where BEHAVIOR.unpaid_number>=1)

SQL Server SELECT, SQL Server uses schemas to logically groups tables and other database objects. In our sample database, we have two schemas: sales and production . tables. To query data from a table, you use the SELECT statement. To filter rows based on one or more conditions, you use a WHERE clause as shown in the following  SQL Server uses schemas to logically groups tables and other database objects. In our sample database, we have two schemas: sales and production. The sales schema groups all the sales related tables while the production schema groups all the production related tables. To query data from a table, you use the SELECT statement.


SQL Server INSERT INTO SELECT By Practical Examples, To insert data from other tables into a table, you use the following SQL Server INSERT 1) Insert all rows from another table example SQL Server returned the following message indicating that two rows have been inserted successfully. Select from one table based on condition in another SQL expert Rudy Limeback explains how to select from one table based on condition in another using an inner join in Oracle. Share this item with your network:


SQL joins and how to use them, Different joins available in SQL are explained -- inner, left, right, and cross joins. data was all in a single table, we could easily retrieve a particular row from JOINs are clauses in SQL statements that link two tables together, usually based on The result of our SELECT query using an INNER JOIN would look like this:. Sometimes in a single query, it is required to join different tables based on a condition in one of the tables. For example, you need to get all persons participating in a contest as individuals or as members of a team. Contest table points either to Team or Person table depending on the participant type:


Create a query based on multiple tables - Access, You are embarking on a data sharing the other school's data into new tables in To view all the records from two tables SQL commands that you enter in a SQL In SQL view, type SELECT, followed by table you want to include in the query. Delete rows from a SQL table based on another table. SQL will join the tables based on the order and fields you specify in each table. How to split one column