What is scalar and vector?
how to connect oracle in unix prompt?
In a table i have columns A,B,C and i have a composite index on columns A,B if so will the following query uses index or not? SELECT sal,name FROM <table_name> WHERE A=<value> AND B=<value> AND C=<value>;
How many subqueries can be nested in a statement?
What is data abstraction in sql?
What is sql query limit?
How much does sql certification cost?
declare lowerl number:= 1; upperl number:= 3; num varchar2(10); begin for i into lowerl..upperl loop num:=num||to_char(lowerl); if i=3 then upperl:=5; end loop; message(num); What will be the output ?
What type of database is cloud sql?
What is use of package in pl sql?
I want to display the employees who have joined in last two months. (It should be executed randomly means If I execute the query in March it should display Jan and Feb joined employees. Same query if i execute in Feb, 2007 it should display dec, 2006 and jan 2007 joined employees.
What is the purpose of a secondary key?
Regarding joins what are the differences you observed in oracle 9i and sql server?