I am running the following query
INSERT INTO TABLE X(A,B,C) select A,B,C FROM Y
FAILED: SemanticException 1:27 '[A, B, C]' in insert schema specification are not found among regular columns of default.X nor dynamic partition columns.. Error encountered near token 'C'
INSERT INTO TABLE X(a,b,c) select A,B,C FROM Y;
//no error
Why is the insert statement needs the column names to be lowercase ? If I perform a "show create table A" I am seeing the column names to be lower case is that the reason ?
Any answer is welcome. Thanks in advance.
Related
I am a beginner to database, and I am trying to run a subquery to insert data from one table to another one with identical schema.
insert into tbl_technologies_used (t_name_tech, t_category_tech, i_rating)
values (
select t_name_tech, t_category_tech, i_rating
from tbl_technologies_proposed
);
But I got this error:
ERROR: syntax error at or near "select"
LINE 1: ... (t_name_tech, t_category_tech, i_rating) values (select t_n...
How can I fix this issue? I have checked my code again and again, but I can't find out the error.
If the source of an INSERT is a SELECT, you can't use VALUES:
insert into tbl_technologies_used (t_name_tech, t_category_tech, i_rating)
select t_name_tech, t_category_tech, i_rating
from tbl_technologies_proposed
The values clause provides a static set of rows which is not needed as the rows to be inserted come from your SELECT statement.
I have multiple tables with very similar schema except one column, which can have different names.
I want to make some complicated calculations using Hive and would like to have one code for all tables with possible parametrisation. For some reasons, I can't parametrise queries using language like Python, Scala etc, so decided to go with pure Hive SQL.
I want to conditionally select appropriate column, but it seems, that Hive evaluates all parts of conditional expression/statement regardless of condition.
What did I wrong?
DROP TABLE IF EXISTS `so_sample`;
CREATE TABLE `so_sample` (
`app_version` string
);
SELECT
if (true, app_version, software_version) AS firmware
FROM so_sample
;
Output:
Error: Error while compiling statement: FAILED: SemanticException [Error 10004]: Line 2:25 Invalid table alias or column reference 'software_version': (possible column names are: app_version) (state=42000,code=10004)
Regards
Pawel
Try to use regex to select the column with different names, for more information see manual and don't forget
set hive.support.quoted.identifiers=none;
I am trying to write a query passing three variables together:-
select
a,b,c,*
from table1 where
(a,b,c) in (('1','2','3'),('4','5','6'));
This gives me results when none of the values are null.
However when I try to pass atleast one of them as null/blank it gives me invalid relational operator error:-
select
a,b,c,*
from table1 where
(a,b,c) in (('1','2',null),('4','5',''));
[Error Code: 920, SQL State: 42000] ORA-00920: invalid relational operator
Could you please help me with a workaround to handle this?
I can use union of three different queries but that is error prone with huge data to query.
Thanks,
That's because you giving it options to only pull non-null values, try something like this
select
a,b,c,*
from table1 where
(a in ('1', '4')) or (b in ('2','5')) or (c in ('3','6'));
Is it possible to use
SELECT DB.TABLE.COLUMN from DB.TABLE
in Hive?
I know it's possible to alias DB.TABLE as follows
SELECT T1.COLUMN FROM DB.TABLE AS T1
But, is there any way in Hive to select a column fully qualified by its database and table name, as shown in the first query above? I've done this before in MySQL but I don't know if there's a way to make Hive work this way.
No, that is not possible in Hive, you will get an exception:
SemanticException [Error 10004]: Line 1:7 Invalid table alias or column reference 'DB': (possible column names are: col)
And your second select sentence is valid.
To specify a database, either qualify the table names with database names ("db_name.table_name" starting in Hive 0.7) or issue the USE statement before the query statement (starting in Hive 0.6).
See language manual here: LanguageManual+Select
Two tables are identical in terms of table name, column names, datatype and size. These tables are located in separate databases, but I am use to
current Log in in hr user.
insert into abc.employees select * from employees where employee_id=100;
I can not give use original query from corporate office.
Error starting at line 1 in command:
insert into abc.employees select * from employees where employee_id=100;
Error at Command Line:1 Column:25
Error report:
SQL Error: ORA-00913: too many values
00913. 00000 - "too many values"
*Cause:
*Action:
You should specify column names as below. It's good practice and probably solve your problem
insert into abc.employees (col1,col2)
select col1,col2 from employees where employee_id=100;
EDIT:
As you said employees has 112 columns (sic!) try to run below select to compare both tables' columns
select *
from ALL_TAB_COLUMNS ATC1
left join ALL_TAB_COLUMNS ATC2 on ATC1.COLUMN_NAME = ATC1.COLUMN_NAME
and ATC1.owner = UPPER('2nd owner')
where ATC1.owner = UPPER('abc')
and ATC2.COLUMN_NAME is null
AND ATC1.TABLE_NAME = 'employees'
and than you should upgrade your tables to have the same structure.
The 00947 message indicates that the record which you are trying to send to Oracle lacks one or more of the columns which was included at the time the table was created.
The 00913 message indicates that the record which you are trying to send to Oracle includes more columns than were included at the time the table was created.
You just need to check the number of columns and its type in both the tables
ie the tables that are involved in the sql.
If you are having 112 columns in one single table and you would like to insert data from source table, you could do as
create table employees as select * from source_employees where employee_id=100;
Or from sqlplus do as
copy from source_schema/password insert employees using select * from
source_employees where employee_id=100;
For me this works perfect
insert into oehr.employees select * from employees where employee_id=99
I am not sure why you get error. The nature of the error code you have produced is the columns didn't match.
One good approach will be to use the answer #Parodo specified
this is a bit late.. but i have seen this problem occurs when you want to insert or delete one line from/to DB but u put/pull more than one line or more than one value ,
E.g:
you want to delete one line from DB with a specific value such as id of an item but you've queried a list of ids then you will encounter the same exception message.
regards.