I'm using Kohana 3 framework with Mysql stored procedures. How can I get id of the last inserted record?
Here's the code:
class Model_MyModel extends Kohana_Model
{
public function insertNew($param1, $param2)
{
$result = $this->_db->query(Database::INSERT, 'CALL insertNew('.$param1.', '.$param2.', false)';
return $result;
}
...
...
}
Documentation says, the query() method returns an array with the last insert id and affected rows number, when executing an insert query. When I call: print_r($result)
I'm getting:
Array
(
[0] => 0
[1] => 1
)
The insert_id key is 0, though I'm having many records in the db.
What I'm doing wrong?
I think you'll have to use SQL's LAST_INSERT_ID() after inserting using a procedure:
SELECT LAST_INSERT_ID() as last_insert_id FROM table_name
( in your procedure just define this query in the end ).
The problem in this case is that Kohana automatically returns mysql_insert_id and mysql_affected_rows as result for Database::INSERT, so you'll need to call the procedure as a SELECT query and fetch it (Database::SELECT).
Related
const result = await connection.execute(
`SELECT * from no_example `, [], { maxRows: 1000 } // bind value for :id
);
but in result i always get empty rows
If you are inserting rows in another tool, or another program. Make sure that you COMMIT the data:
SQL> create table t (c number);
Table created.
SQL> insert into t (c) values (1);
1 row created.
SQL> commit;
Commit complete.
If you are insert using Node.js, look at the autoCommit attribute and connection.commit() function. Also see the node-oracledb documentation on Transaction Management.
Unrelated to your problem, but you almost certainly shouldn't be using maxRows. By default node-oracledb will return all rows. If you don't want all, then add some kind of WHERE clause or row-limiting clause to your query. If you expect a big number of rows, then use a result set so you can access consecutive batches of rows.
Below is my dynamodb row object structure.
Status, Calls are 1st level columns and Inside Calls, i have nested data.
Record
->Status : 0
->Calls
-[0]:CapIndex : 5
-[1]:CapIndex : 0
What is the scan query in Servicestack and I need to fetch rows with Status=0 and if any of the Calls having CapIndex=0
I tried the below but it was throwing exception
dynamoClient.FromScan<Cache>(x=>x.Status==0 && x.Calls.Any(y=>y.CapIndex == 0)).Exec()
Exception:
variable 'x' of type 'Cache' referenced from scope '', but it is not defined
Any idea folks?
You can't perform a server side query on a nested complex type, you would need to perform the nested complex type query on the client after executing the Dynamo DB Query, e.g:
var results = dynamoClient.FromScan<Cache>(x=>x.Status==0).Exec()
.Where(x => x.Calls.Any(y=>y.CapIndex == 0)).ToList();
I have a query (Update statement) wrapped in a function and will need to perform the same statement on multiple columns during the course of my script
async function update_percentage_value(value, id){
(async () => {
const client = await pool.connect();
try {
const res = await client.query('UPDATE fixtures SET column_1_percentage = ($1) WHERE id = ($2) RETURNING *', [value, id]);
} finally {
client.release();
}
})().catch(e => console.log(e.stack))
}
I then call this function
update_percentage_value(50, 2);
I have many columns to update at various points of my script, each one needs to be done at the time. I would like to be able to just call the one function, passing the column name, value and id.
My table looks like below
CREATE TABLE fixtures (
ID SERIAL PRIMARY KEY,
home_team VARCHAR,
away_team VARCHAR,
column_1_percentage INTEGER,
column_2_percentage INTEGER,
column_3_percentage INTEGER,
column_4_percentage INTEGER
);
Is it at all possible to do this?
I'm going to post the solution that was advised by Sehrope Sarkuni via the node-postgres GitHub repo. This helped me a lot and works for what I require:
No column names are identifiers and they can't be specified as parameters. They have to be included in the text of the SQL command.
It is possible but you have to build the SQL text with the column names. If you're going to dynamically build SQL you should make sure to escape the components using something like pg-format or use an ORM that handles this type of thing.
So something like:
const format = require('pg-format');
async function updateFixtures(id, column, value) {
const sql = format('UPDATE fixtures SET %I = $1 WHERE id = $2', column);
await pool.query(sql, [value, id]);
}
Also if you're doing multiple updates to the same row back-to-back then you're likely better off with a single UPDATE statement that modifies all the columns rather than separate statements as they'd be both slower and generate more WAL on the server.
