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C# 2021-11-11 09:07:10
system.objectdisposedexception: cannot access a disposed object. object name:
Srv_LoginChannelFactory.Close() is where it's being disposed. When you call close you are giving up whatever unmanaged resource you had. Attempting to do something other then inspecting its state or re-opening it results in the "Cannot access a dispo... Add solution -
SQL 2021-11-10 00:06:17
sql trigger after insert
-- SQL Server (update my_table2 after insert on my_table1) CREATE TRIGGER trigger_name ON my_table1 FOR INSERT AS BEGIN UPDATE my_table2 SET my_col_date = getdate() FROM my_table1 END -- Oracle (insert into log table after update on my_table) CREATE ... Add solution -
Python 2021-11-09 09:50:07
django messages
from django.contrib import messages <--Change setting under settings.py from django.contrib.messages import constants as messages MESSAGE_TAGS = { messages.ERROR: 'danger' } --> {% for message in messages %} <div class="alert alert-{{ ... Add solution -
PHP 2021-11-09 06:55:08
number of rows in a mysql table pdo
//Instantiate the PDO object and connect to MySQL. $pdo = new PDO( 'mysql:host=127.0.0.1;dbname=my_database', 'username', 'password' ); //The COUNT SQL statement that we will u... Add solution -
SQL 2021-11-08 22:25:18
sql limit results
-- MySql SELECT * FROM emp ORDER BY sal DESC LIMIT 5; -- SQL Server SELECT TOP 5 * FROM emp ORDER BY sal DESC; -- Oracle < 11g SELECT * FROM ( SELECT * FROM emp ORDER BY sal DESC ) WHERE ROWNUM <= 5; -- Oracle 12c + SELECT * FROM emp ORDER BY sa... Add solution -
SQL 2021-11-08 21:15:23
sqlite3 get data from table c
#include <stdio.h> #include <string> using std::string; #include <sstream> using std::stringstream; #include "sqlite3.h" bool find_employee(int _id) { bool found = false; sqlite3* db; sqlite3_stmt* stmt; strin... Add solution -
SQL 2021-11-08 14:07:19
mongodb vs sql
''' MySQL is a relational database management system (RDBMS) from the Oracle Corporation. Like other relational systems, MySQL stores data in tables and uses structured query language (SQL) for database access. When MySQL developers need to access data... Add solution -
SQL 2021-11-07 16:36:12
how to use update trigger in sql
-- SQL Server (update my_table after update on my_table) CREATE TRIGGER trigger_name ON my_table AFTER UPDATE AS IF UPDATE (col_name) -- Optional, for particular column BEGIN UPDATE my_table SET my_col_date = getdate() FROM my_table END; -- Oracle (i... Add solution
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