 Related Questions TABLESVIEWSINDEXESSYNONYMSSEQUENCESTABLESPACES etc Latest Answer : In Oracle DB Objects are Table View Indexes Sequences Used to generate primary key values Synonym ... Rename is a permanent name given to a table or column whereas Alias is a temporary name given to a table or column which do not exist once the SQL statement is executed. Latest Answer : Rename means give the new name to existed objects alise is use to refrence to objects ... SELECTCONNECTRESOURCES Latest Answer : objectes privileges such asselect,delete,update,connect ... SQL*PLUS is a command line tool where as SQL and PL/SQL language interface and reporting tool. Its a command line tool that allows user to type SQL commands to be executed directly against an Oracle database. Latest Answer : SQL keywords cannot be abbrevated but SQL*PLUS keywords can be abbrevated. ... LONG RAW data type is used for storing BLOB's (binary large objects). Latest Answer : Hi,BLOB is generally used to store pictures. It stands for Binary Large Object. The maximum storage limit is 4GB. There is also one limitation using BLOB, you can have only one column of type BLOB.Cheers,Tarun ... delete from table_name where rowid not in (select max(rowid) from table group by duplicate_values_field_name); ordelete duplicate_values_field_name dv from table_name ta where rowid Latest Answer : Delete table_name t1where rowid>(select rowid from table_name t2)and t1.column1=t2.column1 ... HAVING clause is used when you want to specify a condition for a group function and it is written after GROUP BY clause. The WHERE clause is used when you want to specify a condition for columns, single Latest Answer : when query is based on condition we use where clause & there is no any aggregate functionwhen query is base on contion & aggregate function has to be use then we can usehaving clause. ... SELECT * FROM empWhere emp_no+' '=12345;i.e you have to concatenate the column name with space within codes in the where condition.SELECT /*+ FULL(a) */ ename, emp_no from empwhere emp_no=1234;i.e Latest Answer : One way is to diable the index on the column using syntaxAlter index indexname on table_name disable.One way is to apply /*+no_index */ hint to the query For eg: select ename /*+no_index */from empwhere ename ='smith' ... It is a column that is not an actual column in the table.eg USER, UID, SYSDATE, ROWNUM, ROWID, NULL, AND LEVEL. Latest Answer : Pseudo columns is not actula column in the table. it behaves like table columnwe can retivesv values of pseduo column but can not insert,update or delete value in that.has two data type 1. rowid 2. urowidrow id uniqely identify row in databaseEXM ... Suppose a customer table is having different columns like customer no, payments.What will be the query to select top three max payments? SELECT customer_no, payments from customer C1WHERE 3
Sponsored Links
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
