Get Cursor command

The Get Cursor command creates a cursor with the name of the specified Identifier by issuing a java.sql.Statement.executeQuery request on the value of the specified String.

If the String is a statement that does not generate a result set, the behavior of the underlying database determines whether an empty result set or an error is issued. If there is an error in executing the statement, no cursor is created.

ij sets the cursor name using a java.sql.Statement.setCursorName request. Behavior with respect to duplicate cursor names is controlled by the underlying database. Derby does not allow multiple open cursors with the same name.

Once a cursor has been created, you can use ij's Next and Close commands to step through its rows and (if the connection supports positioned update and delete commands) to alter the rows.


GET [ WITH { HOLD | NOHOLD } ] CURSOR Identifier AS String

WITH HOLD is the default attribute of the cursor. For a non-holdable cursor, use the WITH NOHOLD option.


ij> -- autocommit needs to be off so that the positioned update
ij> -- can see the cursor it operates against. 
ij> autocommit off;
ij> get cursor menuCursor as
ij> next menuCursor;
COURSE    |ITEM                |PRICE          
entree    |lamb chop           |14             
ij> next menuCursor;
COURSE    |ITEM                |PRICE          
dessert   |creme brulee        |6              
ij> UPDATE menu SET price=price+1 WHERE CURRENT OF menuCursor;
1 row inserted/updated/deleted
ij> next menuCursor;
COURSE    |ITEM                |PRICE          
appetizer |baby greens salad   |7              
ij> close menuCursor;
ij> commit;
ij> connect 'jdbc:derby:memory:dummy;create=true;user=john'
    as john_conn;
ij> create table john_tbl(c int);
0 rows inserted/updated/deleted
ij> insert into john_tbl values(1),(2),(3);
3 rows inserted/updated/deleted
ij> connect 'jdbc:derby:memory:dummy;user=fred' as fred_conn;
ij(FRED_CONN)> get cursor john_cursor@john_conn
    as 'select * from john_tbl';
ij(FRED_CONN)> next john_cursor@john_conn;
ij(FRED_CONN)> next john_cursor@john_conn;
ij(FRED_CONN)> next john_cursor@john_conn;
ij(FRED_CONN)> next john_cursor@john_conn;
No current row
ij(FRED_CONN)> close john_cursor@john_conn;
ij(FRED_CONN)> disconnect all;
Related concepts
ij commands
ij errors
Related reference
Absolute command
After Last command
Async command
Autocommit command
Before First command
Close command
Commit command
Connect command
Describe command
Disconnect command
Driver command
Elapsedtime command
Execute command
Exit command
First command
Get Scroll Insensitive Cursor command
Help command
HoldForConnection command
Last command
LocalizedDisplay command
MaximumDisplayWidth command
Next command
NoHoldForConnection command
Prepare command
Previous command
Protocol command
Readonly command
Relative command
Remove command
Rollback command
Run command
Set Connection command
Show command
Wait For command
Syntax for comments in ij commands
Syntax for identifiers in ij commands
Syntax for strings in ij commands