I have a table with two columns (Name and Gender). There are 4 records in my table.
Name Gender
A Male
B Female
C Male
D Female
I would like to write a SQL Query to convert the above data to below format.
Male Female
A B
C D
Another possibility similar to Tim's but only requires a single CTE:
with numbered as (
select name, gender, row_number() over (partition by gender order by name) as rn
from the_table
)
select f.name as "Female", m.name as "Male"
from numbered f
full outer join numbered m on m.rn = f.rn and m.gender = 'Male'
where f.gender = 'Female';
By using a full outer join this also works if there is a different number of rows per gender.
It may be as simple as that:
SELECT m.Name Male, f.Name Female
FROM t m, t f
WHERE m.Gender = "Male" AND f.Gender = "Female";
But it doesn't make much sense, I hope you know what you're doing.
Here is one option, using CTEs:
WITH male AS (
SELECT Name, ROW_NUMBER() OVER (ORDER BY Name) rn
FROM yourTable
WHERE Gender = 'Male'
),
female AS (
SELECT Name, ROW_NUMBER() OVER (ORDER BY Name) rn
FROM yourTable
WHERE Gender = 'Female'
)
SELECT m.Name AS Male, f.Name AS Female
FROM male m
INNER JOIN female f
ON m.rn = f.rn;
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