I want to insert this query into the new column and below is my query:
INSERT INTO T_SG_WICA_POL_DATA (SubClassGroup)
SELECT M.[Subclass_Main]
FROM [WICA subclass mapping] AS M
LEFT JOIN T_SG_WICA_TRANSACTION_VIEW ON M.[Subclass Code] = Subclass;
But I received this error when trying to run it:
Cannot insert the value NULL into column 'AccountTenure', table 'analytics.dbo.T_SG_WICA_POL_DATA'; column does not allow nulls. INSERT fails.`
I want to insert to SubClassGroup column not AccountTenure column so I'm not sure why I get this error and how can I insert the value to SubClassGroup column?
By starting the query with INSERT INTO you are telling the system to insert an entirely new row in the table. You would need to provide a value for at least every column that does not define a default or auto increment value and that is not nullable.
INSERT INTO T_SG_WICA_POL_DATA (SubClassGroup, AccountTenure, ...)
SELECT M.Subclass_Main, M.AccountTenure, ...
FROM [WICA subclass mapping] AS M
If you want to update the value of one or more columns in one or more existing table rows you can use an update query:
UPDATE T_SG_WICA_POL_DATA SET SubClassGroup = M.Subclass_Main --, AccountTenure = M.AccountTenure, ...
FROM WICA subclass mapping AS M
JOIN T_SG_WICA_TRANSACTION_VIEW AS T ON M.[Subclass Code] = T.Subclass
--WHERE some_other_condition
Note that I changed the left join into a regular join since a left join will not add any constraints to the query, causing the update to apply to all rows instead of only the ones where a record is present in T_SG_WICA_TRANSACTION_VIEW with a matching Subclass code.
Related
I have two insert statements. The first query is to inserta new row if the id doesn't exist in the target table. The second query inserts to the target table only if the joined id hash value is different (indicates that the row has been updated in the source table) and the id in the source table is not null. These solutions are meant to be used for my SCD2 solution, which will be used for inserts of hundreds thousands of rows. I'm trying not to use the MERGE statement for practices.
The columns "Current" value 1 indicates that the row is new and 0 indicates that the row has expired. I use this information later to expire my rows in the target table with my update queries.
Besides indexing is there a more competent and effective way to improve my insert queries in a way that resembles the like of the SCD2 merge statement for inserting new/updated rows?
Query:
Query 1:
INSERT INTO TARGET
SELECT Name,Middlename,Age, 1 as current,Row_HashValue,id
from Source s
Where s.id not in (select id from TARGET) and s.id is not null
Query 2:
INSERT INTO TARGET
SELECT Name,Middlename,Age,1 as current ,Row_HashValue,id
FROM SOURCE s
LEFT JOIN TARGET t ON s.id = t.id
AND s.Row_HashValue = t.Row_HashValue
WHERE t.Row_HashValue IS NULL and s.ID IS NOT NULL
You can use WHERE NOT EXISTS, and have just one INSERT statement:
INSERT INTO TARGET
SELECT Name,Middlename,Age,1 as current ,Row_HashValue,id
FROM SOURCE s
WHERE NOT EXISTS (
SELECT 1
FROM TARGET t
WHERE s.id = t.id
AND s.Row_HashValue = t.Row_HashValue)
AND s.ID IS NOT NULL;
I have duplicated values in my data. However, from the duplicated values, i only want to store 1 values and remove the rest of same duplicated values.
So far, I have found the solution where they remove ALL the duplicated values like this.
Code:
SELECT ID, a.date as date.A, b.date as date.B,
CASE WHEN a.date <> b.date THEN NULL END AS b.date
except(date.A)
FROM
table1 a LEFT JOIN table2 b
USING (ID)
WHERE date.A = 1
Sample input:
Sample output (Store only 1 values from the duplicated values and remove the rest):
NOTE: query might wrong as it remove all duplicated values.
Considering your screenshot's sample data and your explanation. I understand that you want to remove duplicates from your table retaining only one row of unique data. Thus, I was able to create a query to select only one row of data ignoring the duplicates.
In order to select the rows without any duplicates, you can use SELECT DISTINCT. According to the documentation, it discards any duplicate rows. In addition to this method, CREATE TABLE statement will also be used to create a new table (or replace the previous one) with the new data without duplicates. The syntax is as follows:
CREATE OR REPLACE TABLE project_id.dataset.table AS
SELECT DISTINCT ID, a.date as date.A, b.date as date.B,
CASE WHEN a.date <> b.date THEN NULL END AS b.date
except(date.A)
FROM
table1 a LEFT JOIN table2 b
USING (ID)
WHERE date.A = 1
And the output will be exactly the same as you shared in your question.