To get the column names of the table, you can query the information_schema.columns table which stores the details of column structure of your table, this would help you in framing a dynamic query for updating a specific column based on a specific result.
You can get the column names of the table with the help of following query:
select column_name from information_schema.columns where table_name='fixtures' and table_schema='public';
The above query would give you the list of columns in the table.
Now to update each one for a specific purpose, You can store the result set of column name to a variable and pass that variable to the function to perform the required action.
I've a problem with LINQ. Basically a third party database that I need to connect to is using the now depreciated text field (I can't change this) and I need to execute a distinct clause in my linq on results that contain this field.
I don't want to do a ToList() before executing the Distinct() as that will result in thousands of records coming back from the database that I don't require and will annoy the client as they get charged for bandwidth usage. I only need the first 15 distinct records.
Anyway query is below:
var query = (from s in db.tSearches
join sc in db.tSearchIndexes on s.GUID equals sc.CPSGUID
join a in db.tAttributes on sc.AttributeGUID equals a.GUID
where s.Notes != null && a.Attribute == "Featured"
select new FeaturedVacancy
{
Id = s.GUID,
DateOpened = s.DateOpened,
Notes = s.Notes
});
return query.Distinct().OrderByDescending(x => x.DateOpened);
I know I can do a subquery to do the same thing as above (tSearches contains unique records) but I'd rather a more straightfoward solution if available as I need to change a number of similar queries throughout the code to get this working.
No answers on how to do this so I went with my first suggestion and retrieved the unique records first from tSearch then constructed a subquery with the non unique records and filtered the search results by this subquery. Answer below:
var query = (from s in db.tSearches
where s.DateClosed == null && s.ConfidentialNotes != null
orderby s.DateOpened descending
select new FeaturedVacancy
{
Id = s.GUID,
Notes = s.ConfidentialNotes
});
/* Now filter by our 'Featured' attribute */
var subQuery = from sc in db.tSearchIndexes
join a in db.tAttributes on sc.AttributeGUID equals a.GUID
where a.Attribute == "Featured"
select sc.CPSGUID;
query = query.Where(x => subQuery.Contains(x.Id));
return query;
I want to perform a simple join on two tables (BusinessUnit and UserBusinessUnit), so I can get a list of all BusinessUnits allocated to a given user.
The first attempt works, but there's no override of Select which allows me to restrict the columns returned (I get all columns from both tables):
var db = new KensDB();
SqlQuery query = db.Select
.From<BusinessUnit>()
.InnerJoin<UserBusinessUnit>( BusinessUnitTable.IdColumn, UserBusinessUnitTable.BusinessUnitIdColumn )
.Where( BusinessUnitTable.RecordStatusColumn ).IsEqualTo( 1 )
.And( UserBusinessUnitTable.UserIdColumn ).IsEqualTo( userId );
The second attept allows the column name restriction, but the generated sql contains pluralised table names (?)
SqlQuery query = new Select( new string[] { BusinessUnitTable.IdColumn, BusinessUnitTable.NameColumn } )
.From<BusinessUnit>()
.InnerJoin<UserBusinessUnit>( BusinessUnitTable.IdColumn, UserBusinessUnitTable.BusinessUnitIdColumn )
.Where( BusinessUnitTable.RecordStatusColumn ).IsEqualTo( 1 )
.And( UserBusinessUnitTable.UserIdColumn ).IsEqualTo( userId );
Produces...
SELECT [BusinessUnits].[Id], [BusinessUnits].[Name]
FROM [BusinessUnits]
INNER JOIN [UserBusinessUnits]
ON [BusinessUnits].[Id] = [UserBusinessUnits].[BusinessUnitId]
WHERE [BusinessUnits].[RecordStatus] = #0
AND [UserBusinessUnits].[UserId] = #1
So, two questions:
- How do I restrict the columns returned in method 1?
- Why does method 2 pluralise the column names in the generated SQL (and can I get round this?)
I'm using 3.0.0.3...
So far my experience with 3.0.0.3 suggests that this is not possible yet with the query tool, although it is with version 2.
I think the preferred method (so far) with version 3 is to use a linq query with something like:
var busUnits = from b in BusinessUnit.All()
join u in UserBusinessUnit.All() on b.Id equals u.BusinessUnitId
select b;
I ran into the pluralized table names myself, but it was because I'd only re-run one template after making schema changes.
Once I re-ran all the templates, the plural table names went away.
Try re-running all 4 templates and see if that solves it for you.