I am currently trying to insert data into a Redshift table from multiple temporary tables that I have created.
Insert into schema.table1 (
with a as (
select t1.country_code, t1.country_name
from t1
)
select * from a
);
The error that I get on this statement says the following: Amazon Invalid operation: syntax error at or near "as";. What do I need to change in order to be able to insert data from a temp table?
Is it not possible to run the command like this if you have same table structures in both schema.table1 and t1
insert into schema.table1
select t1.country_code, t1.country_name
from t1;
One other thing you might want to check is, in your SQL table1 is in 'schema' but t1 is referred without a schema so it's in public, make sure you don't have two t1s with different structures.
I just tried this and it worked for me.
insert into tempt1 ( with a as (select a from tempt2) select * from a);
Related
In MSSQL inserting into 2 tables is possible with single insert statement like below(with OUTPUT clause):
insert into Table1(ID1 , Col1)
OUTPUT inserted.ID1, Inserted.Col1
into Table2
values(1,'Col'), (2,'Col2');
Do we have any alternative for this in postgresql? I have tried with below already which is working for me now:
with cte as
(insert into Table1(ID1 , Col1)
values(1,'Col'), (2,'Col2')
returning *)
insert into Table2 select * from cte ;
Please let me know if we have any other alternative. I know about trigger also, but I don't want to use it here.
I'd like to create 3-4 separate temporary tables within a single BigQuery query (all of the tables are based on different data sources) and then join them in various ways later on in the query.
I'm trying to do this by using multiple WITH statements, but it appears that you're only able to use one WITH statement in a query if you're not nesting them. Each time I've tried, I get an error saying that a 'SELECT' statement is expected.
Am I missing something? I'd prefer to do this all in one query if at all possible.
I don't know what you mean by "temporary tables", but I suspect you mean common table expressions (CTEs).
Of course you can have a query with multiple CTEs. You just need the right syntax:
with t1 as (
select . . .
),
t2 as (
select . . .
),
t3 as (
select . . .
)
select *
from t1 cross join t2 cross join t3;
bq mk --table --expiration [INTEGER] --description "[DESCRIPTION]"
--label [KEY:VALUE, KEY:VALUE] [PROJECT_ID]:[DATASET].[TABLE]
Expiration date will make your table temporary. You can create one table at the time with "bq mk" but you can use this in a script.
You can use the DDL, but here also you can only create one table at the time.
{CREATE TABLE | CREATE TABLE IF NOT EXISTS | CREATE OR REPLACE TABLE}
table_name [( column_name column_schema[, ...] )]
[PARTITION BY partition_expression] [OPTIONS(options_clause[, ...])]
[AS query_statement]
If by "temporary table" you meant "subqueries" this is the syntax you have to use:
WITH
subQ1 AS (
SELECT * FROM Roster
WHERE SchoolID = 52),
subQ2 AS (
SELECT SchoolID FROM subQ1)
SELECT DISTINCT * FROM subQ2;
You should be able to use common table expressions without issue. However, if you have large queries with a significant amount of common table expressions/subqueries you may run into resource issues in BQ specifically regarding the ability for BQ to create an execution plan. Temporary tables have helped me in these scenarios, but there are likely better practices.
CREATE TEMP TABLE T1 AS (
WITH
X as (query),
Y as (query),
Z as (query)
SELECT * FROM
(combination_of_above_queries)
);
CREATE TEMP TABLE T2 AS (
WITH
A as (query),
B as (query),
C as (query)
SELECT * FROM
(combination_of_above_queries)
);
CREATE TABLE new_table AS (
SELECT *
FROM (combination of T1 and T2)
)
Apologies, I just saw happened to come across this question and wanted to share what helped me... hope it is helpful for you.
https://cloud.google.com/bigquery/docs/reference/standard-sql/data-definition-language#temporary_tables
I need to insert data into two different tables via a select statement.This select statement is calling an inline TVF.
What I have so far is :
INSERT INTO #Temp2 (RowNumber, ValFromUser, ColumnName, ValFromFunc, FuncWeight, percentage)
SELECT
RowNumber, #hospitalname, 'hospitalname',
PercentMatch, #constVal, PercentMatch * #constVal
FROM
dbo.Matchhospitalname (#hospitalname)
But there are certain columns that need to be supplied to a permanent table dbo.Cache.
