I try to update value from one table with another table by use IP_ID to compare 2 table by following sybtax
UPDATE EDWID02.CUSTOMER_MOBILE t1
SET T1.MOBILE = (
SELECT T2.MOBILE
FROM EDWID02.NEW_MOBILE t2
WHERE T1.IP_ID=T2.IP_ID)
The error I found was DB2 Database Error:
ERROR [21000] [IBM][DB2/AIX64] SQL0811N The result of a scalar fullselect,
SELECT INTO statement, or VALUES INTO statement is more than one row.
SQLSTATE=21000
even I change = to in it's told me another error DB2 Database Error:
ERROR [42601] [IBM][DB2/AIX64] SQL0104N An unexpected token "in" was found
following "t1 SET T1.MOBILE". Expected tokens may include: "=".
SQLSTATE=42601
I am coding in DB2.
your misunderstanding
'UPDATE t1 SET value=onevalue'
onevalue needs to be a single value. You may achieve this by (SELECT value FROM t2 WHERE t1.id = t2.id FETCH FIRST 1 ROW ONLY)
Related
I am running the query below and I am getting the error shown
core=# INSERT INTO transactionp SELECT * FROM transaction WHERE posting_date>'2021-08-17';
ERROR: column "balance" is of type u_money but expression is of type u_datetime
LINE 1: INSERT INTO transactionp SELECT * FROM transaction WHERE pos...
^
HINT: You will need to rewrite or cast the expression.
It's most likely because of the dreaded select * and not specifying target columns for the insert. Both are considered "code smell" and should be avoided.
The error message suggests that the order of columns is different in the source and target tables (they are matched by position not by name)
To fix this, specify column names in both parts: the INSERT and the SELECT statement:
INSERT INTO transactionp (balance, some_column, another_column, ...)
SELECT some_balance, column_one, column_two, ...
FROM transaction
WHERE posting_date>'2021-08-17';
%sql select Name_of_School, Safety_Score from SCHOOLS where \
Safety_Score= (select MAX(Safety_Score) from SCHOOLS)
i am trying to execute this query i got the message.
ibm_db_sa://rbm44299:***#dashdb-txn-sbox-yp-lon02-04.services.eu-gb.bluemix.net:50000/BLUDB
(ibm_db_dbi.ProgrammingError) ibm_db_dbi::ProgrammingError: SQLNumResultCols failed: [IBM][CLI Driver][DB2/LINUXX8664] SQL0206N "SAFETY_SCORE" is not valid in the context where it is used. SQLSTATE=42703 SQLCODE=-206
[SQL: select Name_of_School, Safety_Score from SCHOOLS where Safety_Score= (select MAX(Safety_Score) from SCHOOLS)]
(Background on this error at: http://sqlalche.me/e/f405)
SQL0206N is this error message https://www.ibm.com/support/knowledgecenter/SSEPGG_11.5.0/com.ibm.db2.luw.messages.sql.doc/com.ibm.db2.luw.messages.sql.doc-gentopic1.html#sql0206n
SQL0206N name is not valid in the context where it is used.
This error can occur in the following cases:
For an INSERT or UPDATE statement, the specified column is not a column of the table, or view that was specified as the object of the insert or update.
For a SELECT or DELETE statement, the specified column is not a column of any of the tables or views identified in a FROM clause in the statement.
among other cases.
I.e. Column SAFETY_SCORE does not exist in your table. Maybe the column is "Safety_Score" or "Safety Score" or some other name.
If the column name is not in UPPER CASE in your table, you will need to surround it in double quotes.
I could fix by using the %%sql structure and the double quotes :
%%sql
select MAX("Safety Score") AS MAX_SAFETY_SCORE from Chicago_SCHOOLS;
I am trying to update a field in a table in Postgres called certificate_name by concatenating 3 fields from another table (first_name, middle_name, and last_name). I have tried several statements, but they all throw errors; my most recent attempt was the following:
update candidate_attributes ca
inner join "user" u on u.id=ca.candidate_user_id
set ca.certificate_name = concat(u.first_name, u.middle_name, u.last_name);
I'm getting an error that says:
syntax error at or near "inner"....
What am I doing wrong?
Your syntax isn't valid in Postgres. Resembles SQL Server syntax.
Read the manual on UPDATE and use instead:
UPDATE candidate_attributes ca
SET certificate_name = concat_ws(' ', u.first_name,u.middle_name,u.last_name)
FROM "user" u
WHERE u.id = ca.candidate_user_id;
I also threw in concat_ws() instead of concat(), assuming you want a space between each part of the name.
--DB2 version 10 on AIX
I have a stored procedure, which I need to update. And want to check if there is data for a certain date. If data exists, go on, else run insert and then go on.
IF (SELECT COUNT(*)
FROM SCHEMA1.TABLE1_STEP1
WHERE XDATE = '9/27/2014' < 1)
THEN (INSERT INTO SCHEMA1.TABLE1_STEP1 (SELECT * FROM SCHEMA2.TABLE2 FETCH FIRST 2 ROWS ONLY))
END IF;
This errors-out.
DB2 Database Error: ERROR [42601] [IBM][DB2/AIX64] SQL0104N An unexpected token "(" was found following "/2014') < 1) THEN". Expected tokens may include: "". SQLSTATE=42601
Any thoughts on what's wrong?
I'm guessing you probably want the less than sign outside of the parenthesis...
However, as an aside, you can also do this kind of statement without an IF (although, I don't have an AIX DB2 available to check for sure. It worked on DB2 for z/OS and LUW, however):
INSERT INTO SCHEMA1.TABLE1_STEP1
SELECT *
FROM SCHEMA2.TABLE2
WHERE NOT EXISTS (
SELECT *
FROM SCHEMA1.TABLE1_STEP1
WHERE XDATE = '9/27/2014'
)
FETCH FIRST 2 ROWS ONLY
Also, you're not providing an ORDER BY on the SCHEMA2.TABLE2 select, so your results could come back in any order (whatever is "easiest" for the database engine)... order is not guaranteed unless you provide the ORDER BY statement.
I am trying to use PostgreSQL's currval function to return the last inserted row id of a table called Concept. Concept has a serial primary key called cid and there was an automatically generated Sequence called Concept_cid_seq.
I try the following statement and get an error:
SELECT currval("Concept_cid_seq");
ERROR: column "Concept_cid_seq" does not exist
LINE 1: SELECT currval("Concept_cid_seq");
^
********** Error **********
ERROR: column "Concept_cid_seq" does not exist
SQL state: 42703
Character: 16
But when I run the query :
SELECT * from "Concept_cid_seq";
I get a table with one row (as I'd expect) showing columns like last_value, start_value, etc...
What am I missing here? Am I passing the wrong information to currval? Why does it say the 'column does not exist?'
It turns out that this was an issue with capitalization and quotes. Because I wanted to preserve the capitalization of the relation name I needed to use both single and double quotes in order to pass the correct relation name to currval.
I changed the query to SELECT currval('"Concept_cid_seq"'); (note the outer single quotes) and it worked correctly.