I'm trying to use a function, JSON_ARRAY_LENGTH(), in my Sequelize query:
MyModel.query({
where: sequelize.where(
sequelize.fn('JSON_ARRAY_LENGTH', sequelize.col('cues')),
0
)
});
This doesn't seem to work. It generates a bad query:
SELECT id, title, /* etc. etc. */
FROM MyModel
WHERE
`MyModel`.`attribute` = JSON_ARRAY_LENGTH(`cues)` AND
`MyModel`.`comparator` = '=' AND
`MyModel`.`logic` = 0;
What is all this attribute, comparator, and logic stuff, and how do I turn it off?
The documentation seems to support what I'm doing. Its example:
Post.findAll({
where: sequelize.where(sequelize.fn('char_length', sequelize.col('status')), 6)
});
// SELECT * FROM post WHERE char_length(status) = 6;
Any ideas would be most appreciated. Thanks!
It seems I've stumbled on a bug:
https://github.com/sequelize/sequelize/issues/6440
This has been fixed in more recent builds:
https://github.com/sequelize/sequelize/pull/9730/commits/3b2972db2c494c8a4118a7e6c16aad0fc2e0eebe
The workaround around for now was to wrap my query with AND:
MyModel.query({
where: {
[sequelize.Op.and]: sequelize.where(
sequelize.fn('JSON_ARRAY_LENGTH', sequelize.col('cues')),
0
)
}
});
Related
Hi all I am a bit stumped it seems after the latest update to wordpress this function has stopped working. Any ideas would be gratefully received . . .
First snippet gets the parameter "we" and should then auto fill the form field id #input_2_4 after making some calculations.
`<script>
$.urlParam = function (name) {
var results = new RegExp('[\?&]' + name + '=([^&#]*)')
.exec(window.location.href);
return results[1] || 0;
}
var we = parseInt( $.urlParam('we') );
$('#input_2_4').val( '£' + (we * 0.1450).toFixed(2));
</script>`
Everything seems present in the url string including &we=1685 value but field #input_3_4 is now blank.
Link
I'd try it like below to remove any $ issues. Console.log should let you know if the issue is in getting the URL parameters. You may need to look at enqueueing the script as well to make sure it's getting loaded in the proper order.
jQuery.urlParam = function (name) {
var results = new RegExp('[\?&]' + name + '=([^&#]*)')
.exec(window.location.href);
console.log(window.location.href)
console.log(results[1] || 0);
return results[1] || 0;
}
var we = parseInt( jQuery.urlParam('we') );
jQuery('#input_2_4').val( '£' + (we * 0.1450).toFixed(2));
Hi I use the matteodem:easy-search package for Meteor. Right now I am chunking my results into groups of size
Template.UserList.helpers({
users: function () {
all = Meteor.users.find().fetch();
chunks = [];
size = 3;
while (all.length > size) {
chunks.push({ row: all.slice(0, size)});
all = all.slice(size);
}
chunks.push({row: all});
return chunks;
}
});
and it works like a charme, but now I want to know how to do this with
{{#EasySearch.Each index=playersIndex }}
since you can't split the Index. Anyone have an idea to get EasySearch.Each work with Bootstrap row?
thanks.
Looking at what EasySearch.Each does (https://github.com/matteodem/meteor-easy-search/blob/master/packages/easysearch:components/lib/each/each.js) it seems that you can just use
index.getComponentMethods().getCursor()
once you've created your index, i.e., just replace your find call with the above and it might work.
I decided to test sqlite db for my Qt application.
I have created the sqlite db file with the proper statements (create table etc. and Inserted some rows of data).
My problem is that when I execute a select statement I don't get any records.
