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I am trying to sum the amount from the tbl_paid where transaction_num has same number and tbl_client.c_id = tbl_paid.c_id.

Basically means I am trying to add the amount of 3359 and 1 where there c_id = 172 and transaction_num = 2 because they have the same record. Row 1 and 2 and then the other is as is.

tbl_client

tbl_paid

Look at the first picture to see the query I used to join table and get the output.

What I am trying to do with my query is to show all the records from tbl_client joined by tbl_paid who are accounts that are paid today. If the pay twice this day the record of the amount will be added to the existing payment.


You want to show clients with their today's total payment. So, select the total payment per client and then join this to the client table.

select c.*, p.total
from tbl_client c
join 
(
  select c_id, sum(amount) as total
  from tbl_paid
  where pay_date = current_date()
  group by c_id
) p on p.c_id = c.c_id
order by c.c_id;

If you want to show clients with no current payment, too, then change the inner join to an outer join.

UPDATE: In the comments to ϻᴇᴛᴀʟ's answer you say you want to see the different transactions. If this is so, then you don't want the total per client, but the total per client and transaction, which is a very small change in the query:

select c.*, p.transaction_num, p.total
from tbl_client c
join 
(
  select c_id, transaction_num, sum(amount) as total
  from tbl_paid
  where pay_date = current_date()
  group by c_id, transaction_num
) p on p.c_id = c.c_id
order by c.c_id;

Join two tables based on Aggregate Function sum() result , You cannot use SUM in a WHERE clause. However, you can use it in a HAVING SELECT C.NAME,C.ADDRESS,O.CUSTOMERID FROM CUSTOMERS C� SQL Code: SELECT SUM(mycount) FROM(SELECT COUNT( * ) AS mycount FROM customer); Output: SUM(MYCOUNT) ----- 25 SQL SUM() and COUNT() with inner join. In the following example, we have discussed how SQL SUM and SQL COUNT function with the GROUP BY clause makes a join with SQL INNER JOIN statement.


sum() and group by is what you need.

select t3.*, t4.*
from tbl_client t4    
inner join
    (select sum(t2.amount) as amt, t1.transaction_num, t1.c_id
        from tbl_client t1
        inner join tbl_paid t2 on t1.c_id = t2.c_id
        where t1.pay_date = current_date()
        group by t1.transaction_num, t1.cid
    ) t3 on t3.c_id = t4.c_id 

SQL SUM() and COUNT() using variable, SUM of values of a field or column of a SQL table, generated using the GROUP BY clause makes a join with SQL INNER JOIN statement. SELECT i.country AS group_by , COUNT(*) AS item_count , SUM(i.price) AS cost , SUM(p.sum_amount) AS earned , SUM(e.sum_amount) AS extra_earned FROM items i LEFT JOIN ( SELECT item_id, SUM(amount) AS sum_amount FROM payments GROUP BY 1 ) p ON p.item_id = i.id LEFT JOIN ( SELECT item_id, SUM(amount) AS sum_amount FROM extras GROUP BY 1 ) e ON e.item_id = i.id GROUP BY 1;


You can use SUM() :

 select SUM(amount), t1.transaction_num
   from tbl_client t1
   left join tbl_paid t2 on t1.c_id = t2.c_id
   where t1.transaction_num = 2 and t1.c_id = 172`

An Introduction to Using SQL Aggregate Functions with JOINs , Powerful SQL tools. Let's see how they cooperate paired with LEFT JOIN, SUM and GROUP BY perform computations on multiple tables. The SQL Server SUM () function is an aggregate function that calculates the sum of all or distinct values in an expression. The syntax of the SUM () function is as follows: SUM ([ALL | DISTINCT ] expression)


SUM() across multiple tables - Databases, Hi guys, I am trying to do 2 sums in this mysql query. examine the result set and convince yourself that you have joined the tables properly, and that those are indeed the right #1064 - You have an error in your SQL syntax. The SQL COUNT(), AVG() and SUM() Functions. The COUNT() function returns the number of rows that matches a specified criterion. The AVG() function returns the average value of a numeric column. The SUM() function returns the total sum of a numeric column. COUNT() Syntax


SQL Inner Join Multiple Tables with SUM Tutorial, Use inner joins with multiple tables to create reports. Uses aliases, and the SUM aggregate Duration: 18:03 Posted: Mar 24, 2013 Step 1: Get sum of values from two tables. SELECT SUM(column1) FROM table1. SELECT SUM(column2) FROM table2. Step 2: Handle null case. Sometime one of these tables may not have any data in column1 or column2. So use NVL. SELECT NVL(SUM(column1),0) FROM table1. SELECT NVL(SUM(column2),0) FROM table2. Step 3: Sum the two numbers


How can sum the values of two tables into one table in SQL , The SUM() Function adds numeric column values together and returns the result. It's very easy to use How do we join 3 tables inner JOINs in SQL? 570 Views. Different Types of SQL JOINs. 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