I have tried a few different ways to list the db properties and have come up short.
SQL> SHOW DATABASE VERBOSE emp;
SP2-0158: unknown SHOW option "DATABASE"
SP2-0158: unknown SHOW option "VERBOSE"
SP2-0158: unknown SHOW option "emp"
Heres another that I dont understand why its not working
SQL> show database;
SP2-0158: unknown SHOW option "database"
SQL> DGMGRL
SP2-0042: unknown command "DGMGRL" - rest of line ignored.
Does anyone have ideas as to what I am missing.
There's a table called database_properties - you should query that
select property_name, property_value, description from database_properties
If this isn't what you're looking for, you should be more specific
If you wan the full version information for your DB then:
SELECT *
FROM v$version;
If you want your DB parameters then:
SELECT *
FROM v$parameter;
If you want more information about your DB instance then:
SELECT *
FROM v$database;
If you want the database properties then:
SELECT *
FROM database_properties;
If you want the "size" of your database then this will give you a close enough calculation:
SELECT SUM(bytes / (1024*1024)) "DB Size in MB"
FROM dba_data_files;
You will need DBA level permissions to see these views or you could request the data from your DBA and he will (probably) oblige.
Hope it helps...
SHOW DATABASE is not a valid SQL*Plus command.
The correct syntax is SHOW option where option is one of:
system_variable ALL BTI[TLE]ERR[ORS] [ { FUNCTION | PROCEDURE | PACKAGE |
PACKAGE BODY | TRIGGER | VIEW | TYPE | TYPE BODY | DIMENSION | JAVA CLASS }
[schema.]name] LNO PARAMETERS [parameter_name] PNO RECYC[LEBIN] [original_name]
REL[EASE] REPF[OOTER] REPH[EADER] SGA SPOO[L] SPPARAMETERS [parameter_name
SQLCODE TTI[TLE] USER XQUERY
Related
I'd like to create a table name in Hive using variable substitution.
E.g.
SET market = "AUS";
create table ${hiveconf:market_cd}_active as ... ;
But it fails. Any idea how it can be achieved?
You should use backtrics (``) for name for that, like:
SET market=AUS;
CREATE TABLE `${hiveconf:market}_active` AS SELECT 1;
DESCRIBE `${hiveconf:market}_active`;
Example run script.sql from beeline:
$ beeline -u jdbc:hive2://localhost:10000/ -n hadoop -f script.sql
Connecting to jdbc:hive2://localhost:10000/
...
0: jdbc:hive2://localhost:10000/> SET market=AUS;
No rows affected (0.057 seconds)
0: jdbc:hive2://localhost:10000/> CREATE TABLE `${hiveconf:market}_active` AS SELECT 1;
...
INFO : Dag name: CREATE TABLE `AUS_active` AS SELECT 1(Stage-1)
...
INFO : OK
No rows affected (12.402 seconds)
0: jdbc:hive2://localhost:10000/> DESCRIBE `${hiveconf:market}_active`;
...
INFO : Executing command(queryId=hive_20190801194250_1a57e6ec-25e7-474d-b31d-24026f171089): DESCRIBE `AUS_active`
...
INFO : OK
+-----------+------------+----------+
| col_name | data_type | comment |
+-----------+------------+----------+
| _c0 | int | |
+-----------+------------+----------+
1 row selected (0.132 seconds)
0: jdbc:hive2://localhost:10000/> Closing: 0: jdbc:hive2://localhost:10000/
Markovitz's criticisms are correct, but do not produce a correct solution. In summary, you can use variable substitution for things like string comparisons, but NOT for things like naming variables and tables. If you know much about language compilers and parsers, you get a sense of why this would be true. You could construct such behavior in a language like Java, but SQL is just too crude.
Running that code produces an error, "cannot recognize input near '$' '{' 'hiveconf' in table name".(I am running Hortonworks, Hive 1.2.1000.2.5.3.0-37).
I spent a couple hours Googling and experimenting with different combinations of punctuation, different tools ranging from command line, Ambari, and DB Visualizer, etc., and I never found any way to construct a table name or a field name with a variable value. I think you're stuck with using variables in places where you need a string literal, like comparisons, but you cannot use them in place of reserved words or existing data structures, if that makes sense. By example:
--works
drop table if exists user_rgksp0.foo;
-- Does NOT work:
set MY_FILE_NAME=user_rgksp0.foo;
--drop table if exists ${hiveconf:MY_FILE_NAME};
-- Works
set REPORT_YEAR=2018;
select count(1) as stationary_event_count, day, zip_code, route_id from aaetl_dms_pub.dms_stationary_events_pub
where part_year = '${hiveconf:REPORT_YEAR}'
-- Does NOT Work:
set MY_VAR_NAME='zip_code'
select count(1) as stationary_event_count, day, '${hiveconf:MY_VAR_NAME}', route_id from aaetl_dms_pub.dms_stationary_events_pub
where part_year = 2018
The qualifies should be removed
You're using the wrong variable name
SET market=AUS; create table ${hiveconf:market}_active as select 1;
The parameterization example in the "SQL Parameters" IPython notebook in the datalab github repo (under datalab/tutorials/BigQuery/) shows how to change the value being tested for in a WHERE clause. Is it possible to use a parameter to change the name of a field being SELECT'd on?
eg:
SELECT COUNT(DISTINCT $a) AS n
FROM [...]
