Databases Interview Questions
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How to create lov dynamically in oracle forms which is data comes from database procedure of out parameter, data will will out parameter of procedure base

1 1086

create or replace procedure search_matter(empno varchar2) as sql_stmt varchar2(200); stmt varchar2(200); v_table_name varchar2(200); val_pres number; inp_value varchar2(200); type obj_typ is table of cols.column_name%type index by binary_integer; type all_col is table of varchar2(100) index by binary_integer; typ_obj_typ obj_typ; typ_all_col all_col; begin select object_name bulk collect into typ_obj_typ from user_tables,user_objects where table_name = object_name AND object_type = 'TABLE'; select empno into inp_value from dual; dbms_output.put_line('inp value : '||inp_value); for i in typ_obj_typ.first..typ_obj_typ.last loop v_table_name := NULL; v_table_name := typ_obj_typ(i); dbms_output.put_line(i||':'||typ_obj_typ(i)); dbms_output.put_line('....................'); sql_stmt := 'select column_name from cols where table_name = :1 and data_type in (''CHAR'', ''VARCHAR2'', ''NCHAR'', ''NVARCHAR2'',''NUMBER'')'; EXECUTE IMMEDIATE sql_stmt bulk collect into typ_all_col using typ_obj_typ(i); for inside in typ_all_col.first..typ_all_col.last loop dbms_output.put_line('sql stmt: '||sql_stmt); dbms_output.put_line('column name: '||typ_all_col(inside)||'table name: '||typ_obj_typ(i)); stmt := 'select count(*) from ||typ_obj_typ(i)||'; EXECUTE_IMMEDIATE stmt into val_pres ; if val_pres = 1 then dbms_output.put_line('value present col name: '||typ_all_col(inside)||'table name :'||typ_obj_typ(i)); end if; end loop; dbms_output.put_line('....................'); end loop; exception when others then dbms_output.put_line('sql code '||sqlcode||'Table name: '||v_table_name); dbms_output.put_line('sql message '||sqlerrm); end; Compile-time I am getting below error, Plz help to resolve. LINE/COL ERROR -------- ----------------------------------------------------------------- 47/23 PLS-00103: Encountered the symbol "STMT" when expecting one of the following: := . ( @ % ;

739

table a has records 1,1,1,1 table b has records 1,1,1,1,1,1 what would be out if perform join for all cases

951

Sql technical questions

889

What is view? Can we update view

997

What is materialized view. What are different methods of refresh?

995

What if we write return in procedure?

909

what is cursor. write example of it. What are the attributes of cursor.

875

How to handle bulk data?

996

What is the difference between Union and Union all. Which is faster.

984

What are the steps for performance tuning.

969

What is parallel hint?

866

What is the difference between SQL and NoSQL databases

1 369

What is a primary key, and how is it different from a unique key?

1 335

How do you retrieve the second highest salary from a table?

1 320


Un-Answered Questions { Databases }

How to execute stored procedure and set temp table in sql server?

651


Give any 6 data types of MongoDB?

5


What are various aggregate functions that are available?

616


How to create a new oracle data file?

672


Which is better trigger or stored procedure?

617






What ports does postgresql use?

560


Is microsoft access part of office?

541


How many rows can mysql hold?

584


Why do we use subquery?

634


What happen when an index does not fit into ram?

5


Discuss transparent DBMS?

856


Why do we need unique key in a table?

629


What are the operating modes in which database mirroring runs? : sql server DBA

759


How can you find your id on a system?

362


what is grd?

757