What is a join query?
No Answer is Posted For this Question
Be the First to Post Answer
how is exception handling handled in mysql? : Sql dba
1) Synonyms 2) Co-related Subquery 3) Different Jobs in Plsql 4) Explain Plan 5) Wrap 6) Query Optimization Technique 7) Bulk Collect 8) Types of index 9) IF primary key is created then the index created ? 10) Foreign Key 11) Exception Handling 12) Difference Between Delete and Trunc 13) Procedure Overloading 14) Grant Revoke 15) Procedure Argument types. 16) Functions. 17) Joins
what are the type of locks ? : Sql dba
Write a unique difference between a function and a stored procedure.
how to give permission to users that users can update/insert/delete on a row of table on timeing 10am to 6pm only?
What is clause?
explain commit and rollback in mysql : sql dba
How can you tell the difference between an index and a view?
what is the difference between mysql_fetch_object and mysql_fetch_array? : Sql dba
What is a stored procedure in sql with example?
Hi Guys, I have a situation where I need to access the column values from rowtype variable. However, the column names are dynamic. below is sample code: declare Cursor c1 is select * from emp; Cursor c2 is select column_name from xyztable; v_c2 c2%rowtype; v_str varchar2 v_value varchar2(200); begin for rec in c1 loop open c2;---this cursor has column names like EMPLOYEE_ID, FIRST_NAME, LAST_NAME etc. loop fetch c2 into v_c2; exit when c2%notfound; /* now lets say i want to access value of LAST_NAME from cursor c1, so I am writing below code, however it does not work as expected */ v_str:= 'rec.'|| v_c2.column_name; -- this will give me string like "rec.EMPLOYEE_ID" v_value:=v_str; end loop; end loop; end; / Plz help ASAP.Thanks.
Which is faster union or join?