I have two tables as shown in the image. I would like to join two table. As shown in thane tables, first row is matching exactly, but in the second row last 17 digits(WSAV_3PE_RET_0720) are matching. I would like join this one also. So there should be two conditions.
Exactly matching
Last 17 digits are matching.
How to write the code in this scenario. Here is my partial code.
Select *,t2.Balance from t1 left join t2 on t1.Place = t2.Place
Below is for BigQuery Standard SQL
#standardSQL
SELECT t1.*, t2.Balance
FROM `project.dataset.table1` t1
LEFT JOIN `project.dataset.table2` t2
ON SUBSTR(REVERSE(t1.Place), 1, 17) = SUBSTR(REVERSE(t2.Place), 1, 17)
Related
I want to join two tables in Access based on different wildcards for different rows.
The first, table1, contains rows with different wildcards and table2 contains the column that should be matched with the wildcards in table1.
I imagine the SQL code to look like:
SELECT *
FROM table2
LEFT JOIN table1
ON table2.subject LIKE table1.wildcard
The tables look like this: https://imgur.com/a/O9OPAL6
The third pictures shows the result that I want.
How do I execute the join or is there an alternative?
I don't think MySQL support non-equality conditions for JOINs. So, you can do this as:
SELECT * -- first get the matches
FROM table2 as t2, -- ugg, why doesn't it support CROSS JOIN
table1 as t1
WHERE t2.subject LIKE t1.wildcard
UNION ALL
SELECT * -- then get the non-matches
FROM table2 as t2 LEFT JOIN
table1 as t1
ON 1 = 0 -- always false but gets the same columns
WHERE NOT EXISTS (SELECT 1
FROM table1 as t1
WHERE t2.subject LIKE t1.wildcard
);
I have two tables joined up together
I need to see if Product Code from table 1 (On the left) matches with the on on the right, based on their barcodes.. I have managed to inner join the barcodes and show only barcodes that match up. Just the prdouct code is the problem now...
Is this what you want?
select t1.*
from table1 t1
where not exists (select 1
from table2 t2
where t2.code = t1.product_code and t2.barcode = t1.barcode
);
This selects rows from table1 with no matches in table2.
I have been working on this problem for 3 months now and gave up once or twice. Yes, I am a novice. I created 3 tables with data. Table 1 has a letter and number. Table 2 has a name, letter and number. Table 3 has the end result. I want to compare the T1 and T2. If the name and number in T1 matches a name and number in table 2. I want the result to in T3 to include name, letter and number. This is what I have so far but it is not working.
SELECT * FROM T1 and SELECT * FROM T2
WHEN
TABLE T1(letter) && TABLE T2(letter)
AND
TABLE T1(number) && TABLE T2(letter)
INSERT INTO TABLE T3 (name,letter,number)
What you need is to do an inner join of the first and second tables based on the attributes name and letter.
SELECT T2.name, T2.letter, T2.number
FROM T1
INNER JOIN T2
ON T1.letter=T2.letter AND T1.number=T2.number;
For more details, you can refer http://www.w3schools.com/sql/sql_join.asp
To expand upon Dinesh's answer,
You'll need an inner join for this. Inner joins gives you rows that match the columns in both tables you've specified.
You can then combine it into an insert statement to put it into your T3 table. So this is one complete SQL statement:
INSERT INTO T3
SELECT T2.name, T2.letter, T2.number
FROM T2
INNER JOIN T1
ON T2.letter = T1.letter
AND T2.number = T1.number;
As a side note, there's also left joins and right joins (and heaps more). Think of Left, Inner, Right joins as two circles in a venn diagram.
I have two tables that I'd like to join
Right now I just do :
SELECT * FROM (default_insurance)
JOIN default_profiles ON uid = default_profiles.id
WHERE `uid` = '1
problem is that both default_insurance and default_profiles contains a column named company, and I only want the one from default_insurance, but is there a way to make a join that will automatically prefer columns from one of the tables WITHOUT having to SELECT (all columns that I want)
You can always specify what exactly do you need (+use table aliases):
SELECT t1.*, t2.company AS default_insurance_company
FROM default_profiles t1 LEFT JOIN default_insurance t2
ON t1.uid = t2.id
WHERE t1.uid = 1
(MySQL example)
Above will return all columns from t1 and additionally column company from t2, but on your result it will be named default_insurance_company.
Automatically no. You need to use like this:
SELECT [all columns that you want], di.company
FROM default_insurance di
JOIN default_profiles dp ON di.uid = dp.id
WHERE di.uid = '1
I am a little confused as to how to approach this SQL query.
I have two tables (equal number of records), and I would like to return a column with which is the division between the two.
In other words, here is my not-working-correctly query:
SELECT( (SELECT v FROM Table1) / (SELECT DotProduct FROM Table2) );
How would I do this? All I want it a column where each row equals the same row in Table1 divided by the same row in Table2. The resulting table should have the same number of rows, but I am getting something with a lot more rows than the original two tables.
I am at a complete loss. Any advice?
It sounds like you have some kind of key between the two tables. You need an Inner Join:
select t1.v / t2.DotProduct
from Table1 as t1
inner join Table2 as t2
on t1.ForeignKey = t2.PrimaryKey
Should work. Just make sure you watch out for division by zero errors.
You didn't specify the full table structure so I will assume a common ID column to link rows in the tables.
SELECT table1.v/table2.DotProduct
FROM Table1 INNER JOIN Table2
ON (Table1.ID=Table2.ID)
You need to do a JOIN on the tables and divide the columns you want.
SELECT (Table1.v / Table2.DotProduct) FROM Table1 JOIN Table2 ON something
You need to substitue something to tell SQL how to match up the rows:
Something like: Table1.id = Table2.id
In case your fileds are both integers you need to do this to avoid integer math:
select t1.v / (t2.DotProduct*1.00)
from Table1 as t1
inner join Table2 as t2
on t1.ForeignKey = t2.PrimaryKey
If you have multiple values in table2 relating to values in table1 you need to specify which to use -here I chose the largest one.
select t1.v / (max(t2.DotProduct)*1.00)
from Table1 as t1
inner join Table2 as t2
on t1.ForeignKey = t2.PrimaryKey
Group By t1.v