After I received the answer below, here is what I have done (with a dummy table name and field name, obviously):
%%sql --module test01
DEFINE QUERY get_counts
SELECT $a AS a, COUNT(*) AS n
FROM [project_id.dataset_id.table_id]
GROUP BY a
ORDER BY n DESC
table = bq.Table('project_id.dataset_id.table_id')
field = table.schema['field_name']
bq.Query(test01.get_counts,a=field).sql
bq.Query(test01.get_counts,a=field).results()
You can use a field from a Schema object (eg. given a table, get a specific field via table.schema[fieldname]).
Or implement a custom object with a _repr_sql_ method. See: https://github.com/GoogleCloudPlatform/datalab/blob/master/sources/lib/api/gcp/bigquery/_schema.py#L49
According to documentation here, I should be able to reference a table wildcard function as an alias:
...
FROM
[project_name:]datasetId.tableId |
(subselect_clause) |
table wildcard function
[[AS] alias]
...
But, when I try to do this, things fail:
bq query "SELECT * FROM TABLE_QUERY(my_data, \"TIMESTAMP(table_id) BETWEEN TIMESTAMP('2014-05-21') AND TIMESTAMP('2014-06-10')\") AS blah WHERE blah.foo = 5 LIMIT 30"
Waiting on bqjob_some_id ... (0s) Current status: DONE
BigQuery error in query operation: Error processing job 'some_id': Field 'blah.foo' not found in table 'mydata.20140521'; did you mean 'foo2'?
I want to do a join on the data returned from the wildcard function treating it as a single table, so aliasing it is very important to me. Ideas?
The page you linked to does mention "Do not use alias with a table wildcard function."
You might want to try
SELECT *
FROM (SELECT * FROM TABLE_QUERY(--insert query here--)) AS blah
WHERE blah.foo = 5 LIMIT 30"
I am looking for few global variable in mysql which are equivalent of sql server.
I want the whole list
eg.
Sql Server Equivalent
##error ---
##Identity ---
etc.
Basically right now I want to know what are the equivalent variable of ##error and ##identity.
But it will be helpfull if u could provide some other variable also
The last auto_increment value (i.e. the last identity) generated for the current connection can be found using the LAST_INSERT_ID() function.
About errors, not sure ; there doesn't seem to be any system variable that corresponds to the last error message.
There is a show errors statement :
mysql> select a from b;
ERROR 1046 (3D000): No database selected
mysql> show errors;
+-------+------+----------------------+
| Level | Code | Message |
+-------+------+----------------------+
| Error | 1046 | No database selected |
+-------+------+----------------------+
1 row in set (0,00 sec)
But not sure how you can use this result...
After searching a bit more, I found out this thread : Getting the last error message, which says (quoting) :
I think there should be something like
##last_error_id and
##last_error_message, but I can`t
find anything in the current manual.
And the first answer states (quoting) :
This isn't possible currently, from
what we understand error handling will
be improved in version 5.2 and
hopefully something like this may be
possible.
If you are interested in the number of errors (or if there was an error), using ##error_count seems to work.
> select a from bogus_table;
(1054, "Unknown column 'a' in 'field list'")
> select ##error_count;
+---------------+
| ##error_count |
+---------------+
| 1 |
+---------------+
Regarding Errors, there is a facility using which you can get the error number and other things. There is a utility named GET DIAGNOSTICS using which you can query database diagnostics data. Refer the example below -
GET DIAGNOSTICS #NUM = NUMBER, #rowsAffected = ROW_COUNT;
-- here #NUM and #rowsAffected are user variables. Any other variables can work here as well.
In above statement you can get number of error conditions and number of rows affected. For error conditions we refer another variant of this utility which consumes number of error count that we got from above statement.
GET DIAGNOSTICS CONDITION #NUM
#errNo = mysql_errno, -- Error Number
#msg = message_text, -- Error Message Text
#sqlState = sqlstate_returned -- Affected SQL State under which error occured
;
A word of caution though - use these statement as soon as you expect your sql to fail. Since these capture internals database diagnostics any other function can quickly overlap your session data.
