OraSetNull Function

Action

Assigns a NULL value to the program variable that is bound to the specified place holder in the SQL statement or PL/SQL block. The place holder is identified by the name or the number specified in the SQL statement or PL/SQL block. This function is used to assign values to both scalar and array program variables.

Include file

Ora.bdh

Syntax

OraSetNull( in cCursor : cursor,
            in sSqlVar : string,
            in nIndex  : number optional): boolean;

Return value

true if successful
false otherwise. In this case, you can use the OraOciError function to retrieve the Oracle OCI error code

Parameter	Description
cCursor	Cursor associated with a database connection
sSqlVar	Name of the place holder in the SQL statement or PL/SQL block. This parameter must include the preceding colon identifying it as a place holder
nIndex	Array index (optional). For array binding operations, this parameter specifies the array index of the program variable

Example

var
  hConnection : number;
  cCursor     : cursor;

dcltrans
  transaction TMain
  begin
    OraLogon(hConnection, "user", "password", "orclnet2");
    OraOpen(cCursor, hConnection);
    OraParse(cCursor, sqlInsert);
    OraBind(cCursor, ":name", SQLT_CHR, 32);
    OraBind(cCursor, ":age", SQLT_INT);
    OraSetString(cCursor, ":name", "Peter");
    OraSetNull(cCursor, ":age");
    OraExec(cCursor);
    OraClose(cCursor);
    OraLogoff(hConnection);
  end TMain;
dclsql
  sqlInsert:
    INSERT INTO persons (name, age) VALUES (:name, :age);