EXECUTE IMMEDIATE SQLStatement;;;;;{USING TransactionObject} ;
eg:
string;;;;Mysql
Mysql = "CREATE TABLE Employee "&
;;;;+"(emp_id integer not null,"&
;;;;+"dept_id integer not null, "&
;;;;+"emp_fname char(10) not null, "&
;;;;+"emp_lname char(20) not null)"
EXECUTE IMMEDIATE :Mysql ;
2.Dynamic SQL Format 2
PREPARE DynamicStagingArea FROM SQLStatement;;;;;{USING TransactionObject} ;
EXECUTE DynamicStagingArea USING {ParameterList} ;
eg:
INTEmp_id_var = 56
PREPARE SQLSA
;;;;FROM "DELETE FROM employee WHERE emp_id=?" ;
EXECUTE SQLSA USING :Emp_id_var ;
3.Dynamic SQL Format 3
DECLARE Cursor | Procedure;;;;;DYNAMIC CURSOR | PROCEDURE;;;;;;FOR DynamicStagingArea ;
PREPARE DynamicStagingArea FROM SQLStatement;;;;;{USING TransactionObject} ;
OPEN DYNAMIC Cursor;;;;;{USING ParameterList} ;
EXECUTE DYNAMIC Procedure;;;;{USING ParameterList} ;
FETCH Cursor | Procedure;;;;;INTO HostVariableList ;
CLOSE Cursor | Procedure ;
eg:
integer Emp_id_var
DECLARE my_cursor DYNAMIC CURSOR FOR SQLSA ;
PREPARE SQLSA FROM "SELECT emp_id FROM employee" ;
OPEN DYNAMIC my_cursor ;
FETCH my_cursor INTO :Emp_id_var ;
CLOSE my_cursor ;
4.Dynamic SQL Format 4
DECLARE Cursor | Procedure;;;;;DYNAMIC CURSOR | PROCEDURE;;;;;;FOR DynamicStagingArea ;
PREPARE DynamicStagingArea FROM SQLStatement;;;;{USING TransactionObject} ;
DESCRIBE DynamicStagingArea;;;;INTO DynamicDescriptionArea ;
OPEN DYNAMIC Cursor | Procedure;;;;USING DESCRIPTOR DynamicDescriptionArea ;
EXECUTE DYNAMIC Cursor | Procedure;;;;USING DESCRIPTOR DynamicDescriptionArea ;
FETCH Cursor | Procedure;;;;;USING DESCRIPTOR DynamicDescriptionArea ;
CLOSE Cursor | Procedure ;
eg:
string Stringvar, Sqlstatement
integer Intvar
Sqlstatement = "SELECT emp_id FROM employee"
PREPARE SQLSA FROM :Sqlstatement ;
DESCRIBE SQLSA INTO SQLDA ;
DECLARE my_cursor DYNAMIC CURSOR FOR SQLSA ;
OPEN DYNAMIC my_cursor USING DESCRIPTOR SQLDA ;
FETCH my_cursor USING DESCRIPTOR SQLDA ;
// If the FETCH is successful, the output
// descriptor array will contain returned
// values from the first row of the result set.
// SQLDA.NumOutputs contains the number of
// output descriptors.
// The SQLDA.OutParmType array will contain
// NumOutput entries and each entry will contain
// an value of the enumerated data type ParmType
// (such as TypeInteger!, or TypeString!).
CHOOSE CASE SQLDA.OutParmType[1]
CASE TypeString!
Stringvar = GetDynamicString(SQLDA, 1)
;;;;CASE TypeInteger!
Intvar = GetDynamicNumber(SQLDA, 1)
END CHOOSE
CLOSE my_cursor ;
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