How can I implement the below query using pdo notorm?
mysql_query("DELETE FROM table WHERE (down-up)>=some value AND id=$id");
I know the below statement will delete the selected row with id of value $id. But I am confused on, how can I check the condition, (down-up)>=some value in my delete statement.
$row = $db->table[$id];
$affected = $row->delete();
Please help me out.
Try this
$notORM->tablename("id", $id)->where("down-up >= value")->delete();
I haven't tested it, let me know if you have any issues.
Related
I've just started using microsoft access so I don't really know how to solve this. I would like to use an update query to add a value from a form to a value on a table.
I originally used the SUM expression which gave me an error saying it was an aggregate function.
I also tried to add the two values together (e.g [field1] + [field2]) which as a result gave me a value with both numbers together instead of adding them together.
The following is the SQL I'm using:
UPDATE Votes
SET Votes.NumVotes = [Votes]![NumVotes]+[Forms]![frmVote]![txtnumvotes]
WHERE (((Votes.ActID) = [Forms]![frmVote]![combacts])
AND ((Votes.RoundNum) = [Forms]![frmVote]![combrndnum]))
I want to add a value [txtnumvotes] a form to a field [NumVotes] from the table [Votes].
Could someone please help me?
You can specify the expected data type with parameters:
PARAMETERS
[Forms]![frmVote]![txtnumvotes] Short,
[Forms]![frmVote]![combacts] Long,
[Forms]![frmVote]![combrndnum] Long;
UPDATE
Votes
SET
Votes.NumVotes = [Votes]![NumVotes]+[Forms]![frmVote]![txtnumvotes]
WHERE
(((Votes.ActID) = [Forms]![frmVote]![combacts])
AND
((Votes.RoundNum) = [Forms]![frmVote]![combrndnum]))
Without the specification, Access has to guess, and that sometimes fails.
I have a table with multiple column and I want to return a column name using another column name as search criteria. How do I achieve this in yii2?
Below is sample code, normal sql should be:
$name = SELECT type_name FROM ProductTable WHERE type_id = 1;
echo $name;
This should return the value of the column type_name where the value of the column type_id equals 1. I tried this, but it doesn't work
$type_name = ProductTable::find()->where(['type_id' =>$model->type_id]);
$type_name = Product::find(['type_name'])->where(['type_id' =>$model->type_id]);
I also tried this, but I guess it was wrong
I hope my question is clear enough and any help will he appreciated
and u could also use createCommand!
$name = \Yii::$app->getDb()->createCommand("SELECT type_name FROM ProductTable WHERE type_id=:typeId", ['typeId'=>$model->type_id])->queryAll();
For a general introduction to Yii2's ActiveRecord, see the guide: http://www.yiiframework.com/doc-2.0/guide-db-active-record.html
If you want the complete row and have a model, you're just missing a one():
Product::find()->where(['type_id' =>$model->type_id])->one();
If you do have a Model defined and just want a single value, try:
Product::find()->select('type_name')->where(['type_id' =>$model->type_id])->scalar();
Which basically generates an ActiveQuery via the model, and changes it to return only the first column in the first row of matched results.
If you do NOT have a model, you could also generate a normal query without ActiveRecord usage (http://www.yiiframework.com/doc-2.0/yii-db-query.html)
$name = (new Query())->select('type_name')
->from('ProductTable')
->where(['type_id' =>$model->type_id])
->scalar();
I assume you generated ProductTable by using Gii module.
Also, if type_id column is a primary key:
$product = ProductTable::findOne($model->type_id);
if($product !== null) { $product->typeName /*... read value ...*/}
or to get all records
$products = ProductTable::findAll($model->type_id); //match all records.
for any other column use the following syntax instead:
$product = ProductTable::findOne(['type_id' => $model->type_id]);
Use following code to get type_name
$PTable=ProductTable::find()->select('type_name')->where(['type_id' =>$model->type_id])->one();
echo $PTable->type_name;
I'm having trouble with this Oracle Merge query.
merge into NEW_DOCTORS NP
USING OLD_DOCTORS MD
on (MD.SSN=NP.SSN OR MD.NPI=NP.NPI OR MD.PIN=NP.PIN)
WHEN MATCHED THEN
UPDATE SET
NP.othervalues=MD.othervalues
NP.PIN/SSN/NPI=MD.PIN/SSN/NPI (**update two of these three that did not return TRUE in the above ON condition)
WHEN NOT MATCHED THEN
insert(NP.SSN,NP.NPI,NP.PIN,NP.other_values)
values(MD.SSN,MD.NPI,MD.PIN,MD.other_values)
Is this possible? Thanks!
EDIT: I'm asking because I read somewhere that fields that are in the ON condition can't be updated. However I'm not sure if the author was talking only in context of the field that evaluates true or for all fields. I'm hoping there's someone who might have an idea about this, as well as any workarounds.