Notice that I used CREATE OR REPLACE, which means if you set project_id.dataset.table to the same path as the table within your select, it will replace your current table (in case you have the data coming from one unique table). Otherwise, it will create a new table with the specified new table's name.
You can use aggregation. Something like this:
SELECT ANY_VALUE(a).*, ANY_VALUE(b).*
FROM table1 a LEFT JOIN
table2 b
USING (ID)
WHERE date.A = 1
GROUP BY id, a.date;
For each id/datecombination, this returns an arbitrary matching row froma/b`.
I want to copy a column from one table to another.
The number of rows is equal in both tables. The values I want to copy from table2 to table1 are unique. I've tried a few thing, but none so far work. My code is:
insert into alleoppdragpunkter3
select Idtall
from IDtall
Msg 2809, Level 16, State 1, Line 2
The request for procedure 'IDtall' failed because 'IDtall' is a table object.
I would like my column from table2 to be in table1.
You can try below-
insert into alleoppdragpunkter3(col1,col2,col3,....)
select col1,col2,col3,.... from IDtall
You do not copy columns between tables. You can insert rows and update columns.
Perhaps you want:
update p
set p.<col> = i.<col>
from alleoppdragpunkter3 p join
idtall i
on p.? = i.?;
The ? is for the column that specify the join conditions between the tables. The set references the column you want to update and which value to take.
I have an issue where to create a report, I need two tables to join that don't have any way to join. I did find a way they could potentially join, but it's complicated.
There is table A, which contains a column called select_criteria. Here are some examples of 3 values it contains:
SELECT DISTINCT SUM(TRANSCRIPTDETAIL.CREDIT_BILLING) FROM SOMETABLE WHERE (( STUDENTFINANCIAL.TUITION_EXEMPTION = 'EMPFT' ) OR ( STUDENTFINANCIAL.TUITION_EXEMPTION = 'EMPPT' )))
SELECT DISTINCT SUM(TRANSCRIPTDETAIL.CREDIT_BILLING) FROM SOMETABLE WHERE ( STUDENTFINANCIAL.TUITION_EXEMPTION = 'PART50' )
In table B, I have a column called tuition_exemption, which contains values like:
EMPFT
EMPPT
PART50
At the tail end of the whole value within the column in table A, there are the tuition exemption codes that match the values in table B.
Is there a way using MSSQL where I can parse out the codes from the long statement in select_criteria, so that they perfectly match the codes from table B? This is my thought on a way to join up table A and table B like I need to do. The other complication is that there is a 1:many connection between select_criteria and a tuition_exemption value, but a 1:1 connection between a tuition_exemption value and a select_criteria value.
So in the end, the join between the two tables should print, in one example, the same select_criteria value twice (I am referencing the first value in my list above from table A), but in those two rows, the two different tuition_exemption values (EMPFT and EMPPT). Or in the case of table A example 2, it would be printed once and match up to PART50 once.
I am stuck here. I have a statement that successfully grabs the select_criteria values I want:
SELECT select_criteria
WHERE (
select_criteria LIKE '%EMPFT%' OR
select_criteria LIKE '%EMPPT%' OR
select_criteria LIKE '%PART50%' OR
)
But what I need to do is this. When it grabs the select_criteria values I want, I then want to print to a new column in this table the code it matches up to. Those codes are values in table B like 'EMPFT', 'EMPPT' and 'PART50'. That is why I was thinking of basically parsing out the codes from select_criteria, and printing them into the new column in table A. That way table A and table B have a value to match up on and I write run my report. I just don't now how to do it in SQL. I kind of know in Perl, but was hoping to just do all of this in SSMS 2012.
Thanks for any help!
byobob
You can use any expression which returns a boolean as a join criteria. Since LIKE returns a bool, you should be able to just do this:
select *
from tableA
join tableB
on tableA.select_criteria like '%' + tableB.codecolumn + '%'
Hi my problem is I want to update a field in 1 table using another field from several tables dependant upon where the item originates my only problem is the table which im trying to update has several of the same values in so am getting 'single row sub-query returns more than 1 row'. I dont mind all of the updated fields with the same value being the same. Heres my SQL:
update URL_SET_TAB u
Set U.ITEM_NAME = (select a.PROGRAMME_NAME
from (SELECT (nvl(nvl(b.prog_name,c.movie_name), A.URL_1)) as programme_name, a.ID, a.URL_1
FROM URL_SET_TAB a, prog_name_lookup b, movie_name_lookup c
where a.url_1 = b.url_1(+) and a.url_1 = C.MOVIE_URL(+)
) a
where u.ID = a.ID and U.URL_1 = a.URL_1
)
You need to identify a key column which when matched for URL_SET_TAB and inline view a so that the subquery returns only a single record. This is a limitaion of an UPDATE clause.
Thanks,
Aditya