我有一个针对报告的客户端的过滤器，如果该人使用它所使用的过滤器客户端，否则它会忽略并带来所有客户端。 这是我的Where子句。
Where [S].ano_mes = @ano_mes OR @ano_mes IS NULL
AND S.cnpj = @cnpj or @cnpj is null
AND S.cod_produto = @cod_produto or @cod_produto is null
AND CASE WHEN (len(@cnpj) > 0) THEN
(S.CGC_Cliente +''-''+S.Seq_Cliente) in(SELECT cnpjseq FROM #Tb_CliSelecionados)
END
问题在于CASE WHEN部分，其余部分有效。
如果变量@cnpj的值为THEN，则应使用过滤器。
过滤器一起是CGC_CLIENTE和SEQ_CLIENTE。
表＃TB_CliSelecionados的参数为Concatenated equals，例如，带有别名S的表和#Tb_CliSelecionados具有＆＃39; 060746948041730-00＆＃39;
我在＆＃34; IN＆＃34;它说＆＃34; IN＆＃34;附近的语法不正确 在END中说错误的语法接近＆＃34; END＆＃34; .Expection＆＃34;）＆＃34;
有人知道在部分情况下我做错了什么？
答案 0 :(得分：1)
public class PageFragment extends Fragment implements SortDialogCallback {
private static final String TAG = PageFragment.class.getSimpleName();
/**
* Unsplash API, By Default=10
*/
private static final String per_page = "10";
public static String order_By;
/**
* Unsplash API call parameter, By Default=latest
* Change it in Pager Fragment, based on Tab tapped
*/
RecyclerView recyclerView;
ImageAdapter imageAdapter;
GridLayoutManager layoutManager;
EndlessRecyclerViewScrollListener scrollListener;
FloatingActionButton actionButton;
FrameLayout no_internet_container;
Bundle savedInstanceState;
// Attaching Handler to the main thread
Handler handler = new Handler();
boolean shouldHandlerRunAgain = true;
private ArrayList<DataModel> model;
/**
* Handler is attached to the Main Thread and it's message queue, because it is the one who created it.
* <p>
* Handler is responsible for checking every second that are we connected to internet, and if we are, then :-
* 1. Then we remove empty view
* 2. Make the network call
* 3. Stop handler from posting the code again using shouldHandlerRunAgain variable
* 3.1 This is a kill switch otherwise handler will post the runnable again and again to the message queue, which will be executed as soon as it reaches the looper
* <p>
* Handler removeCallbacks is used to remove all the pending runnables in the Message Queue
*/
Runnable job = new Runnable() {
@Override
public void run() {
Log.d(TAG, "Thread run " + job.hashCode());
swapViews();
if (shouldHandlerRunAgain)
handler.postDelayed(job, HANDLER_DELAY_TIME);
}
};
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putString("ORDER_BY", order_By);
}
@Override
public void onResume() {
super.onResume();
if (handler != null)
handler.post(job);
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d(TAG, "Starting Handler");
layoutManager = new GridLayoutManager(getContext(), 2);
scrollListener = new EndlessRecyclerViewScrollListener(layoutManager) {
public void onLoadMore(int page, int totalItemsCount, RecyclerView view) {
Log.w(TAG, "On load More Called with page number " + page);
loadDataUsingVolley(page, order_By);
}
};
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.search:
Toast.makeText(getContext(), "Async task", Toast.LENGTH_SHORT).show();
break;
default:
Toast.makeText(getContext(), "Invalid Options", Toast.LENGTH_SHORT).show();
}
return true;
}
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.menu_page_fragment, menu);
}
private void swapViews() {
if (detectConnection(getContext()) == false) {
recyclerView.setVisibility(View.INVISIBLE);
actionButton.setVisibility(View.INVISIBLE);
no_internet_container.setVisibility(View.VISIBLE);
} else {
Log.d(TAG, "Removing callbacks from handler and stopping it from posting");
shouldHandlerRunAgain = false;
handler.removeCallbacks(job, null);
handler = null;
recyclerView.setVisibility(View.VISIBLE);
actionButton.setVisibility(View.VISIBLE);
no_internet_container.setVisibility(View.INVISIBLE);
if (savedInstanceState != null) {
loadDataUsingVolley(1, savedInstanceState.getString("ORDER_BY"));
} else {
order_By = "latest";