You can use CASE WHEN ... :
UPDATE SET
NP.othervalues=MD.othervalues
,NP.PIN = CASE WHEN (MD.SSN=NP.SSN OR MD.NPI=NP.NPI) THEN MD.PIN ELSE NP.PIN END
,--add here the 2 others
This means, when you have MD.SSN=NP.SSN OR MD.NPI=NP.NPI true, then update NP.PIN with MD.PIN else let the same value NP.PIN
Or you can do 3 differents MERGE, so it will be more readable.
EDIT
Thinking about it, if you update only when this is not the same value (cause it will join only on same value) you can directly update them with the MD table value.
Do that :
NP.othervalues=MD.othervalues
,NP.PIN=MD.PIN
,NP.SSN=MD.SSN
,NP.NPI=MD.NPI
If they match, the update will keep same value, if not it will update the value.
As the official documentation does not say how to do a simply "num_rows" with their system, i need some help here: How to get the amount of rows in the result set ?
Assuming:
$connection=Yii::app()->db;
$command=$connection->createCommand($sql);
This will work for insert, update and delete:
$rowCount=$command->execute();
execute(): performs a non-query SQL statement, such as INSERT, UPDATE and DELETE. If successful, it returns the number of rows that are affected by the execution.
For select, you could do the following:
$dataReader=$command->query();
This generates the CDbDataReader instance and CDbDataReader provides a rowCount property
http://www.yiiframework.com/doc/api/1.1/CDbDataReader#rowCount-detail
$rowCount = $dataReader->rowCount;
About rowCount => Returns the number of rows in the result set. Note, most DBMS may not give a meaningful count. In this case, use "SELECT COUNT(*) FROM tableName" to obtain the number of rows.
ActiveRecord has count method which can be used.
$cntCriteria = new CDbCriteria();
$cntCriteria->condition = "categoryId = :categoryId";
$cntCriteria->params[':categoryId'] = $categoryRow->categoryId;
$articleCount = Article::model()->count($cntCriteria);
There is one more way to do this. When we execute a sql query it will return the result as array only. So we can able get the count of the rows using count() function like below.
$output=User::model()->findAllBySql("select * from user");//User is a model belongs to the user table
$count_val=count($output);//$count_val has the value of number of rows in the output.
First of all, I know there are already questions and answers about it, this thread being the one that is closest to what I need:
SQL Update to the SUM of its joined values
However, I get a syntax error (operator missing) that seems to occur close to the FROM clause. However I can't see it. Does it not like the FROM itself ? I am not used to using FROM in an update statement but it seems like it's valid from the QA I just linked :|
Any idea why there would be a syntax error there ?
I am using Access 2007 SP3.
Edit:
Wow, I forgot to post the query...
UPDATE r
SET
r.tempsmoy_requete_min = tmm.moy_mob_requete
FROM
rapports AS r INNER JOIN
(SELECT
id_fichier,
Round(Sum(temps_requete_min)/3,0) As moy_mob_requete,
Round(Sum(temps_analyse_min)/3,0) As moy_mob_analyse,
Round(Sum(temps_maj_min)/3,0) As moy_mob_maj,
Round(Sum(temps_rap_min)/3,0) As moy_mob_rap,
Round(Sum(temps_ddc_min)/3,0) As moy_mob_ddc
FROM maintenances
WHERE
periode In (10,9,8) And
annee=2011
GROUP BY id_fichier) AS tmm ON rapports.id_rapport = tmm.id_fichier
WHERE
1=0
The WHERE 1=0 part is because I want to test further the subquery before running it.
Edit: This is some simpler query I am trying. I get a different error this time. It now tells me that tempsmoy_requete_min (and probably all other left operands) are not part of an aggregate function... which is the point of my query. Any idea ?
UPDATE
rapports INNER JOIN maintenances ON rapports.id_rapport = maintenances.id_fichier
SET
rapports.tempsmoy_requete_min = Round(Sum(temps_requete_min)/3,0),
rapports.tempsmoy_analyse_min = Round(Sum(temps_analyse_min)/3,0),
rapports.tempsmoy_maj_min = Round(Sum(temps_maj_min)/3,0),
rapports.tempsmoy_rap_min = Round(Sum(temps_rap_min)/3,0),
rapports.tempsmoy_ddc_min = Round(Sum(temps_ddc_min)/3,0)
WHERE
maintenances.periode In (10,9,8) And
maintenances.annee=2011 AND
1=0
I tried adapting your first query sample, and was able to make your error go away. However then I encountered a different error ('Operation must use an updateable query').
It may be possible to overcome that error, too. However, I found it easier to use a domain function instead of a join to retrieve the replacement value.
UPDATE rapports
SET tempsmoy_requete_min = Round(DSum("temps_requete_min",
"maintenances",
"periode In (10,9,8) AND annee=2011 "
& "AND id_fichier='" & id_rapport
& "'")/3, 0);
If this suggestion works for tempsmoy_requete_min with your data, you will have to extend it to the other fields you want to replace. That won't be pretty. You could make it less ugly with a saved query which you then use as the "Domain" parameter for DSum() ... that could allow you to use a simpler "Criteria" parameter.
UPDATE r
should be
UPDATE rapports
You can't reliably use an alias in the update target.