// Execute a query with 1 or more parameters.
func (c *libpqConn) execParams(cmd string, args []driver.Value) (driver.Result, error) {
// convert args into C array-of-strings
cargs, err := buildCArgs(args)
if err != nil {
return nil, err
}
defer returnCharArrayToPool(len(args), cargs)
ccmd := C.CString(cmd)
defer C.free(unsafe.Pointer(ccmd))
// execute
cres := C.PQexecParams(c.db, ccmd, C.int(len(args)), nil, cargs, nil, nil, 0)
defer C.PQclear(cres)
if err = resultError(cres); err != nil {
return nil, err
}
// get modified rows
nrows, err := getNumRows(cres)
if err != nil {
return nil, err
}
return libpqResult(nrows), nil
}
func (c *driverConn) exec(stmt string, args []driver.Value) (cres *C.PGresult) {
stmtstr := C.CString(stmt)
defer C.free(unsafe.Pointer(stmtstr))
if len(args) == 0 {
cres = C.PQexec(c.db, stmtstr)
} else {
cargs := buildCArgs(args)
defer C.freeCharArray(cargs, C.int(len(args)))
cres = C.PQexecParams(c.db, stmtstr, C.int(len(args)), nil, cargs, nil, nil, 0)
}
return cres
}
func (c *Conn) exec(stmt string, params ...interface{}) (cres *C.PGresult) {
stmtstr := C.CString(stmt)
defer C.free(unsafe.Pointer(stmtstr))
if len(params) == 0 {
cres = C.PQexec(c.db, stmtstr)
} else {
cparams := buildCArgs(params...)
defer C.freeCharArray(cparams, C.int(len(params)))
cres = C.PQexecParams(c.db, stmtstr, C.int(len(params)), nil, cparams, nil, nil, 0)
}
return cres
}