sqlplus

I have some queries to find out the ddl of some objects from a schema. The result columns I am getting are truncated in the middle of the queries. How can I increase the width of the column? I tried with SET SERVEROUTPUT ON SIZE 1000000; SET LINESIZE 50000; set pagesize 50000; set long 50000; But I'm still getting the same result. I've just used the following command: SET LIN[ESIZE] 200 (from http://ss64.com/ora/syntax-sqlplus-set.html ). EDIT: For clarity, valid commands are SET LIN 200 or SET LINESIZE 200 . This works fine, but you have to ensure your console window is wide enough. If you're

I encountered this question in an interview and had no clue how to answer: There is a table which has a index on a column, and you query: select * from table_name where column_having_index="some value"; The query takes too long, and you find out that the index is not being used. If you think the performance of the query will be better using the index, how could you force the query to use the index? Rene You can use optimizer hints select /*+ INDEX(table_name index_name) */ from table etc... More on using optimizer hints: http://download.oracle.com/docs/cd/B19306_01/server.102/b14211/hintsref

Okay guys here is the question. I have to list the department ID, department name, count of sales reps, and average commission rate for each department. Also I need to Group by department, and sort by average commission rate in ascending order. I am receiving an error at line 1 under the De.Dept_ID saying that is not a group by expression Here is my code: SELECT DE.Dept_ID as DeptID, Dept_Name as DeptName, COUNT(SR.Sales_Rep_ID) as SalesRepCount, Comm_Rate as AvgCommRate FROM DEPT_arb DE, SALES_REP_arb SR, COMMISSION_arb C WHERE DE.Dept_ID = SR.Dept_ID AND Comm_Rate = (SELECT AVG(Comm_Rate)

I'm a beginner in PL/SQL, I'm trying some sql script but sometimes I have an error in my script and the prompt doesn't appear; I remain in input mode. How can I retrieve the prompt without shutting down the terminal? (p.s.: I used sql plus for oracle 11g under Ubuntu OS) From the documentation SQL*Plus treats PL/SQL subprograms in the same manner as SQL commands, except that a semicolon (;) or a blank line does not terminate and execute a block. Terminate PL/SQL subprograms by entering a period (.) by itself on a new line. You can also terminate and execute a PL/SQL subprogram by entering a