This statement declares a cursor and associates it with a SELECT statement that retrieves the rows to be traversed by the cursor. To fetch the rows later, use a FETCH statement. The number of columns retrieved by the SELECT statement must match the number of output variables specified in the...
* If you use collections in resultMaps then cursor SQL queries must be ordered (resultOrdered="true") * using the id columns of the resultMap. * * @author Guillaume Darmont / guillaume@ */ 1. 2. 3. 4. 5. 6. 7. 8. Cursors are a perfect fit to handle millions of items queries ...
This statement declares a cursor and associates it with a SELECT statement that retrieves the rows to be traversed by the cursor. To fetch the rows later, use a FETCH statement. The number of columns retrieved by the SELECT statement must match the number of output variables specified in the...
I have a store proc in which i dump .26 million rows of data of two columns. When i run this store proc the DB restarts itself due to some memory problem. My read buffer memory is 2G and my server has a memory of 1GB ram. create procedure nb_compute_nol_geographic_info(in nb_...
(2)Histogram present for column with system-generated bind value If the same SQL statement is executed multiple times, each execution has its own child cursor. In this case, the database peeks at bind variable values and create a new child cursor for each distinct value. Thus, each statement...
Description:since mysql-connector-python 8.0.11 (up to 8.0.17), when fetching result from a prepared cursor, no matter use_pure or not, it may fail if the varbinary column contains bytes cannot be decoded. It's not the same bug withhttps://bugs.mysql.com/bug.php?id=94944How to repea...
mysql/connector/cursor_cext.py", line 330, in execute result = self._cnx.cmd_query( File "/home/.local/lib/python3.9/site-packages/mysql/connector/connection_cext.py", line 632, in cmd_query return self.fetch_eof_columns() File "/home/.local/lib/python3.9/site-packages/mysql/...
This statement fetches the next row for the SELECT statement associated with the specified cursor (which must be open), and advances the cursor pointer. If a row exists, the fetched columns are stored in the named variables. The number of columns retrieved by the SELECT statement must match ...
Example when sorting with multiple columns and :limit:page = Rotulus::Page.new(users, order: { first_name: :asc, last_name: :desc }, limit: 3)The gem will automatically add the table's PK(users.id) in the ORDER BY as the tie-breaker column to ensure stable sorting and pagination....
It doesn't seem to matter, I still only get data for the first four columns of the select statement, the numShifts column is always empty (except in the mysql client). Because I have to move along with my project, I rewrote the entire sproc to be a view where I plug in the two...