Above mentioned query is called multiple times in the procedure.
Insert into dbo.Cache(StringSearched, ColName, RowId, PercentMatch)
select
ValFromUser, ColumnName, RowNumber, Max(ValFromFunc) as Percentage
from
#Temp2
group by
ValFromUser, ColumnName, RowNumber
Adding data into dbo.Cache separately as above would make all the previously added values to be added as many times as this statement is executed which is of course not desirable.
May be if it is not possible at all to add data to two tables via one select, we can do something like adding only those rows that were added in last insert statement only ?
Can I get some directions on this, please?
Edit : As suggested, I tried using OUTPUT INTO this way but Group by seems to be at the wrong place.The grouped rowsare to be inserted only in dbo.Cache and not in #Temp2
How do I solve this ?
INSERT INTO #Temp2 (RowNumber,ValFromUser,ColumnName,ValFromFunc,FuncWeight,percentage)OUTPUT
INSERTED.ValFromUser,
INSERTED.ColumnName,
INSERTED.RowNumber,
MAX(INSERTED.ValFromFunc)
INTO dbo.CACHE
(StringSearched, ColName, RowId, PercentMatch)
Group By Inserted.ValFromUser, Inserted.ColumnName, Inserted.RowNumber
SELECT RowNumber,#firstname,'firstname',PercentMatch,#constVal,PercentMatch * #constVal FROM dbo.MatchFirstName(#firstname)
You can do it via an output clause or more typically you can put a trigger on a table. In other words you can create an after insert trigger on temp table '#temp2'. I have never seen a trigger on a temp table but its possible. You will have to recreate the trigger every time the temp table is recreated. Remember that #temp2 will only exist (and be visible) in the session that it is created in.
I am trying to update one table from another, im able to update fine as long as the customer record exists, but there are some entries that dont.
To solve this i've tried running the following insert
SELECT *
INTO SalBudgetCust
FROM SalBudgetCust_temp
WHERE NOT EXISTS (
SELECT Customer
FROM SalBudgetCust
WHERE Customer = SalBudgetCust_temp.Customer
)
but im prompted with
There is already an object named 'SalBudgetCust' in the database.
Im stuck at this point... could anyone offer a little guideance?
SELECT INTO implicitly creates the table you name. You should instead use INSERT INTO ... SELECT * FROM ..., so that the existing table is used.
It should be INSERT INTO instead of SELECT * INTO ... like
INSERT INTO SalBudgetCust SELECT * FROM SalBudgetCust_temp
WHERE NOT EXISTS
(
SELECT Customer FROM SalBudgetCust WHERE Customer = SalBudgetCust_temp.Customer
)
The general syntax to insert data of one table into another is :
INSERT INTO new_table
SELECT * FROM old_table
WHERE some_condition;
Where, new_table is the table where you want to insert data, old_table is table from where you are fetching data and some_condition is the expression / condition based upon which you want to fetch data from old table.
You may use other clauses like order by, group by, and even sub queries after where clause.
May refer this SQL INSERT INTO and it's subsequent pages.
I'm trying to do a SELECT INTO using Oracle. My query is:
SELECT * INTO new_table FROM old_table;
But I get the following error:
SQL Error: ORA-00905: missing keyword
00905. 00000 - "missing keyword"
Any ideas what's wrong?
The Standard behavior of the above should be as I originally thought:
However Oracle implemented it totally differently in their own dialect of SQL
Oracle Docs on Insert ... Select
If NEW_TABLE already exists then ...
insert into new_table
select * from old_table
/
If you want to create NEW_TABLE based on the records in OLD_TABLE ...
create table new_table as
select * from old_table
/
If the purpose is to create a new but empty table then use a WHERE clause with a condition which can never be true:
create table new_table as
select * from old_table
where 1 = 2
/
Remember that CREATE TABLE ... AS SELECT creates only a table with the same projection as the source table. The new table does not have any constraints, triggers or indexes which the original table might have. Those still have to be added manually (if they are required).
select into is used in pl/sql to set a variable to field values. Instead, use
create table new_table as select * from old_table
Use:
create table new_table_name
as
select column_name,[more columns] from Existed_table;
Example:
create table dept
as
select empno, ename from emp;
If the table already exists:
insert into new_tablename select columns_list from Existed_table;
Try using this below statement instead of using select into in oracle:
select * from(select * from table1) table2 ;