I am really new to postgres. The question looks very simple but I just cant see where I got wrong.
I a table created as follows:
CREATE TABLE IF NOT EXISTS t(
tn VARCHAR(30) NOT NULL,
PRIMARY KEY(tn)
);
I want to insert an instance if the instance does not exist. Here is my code:
INSERT INTO t (tn)
VALUES
(SELECT 'q' WHERE NOT EXISTS (SELECT * FROM t WHERE tn = 'q')) ;
And the psql console keeps giving me the error
ERROR: syntax error at or near "SELECT"
I have checked every piece of code individually, for instance both
SELECT 'q' WHERE NOT EXISTS (SELECT * FROM t WHERE tn = 'q');
and
INSERT INTO t (tn) VALUES ('p');
run without error. But error occurs when I put them together.
Does anyone know where I got wrong..?
Lose VALUES and the brackets...
INSERT INTO t (tn)
SELECT 'q' WHERE NOT EXISTS (SELECT * FROM t WHERE tn = 'q');
Related
So, I am trying to add a data if a value in field does not exist. I am keep getting syntax error and not sure where I am getting it wrong.
INSERT INTO COMPANY_TABLE(company_name, company_phone, company_url)
VALUES ('test','010-4843-0000','www.company.com')
WHERE NOT EXISTS (SELECT * FROM COMPANY_TABLE WHERE company_name = 'test');
This is my code.
I am using H2 database
You're trying to combine a values table constructor with syntax of a select query
You can insert into a table using select:
INSERT INTO COMPANY_TABLE(company_name, company_phone, company_url)
SELECT 'test','010-4843-0000','www.company.com'
WHERE NOT EXISTS (SELECT * FROM COMPANY_TABLE WHERE company_name = 'test');
I have a small sample query that creates a temp table with a WITH command, and then runs a SELECT.
I want to INSERT INTO another table the result of my SELECT statement, but I am getting an error
WITH testingINSERT AS
(
SELECT *
FROM Dashboard.test1
)
INSERT INTO Dashboard.test2 (number)
SELECT *
FROM Dashboard.test1
The WITH statement in this case isn't really doing anything. However, I am trying to solve for the issue.
If I remove the INSERT line, the query runs fine
ERROR: Syntax error: Expected "(" or keyword SELECT but got keyword INSERT at [6:1]
Tried to be more explicit as well, and see the same error.
WITH testingINSERT AS
(
SELECT *
FROM Dashboard.test1
)
INSERT INTO Dashboard.test2 (number)
SELECT number
FROM Dashboard.test1
Tried this as well:
WITH testingINSERT AS
(
SELECT number
FROM Dashboard.test1
)
INSERT INTO Dashboard.test2 (number)
SELECT number
FROM testingINSERT
If I removve that line INSERT INTO, everything works fine, however, I am trying to put the returned values into another table.
INSERT INTO Dashboard.test2 (number)
WITH testingINSERT AS
(
SELECT number
FROM Dashboard.test1
)
SELECT number
FROM testingINSERT
I have a Table Function it return a table of (student_id,student_name)
I want to call it and insert the result into another table
I use
INSERT INTO STUDENT_TMP SELECT Table(MyDB.fn_getStudent())
but i did not get the result
I have got an error :
ERROR: DB2 SQL Error: SQLCODE=-390, SQLSTATE=42887,
SQLERRMC=MyDB.AA;SQL131208155041300,DRIVER=3.67.26
Error Code: -390
I found the followin exsample on ibm sites:
select t1.timeid, t1.storeid, t1.sales
from time, store, table (cvsample.salesfunc(time.timeid, store.storeid)) as t1
where time.timeid = t1.timeid and store.storeid = t1.storeid;
notice the syntax: table (cvsample.salesfunc(time.timeid, store.storeid)) as t1
so you prob dont need fields and 'as' you still need '*' and the 'FROM'
so
INSERT INTO STUDENT_TMP SELECT * FROM Table (MyDB.fn_getStudent())
When trying to use the WHERE NOT EXISTS clause to prevent adding a row with a duplicate value in the column age, I get the error syntax error at or near "WHERE".
Why did it throw a syntax error? I'm using Postgresql 9.1.
SQL
INSERT INTO live.users ("website", "age")
values ('abc', '123')
WHERE NOT EXISTS (SELECT age FROM live.users WHERE age = 123);
Error
ERROR: syntax error at or near "WHERE"
LINE 6: WHERE NOT EXISTS (SELECT age FROM live.users W...
Do instead:
INSERT INTO live.users ("website", "age")
SELECT 'abc', 123
WHERE NOT EXISTS (SELECT age FROM live.users WHERE age = 123);
INSERT INTO live.users ("website", "age")
select 'abc', '123'
WHERE NOT EXISTS (SELECT age FROM live.users WHERE age = 123);
I encountered some issues in using WHERE field NOT EXISTS in PLPGSQL. Instead what worked well was WHERE field NOT IN, I received no function errors after using that.
I see you asked for v9.1 but it's been 4 yrs since and now, starting from PostgreSQL v9.5 - INSERT gives you ON CONFLICT … DO NOTHING option:
INSERT INTO live.users("website", "age") VALUES('abc', '123') ON CONFLICT ("age") DO NOTHING
Worth noting this requires respective constraint set up on the target table - but in most cases, I imagine you would have it anyway. Otherwise you'll get:
ERROR: there is no unique or exclusion constraint matching the ON CONFLICT specification
In the Oracle, I copy data from a backup to a new table, it doesn't work.
what is the correct syntax ?
Thanks
select CODE, MESSAGE into EXCEPTION_CODES (CODE, MESSAGE)
from Exception_code_tmp
the error is
**SQL Error: ORA-00905: missing keyword
00905. 00000 - "missing keyword"**
You need an INSERT ... SELECT
INSERT INTO exception_codes( code, message )
SELECT code, message
FROM exception_code_tmp
If you want to create table with data . First create the table :
create table new_table as ( select * from old_table);
and then insert
insert into new_table ( select * from old_table);
If you want to create table without data . You can use :
create table new_table as ( select * from old_table where 1=0);
Creating a table and copying the data in a single command:
create table T_NEW as
select * from T;
* This will not copy PKs, FKs, Triggers, etc.
insert into EXCEPTION_CODES (CODE, MESSAGE)
select CODE, MESSAGE from Exception_code_tmp
create table xyz_new as select * from xyz where 1=0;
http://www.codeassists.com/questions/oracle/copy-table-data-to-new-table-in-oracle