Updating record from cursor oracle dating girl pretty
Because this is defined in line 2, the record defined in line 4 can now use it.Cursor variables that are weakly typed can be defined to return any values.Even though the example cursor variable is defined, the record can not use it because the cursor variable return type is not defined.
SQL declare 2 type auth_cursor is ref cursor; 3 c1 auth_cursor; 4 r_c1 c1%rowtype; 5 begin 6 null; 7 end; 8 / r_c1 c1%rowtype; * ERROR at line 4: ORA-06550: line 4, column 8: PLS-00320: the declaration of the type of this expression is incomplete or malformed ORA-06550: line 4, column 8: PL/SQL: Item ignored However, a strongly typed cursor can use the cursor variable to define the cursor record.
SQL declare 2 type auth_cursor is ref cursor return author%rowtype; 3 c1 auth_cursor; 4 r_c1 c1%rowtype; 5 begin 6 null; 7 end; 8 / In this example, the auth_cursor type returns an author%rowtype.
The cursor variable is returning all columns in the book table, but the receiving variable is defined as a record of columns from the author table.
SQL declare 2 type auth_cursor is ref cursor; 3 c1 auth_cursor; 4 r_c1 author%rowtype; 5 begin 6 open c1 for select * from book; 7 fetch c1 into r_c1; 8 close c1; 9 end; 10 / declare * ERROR at line 1: ORA-06504: PL/SQL: Return types of Result Set variables or query do not match ORA-06512: at line 7 Notice that the error message is pointing to the DECLARE clause.
SQL declare 2 type auth_cursor is ref cursor; 3 c1 auth_cursor; 4 r_c1 author%rowtype; 5 begin 6 open c1 for select * from author; 7 fetch c1 into r_c1; 8 if c1%isopen then 9 dbms_output.put_line('The Cursor is open.'); 10 end if; 11 dbms_output.put_line('Row Count is '||c1%rowcount); 12 close c1; 13 if not c1%isopen then 14 dbms_output.put_line('The Cursor is closed.'); 15 end if; 16 end; 17 / The Cursor is open. Here some of the cursor attributes are used to process the cursor.
Notice that the record used to hold a fetched cursor row is defined as an author table "%rowtype".In the example below, the cursor variable c1 is defined as three different statements.SQL declare 2 type auth_cursor is ref cursor; 3 c1 auth_cursor; 4 r_c1 author%rowtype; 5 r2_c1 book%rowtype; 6 r3_c1 number; 7 begin 8 open c1 for select * from author; 9 fetch c1 into r_c1; 10 close c1; 11 open c1 for select * from book; 12 fetch c1 into r2_c1; 13 close c1; 14 open c1 for select sum(quantity) 15 from store join sales using (store_key) 16 group by store_name; 17 fetch c1 into r3_c1; 18 close c1; 19 end; 20 / Although the block does not do anything but open and close the cursor variable, it does demonstrate that weakly typed variables can be defined differently each time the variable is opened.So far the examples have been using the cursor variables as regular cursors.The real advantage of using a cursor variable is the ability to pass it as a parameter.It allows a user to pass this "reference to the same cursor" among all the programs that need access to the cursor.Tags: Adult Dating, affair dating, sex dating