This is the code I use:
qq.sprintf("SELECT * from descriptors WHERE descriptors.id=%d ",idx);
query.exec(qq);
if( query.isSelect() ){
while (query.next()){
int fff = query.value(0).toInt();
}}
The problem is that I never get inside the while loop. query.next() doesn't seem to work.
any hints?
thanks in advance,
Thodoris
p.s. I forgot to write my configuration so: Qt 4.7.3, windows 7, visual studio 2008
Other than the mistake hexa posted, query.isSelect() will always return true even if the query failed. You need to check the result of exec():
QSqlQuery query;
query.prepare( "SELECT * FROM descriptors WHERE id = ?" );
query.bindValue( 0, idx ); // assuming idx is an integer/long/QVariant value
if( !query.exec() )
{
// Error Handling, check query.lastError(), probably return
}
// Note: if you don't return in case of an error, put this into the else{} part
while( query.next() )
{
int fff = query.value( 0 ).toInt();
}
In my case, backward iteration over QSqlQueries worked. I think this could be a bug somewhere in the QSQLite Driver implementation.
QSqlQuery q = db.exec("SELECT * FROM Table");
if (q.last()) {
do {
// Do something with row...
} while (q.previous());
}
I am porting over some Java code into Google's Go language and I converting all code except I am stuck on just one part after an amazingly smooth port. My Go code looks like this and the section I am talking about is commented out:
func main() {
var puzzleHistory * vector.Vector;
puzzleHistory = vector.New(0);
var puzzle PegPuzzle;
puzzle.InitPegPuzzle(3,2);
puzzleHistory.Push(puzzle);
var copyPuzzle PegPuzzle;
var currentPuzzle PegPuzzle;
currentPuzzle = puzzleHistory.At(0).(PegPuzzle);
isDone := false;
for !isDone {
currentPuzzle = puzzleHistory.At(0).(PegPuzzle);
currentPuzzle.findAllValidMoves();
for i := 0; i < currentPuzzle.validMoves.Len(); i++ {
copyPuzzle.NewPegPuzzle(currentPuzzle.holes, currentPuzzle.movesAlreadyDone);
copyPuzzle.doMove(currentPuzzle.validMoves.At(i).(Move));
// There is no function in Go's Vector that will remove an element like Java's Vector
//puzzleHistory.removeElement(currentPuzzle);
copyPuzzle.findAllValidMoves();
if copyPuzzle.validMoves.Len() != 0 {
puzzleHistory.Push(copyPuzzle);
}
if copyPuzzle.isSolutionPuzzle() {
fmt.Printf("Puzzle Solved");
copyPuzzle.show();
isDone = true;
}
}
}
}
If there is no version available, which I believe there isn't ... does anyone know how I would go about implementing such a thing on my own?
How about Vector.Delete( i ) ?
Right now Go doesn't support generic equality operators. So you'll have to write something that iterates over the vector and removes the correct one.
I'm trying to use Storage mechanism in Mozilla platform (in thundebird 3.0).
The following code is used after each test to erase the table present in the database:
function tearDown()
{
let database = new Database();
let req1 = "SELECT name FROM sqlite_master WHERE type='table'";
let statement = database.connection.createStatement(req1);
let tables = [];
while(statement.executeStep()) {
tables.push(statement.row.name);
}
statement.reset();
for(table in tables) {
let req2 = "DROP TABLE " + tables[table];
database.connection.executeSimpleSQL(req2);
}
}
But I've an error during executeSimpleSQL of req2 (NS_ERROR_FILE_IS_LOCKED), It seems that SQLite doesn't release the lock from the first statement. I've tried reset(), finalize(), but nothing works. How can I properly release the lock of the first statement?
Answering myself: I forgot to release a previous statement in previous code of my application.
Final story: when you use
statement.executeStep()
Check:
be sure that the last call of this statement return false
or never forgot to release it:
statement.reset();
var statement = dbConn.createStatement("SELECT COUNT(name) AS nameOcurrences FROM Table1 WHERE name = '" + aName + "';");
var occurrences;
while(statement.executeStep()) {
occurrences = statement.row.nameOcurrences;
}