I have two same tables. Each for each year.
15_docs:
id, name, org, slo, dok
16_docs:
id, name, org, slo, dok
Now I want to create view with UNION of both, but I need to know the rows origin.
Output VIEW:
id, name, org, slo, dok, year
How can I achieve that? I am using postgreSQL database.
SELECT id, name, org, slo, dok, 'year 2015' FROM 15_docs
UNION
SELECT id, name, org, slo, dok, 'year 2016' FROM 16_docs
Edit
This surely works for MS SQL server, have not test it on postgresql
you can use UNION & UNION ALL in this case , both give the same result because UNION clause give distinct rows at the end & UNION ALL clause combine all rows of both query result .But in this case ,this 'year' must create a uniqueness in each row . Try this query !
SELECT
id,
name,
org,
slo,
dok,
'year_15 ' as year
FROM
15_docs
UNION
SELECT
id,
name,
org,
slo,
dok,
'year_16 ' as year
FROM
16_docs
or
SELECT
id,
name,
org,
slo,
dok,
'year_15 ' as year
FROM
15_docs
UNION ALL
SELECT
id,
name,
org,
slo,
dok,
'year_16 ' as year
FROM
16_docs
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