For more on this, refer link here
I am using Oracle SQL (in SQLDeveloper, so I don't have access to SQLPLUS commands such as COLUMN) to execute a query that looks something like this:
select assigner_staff_id as staff_id, active_flag, assign_date,
complete_date, mod_date
from work where assigner_staff_id = '2096';
The results it give me look something like this:
STAFF_ID ACTIVE_FLAG ASSIGN_DATE COMPLETE_DATE MOD_DATE
---------------------- ----------- ------------------------- ------------------------- -------------------------
2096 F 25-SEP-08 27-SEP-08 27-SEP-08 02.27.30.642959000 PM
2096 F 25-SEP-08 25-SEP-08 25-SEP-08 01.41.02.517321000 AM
2 rows selected
This can very easily produce a very wide and unwieldy textual report when I'm trying to paste the results as a nicely formatted quick-n-dirty text block into an e-mail or problem report, etc. What's the best way to get rid of all tha extra white space in the output columns when I'm using just plain-vanilla Oracle SQL? So far all my web searches haven't turned up much, as all the web search results are showing me how to do it using formatting commands like COLUMN in SQLPLUS (which I don't have).
In your statement, you can specify the type of output you're looking for:
select /*csv*/ col1, col2 from table;
select /*Delimited*/ col1, col2 from table;
there are other formats available such as xml, html, text, loader, etc.
You can change the formatting of these particular options under tools > preferences > Database > Utilities > Export
Be sure to choose Run Script rather than Run Statement.
* this is for Oracle SQL Developer v3.2
What are you using to get the results? The output you pasted looks like it's coming from SQL*PLUS. It may be that whatever tool you are using to generate the results has some method of modifying the output.
By default Oracle outputs columns based upon the width of the title or the width of the column data which ever is wider.
If you want make columns smaller you will need to either rename them or convert them to text and use substr() to make the defaults smaller.
select substr(assigner_staff_id, 8) as staff_id,
active_flag as Flag,
to_char(assign_date, 'DD/MM/YY'),
to_char(complete_date, 'DD/MM/YY'),
mod_date
from work where assigner_staff_id = '2096';
What you can do with sql is limited by your tool. SQL Plus has commands to format the columns but they are not real easy to use.
One quick approach is to paste the output into excel and format it there or just attach the spreadsheet. Some tools will save the output directly as a spreadsheet.
Nice question. I really had to think about it.
One thing you could do is change your SQL so that it only returns the narrowest usable columns.
e.g. (I'm not very hot on oracle syntax, but something similar should work):
select substring( convert(varchar(4), assigner_staff_id), 1, 4 ) as id,
active_flag as act, -- use shorter column name
-- etc.
from work where assigner_staff_id = '2096';
Does that make sense?
If you were doing this on unix/linux, I would suggest running it from the command line and piping it through an awk script.
If I've miss-understood, then please update your question and I'll have another go :)
If you don't have alot of rows returned I'll often use Tom Kytes print_table function.
SQL> set serveroutput on
SQL> execute print_table('select * from all_objects where rownum < 3');
OWNER : SYS
OBJECT_NAME : /1005bd30_LnkdConstant
SUBOBJECT_NAME :
OBJECT_ID : 27574
DATA_OBJECT_ID :
OBJECT_TYPE : JAVA CLASS
CREATED : 22-may-2008 11:41:13
LAST_DDL_TIME : 22-may-2008 11:41:13
TIMESTAMP : 2008-05-22:11:41:13
STATUS : VALID
TEMPORARY : N
GENERATED : N
SECONDARY : N
-----------------
OWNER : SYS
OBJECT_NAME : /10076b23_OraCustomDatumClosur
SUBOBJECT_NAME :
OBJECT_ID : 22390
DATA_OBJECT_ID :
OBJECT_TYPE : JAVA CLASS
CREATED : 22-may-2008 11:38:34
LAST_DDL_TIME : 22-may-2008 11:38:34
TIMESTAMP : 2008-05-22:11:38:34
STATUS : VALID
TEMPORARY : N
GENERATED : N
SECONDARY : N
-----------------
PL/SQL procedure successfully completed.
SQL>
If its lots of rows, i'll just do the query in SQL Developer and save as xls, businessy types love excel for some reason.
Why not just use the "cast" function?
select
(cast(assigner_staff_id as VARCHAR2(4)) AS STAFF_ID,
(cast(active_flag as VARCHAR2(1))) AS A,
(cast(assign_date as VARCHAR2(10))) AS ASSIGN_DATE,
(cast(COMPLETE_date as VARCHAR2(10))) AS COMPLETE_DATE,
(cast(mod_date as VARCHAR2(10))) AS MOD_DATE
from work where assigner_staff_id = '2096';