oracle-sqldeveloper

问题 I don't know what the hotkey I accidentally clicked, but this «¶ looking sign appeared on every line of code, and there are grey dots instead of spaces in the code. How can I get rid of those characters? 回答1: Assuming this is SQL Developer, go to Tools->Preferences (or on Mac, find that under the SQL Developer menu). Expand the Code Editor section and click on Display. Untick "Show whitespace characters" (second checkbox in the list). You can check for defined shortcuts under Preferences, in

问题 Here is my query SELECT COUNT(C.SETID) FROM MYCUSTOMER C LEFT OUTER JOIN MYCUSTOPTION CO ON (C.SETID = CO.SETID AND C.CUST_ID = CO.CUST_ID AND CO.effdt = ( SELECT MAX(COI.EFFDT) FROM MYCUSTOPTION COI WHERE COI.SETID = CO.SETID AND COI.CUST_ID = CO.CUST_ID AND COI.EFFDT <=SYSDATE ) ) and here is the error message that I am getting.. What am I doing wrong??? 回答1: you can rewrite that by pushing the sub query so that its not outer joined: select Count(C.setid) from mycustomer C left outer join

问题 How to export clob field data's in oracle sql developer. Currently clob field data's can't export in oracle sql developer. 回答1: If you don't want to (or can't) export and import your data, and really want it as a set of insert statements, you can use SQL Developer's built-in formatting tools to automatically split your CLOBs into multiple chunks that are small enough to be valid as string literals, and then spool the result to a file: spool clob_export.sql select /*insert*/ * from your_table;

问题 I need to convert column into row for the below select column_name from all_tab_cols where table_name='TABLE_NAME' ; COLUMN_1 COLUMN_2 COLUMN_3 COLUMN_4 COLUMN_5 COLUMN_6 COLUMN_7 Tried using pivot operator/clause , i need to mention all the column names for the table if the table contain more number of column it wouldnt be possible to mention in the pivot function in in clause, select * from ( select column_name from all_tab_cols where table_name = 'TABLE_NAME' ) pivot ( min(column_name) for

问题 Can any one please help create or replace PROCEDURE greetings IS BEGIN dbms_output.put_line('Hello World!'); END; 回答1: There's no error for syntax, but if you ask for getting a result(to message with greeting) , apply serveroutput on before you execute your procedure : SQL> set serveroutput on; SQL> exec greetings; Hello World! PL/SQL procedure successfully completed. 来源： https://stackoverflow.com/questions/47180770/getting-an-error-while-executing-the-procedure-from-sql-developer

问题 I have used Python to parse a txt file for specific information (dates, $ amounts, lbs, etc) and now I want to export that data to an Oracle table that I made in SQL Developer. I have successfully connected Python to Oracle with the cx_Oracle module, but I am struggling to export or even print any data to my database from Python. I am not proficient at using SQL, I know of simple queries and that's about it. I have explored the Oracle docs and haven't found straightforward export commands.

问题 I have three columns in the table MYTABLE (ID, NUM, NAMES). There is a column NAMES. I need to check on NAMES column to see if the first name is JACK or BRUCE and the corresponding NUM column = 0. If the match is found, return 1 else 0. ID NUM NAMES 1 1 'TOM' 2 1 'MIKE' 3 0 'JACK' 4 1 'MICKY' 5 0 'BRUCE' I've came up with the following query: select * case NAMES in ('JACK', 'BRUCE') and NUM=0 then 1 else 0 end as MYNAMES from MYTABLE; That does not work unfortunately. 回答1: This works

问题 This is the frist time that I am going to use dbms_job.submit. The following piece of code doesn't work: declare i_job_no BINARY_INTEGER; begin dbms_job.submit(JOB => i_job_no, what => 'declare x number; begin x := f_threads(''my_program'', '|| 6058883 ||' , '|| 2 || '); end;', next_date => sysdate); dbms_output.put_line(i_job_no); end; but the same thing works fine with execute immediate. Can anyone help?! > declare i_job_no BINARY_INTEGER; begin execute immediate 'declare x number; begin x

问题 This is the frist time that I am going to use dbms_job.submit. The following piece of code doesn't work: declare i_job_no BINARY_INTEGER; begin dbms_job.submit(JOB => i_job_no, what => 'declare x number; begin x := f_threads(''my_program'', '|| 6058883 ||' , '|| 2 || '); end;', next_date => sysdate); dbms_output.put_line(i_job_no); end; but the same thing works fine with execute immediate. Can anyone help?! > declare i_job_no BINARY_INTEGER; begin execute immediate 'declare x number; begin x

问题 I am new to Oracle database and I wanted to create a database in Oracle. I followed this link to create a database: http://www.fehily.com/books/createdb/createdb_oracle_11g_2.html In Microsoft SQL Server, when we create a database, we use the create database command and the database creation is instantaneous [within fraction of seconds], but the Database Tool as described in link above took couple of minutes to create the database. Is database creation in Oracle this much slower? Searching