loadDataUsingVolley(1, order_By);
}
}
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, final Bundle savedInstanceState) {
this.savedInstanceState = savedInstanceState;
View view = inflater.inflate(R.layout.fragment_page, container, false);
actionButton = (FloatingActionButton) view.findViewById(R.id.sort_button);
actionButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
SortDialog sortDialog = new SortDialog();
sortDialog.setTargetFragment(PageFragment.this, 911);
sortDialog.show(getChildFragmentManager(), "sortfragment");
}
});
recyclerView = (RecyclerView) view.findViewById(R.id.recyclerview);
recyclerView.setHasFixedSize(true);
no_internet_container = (FrameLayout) view.findViewById(R.id.no_internet_container);
return view;
}
void setUpRecyclerView() {
if (imageAdapter == null)
imageAdapter = new ImageAdapter(getContext(), (model==null)?new ArrayList<DataModel>():model);
recyclerView.setAdapter(imageAdapter);
recyclerView.setLayoutManager(layoutManager);
recyclerView.addOnScrollListener(scrollListener);
}
void loadDataUsingVolley(int page, String order_by) {
final ProgressDialog dialog = ProgressDialog.show(getContext(), "Wallser", "Loading");
RequestQueue requestQueue = Volley.newRequestQueue(getContext());
String URL = "https://api.unsplash.com/photos/?page=" + page + "&client_id=" + api_key + "&per_page=" + per_page + "&order_by=" + order_by;
Log.d(TAG, URL);
JsonArrayRequest objectRequest = new JsonArrayRequest(Request.Method.GET, URL, null, new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray array) {
int len = array.length();
if (model == null)
model = new ArrayList<>();
for (int i = 0; i < len; i++) {
try {
JSONObject object = array.getJSONObject(i);
String id = object.getString("id");
JSONObject object1 = object.getJSONObject("urls");
String imageURL = object1.getString("regular");
JSONObject object2 = object.getJSONObject("links");
String downloadURL = object2.getString("download");
model.add(new DataModel(imageURL, downloadURL, id));
Log.d(TAG, downloadURL);
} catch (JSONException e) {
e.printStackTrace();
}
}
if (dialog != null) {
dialog.dismiss();
}
Log.d(TAG, model.size() + "");
setUpRecyclerView();
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
dialog.dismiss();
Toast.makeText(getContext(), "" + error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
requestQueue.add(objectRequest);
}
/**
* marks a new network call to Unsplash API
* Thus, set model array list to null, to start fresh.
* as model is reset, ImageAdapter also needs to start fresh.
*
* @param order_by
*/
@Override
public void onDialogFinish(String order_by) {
model = null;
imageAdapter=null;
order_By = order_by;
loadDataUsingVolley(1, order_By);
}
}
返回一个表达式不是流量控制。
CASE答案 1 :(得分：1)
CASE WHEN子句不正确。它应该看起来像：
AND CASE
WHEN @cnpj IS NULL
THEN 1
WHEN (len(@cnpj) = 0)
THEN 1
WHEN (S.CGC_Cliente +''-''+S.Seq_Cliente) in (SELECT cnpjseq FROM #Tb_CliSelecionados
THEN 1
ELSE 0
END = 1
答案 2 :(得分：0)
您可以将该部分更改为
private void Form1_Load(object sender, EventArgs e)
{
var t = new DataTable();
var tc = t.Clone();
t.Columns.Add("C1");
t.Rows.Add("A");
t.Rows.Add("B");
t.Rows.Add("C");
t.Rows.Add("D");
t.Rows.Add("E");
currentBS.PositionChanged += (x, y) =>
{
if (currentBS.Position == 0)
previousBS.DataSource = tc;
else
{
previousBS.DataSource = t;
previousBS.Position = this.currentBS.Position - 1;
}
if (currentBS.Position == currentBS.Count - 1)
nextBS.DataSource = tc;
else
{
nextBS.DataSource = t;
nextBS.Position = this.currentBS.Position + 1;
}
};
previousBS.DataSource = tc;
nextBS.DataSource = tc;
currentBS.DataSource = t;
this.previousTextBox.DataBindings.Add("Text", previousBS, "C1");
this.currentTextBox.DataBindings.Add("Text", currentBS, "C1");
this.nextTextBox.DataBindings.Add("Text", nextBS, "C1");
}