Questions tagged [code]
The code tag has no usage guidance.
12
questions
0
votes
1
answer
515
views
SQL to check if a certain time duration occurs within a particular period of the day
I'm working with data that has a start datetime and end datetime column for each event which can be a short period of time
(Few hours) up to a number of days in duration.
I'm trying to establish a way ...
- 13
-1
votes
1
answer
45
views
MySQL code error [closed]
Can someone please tell what is wrong with below SQL code?
CREATE TABLE student (
student_id INT PRIMARY KEY,
first_name VARCHAR(20),
major VARCHAR(20),
);
-1
votes
2
answers
1k
views
I want to select many columns from many tables without foreign key
I have three tables, and I want to fetch the three table data without a foreign key.
Say I have a table product_1 which contains (id, name) and table product_2 contain (id, name, price).
I want to ...
- 1
1
vote
2
answers
1k
views
How can I get this code to work? It's in mysql, I keep getting an error 1822' failed to add foreign key constraint. Missing index for constraint' [closed]
CREATE TABLE EMPLOYEE (
employeeNumber VARCHAR (15) NOT NULL,
employeeName VARCHAR (20) NOT NULL,
department VARCHAR (10) NOT NULL,
phone INT NOT NULL,
PRIMARY KEY (employeeName, department)
...
- 13
1
vote
1
answer
39
views
Does CUBRID have Information Schema Views?
I am trying to access the Information Schema views as defined in SQL92, and cannot find any in the CUBRID RDBMS. Has CUBRID implemented this specification and how can I access them?
CUBRID version: ...
- 167
5
votes
2
answers
18k
views
Best practices for committing a transaction in SQL Server where TRY CATCH is used
In a SQL Server code block, what is the best place to place the commit transaction? Inside the try catch block or outside it?.
For example, is option A or option B the correct approach or are they ...
- 193
0
votes
3
answers
250
views
What is back-end programming? [closed]
I like to know what exactly is the back-end programming? Does it include offline databases? Everyone who designs and creates databases and tables is a back-end programmer? What do they mean exactly by ...
- 131
0
votes
1
answer
5k
views
MYSQL - Operand should contain 1 column(s) - Nested Case statement [closed]
I have written the below query with nested case statements. The syntax checks out but when I run it I receive error code 1241: Operand should contain only 1 column(s). I have attempted to remove the ...
0
votes
1
answer
67
views
Access Send Email. Loop Not Building Table
I’m stumped on this one. I have an action item list on a fairly large Project Management DB. This list is datasheet that is embedded as a subform on a PopUp form from the Main Menu. On the Action Item ...
- 88
0
votes
1
answer
40
views
I am trying to run this code and I get an error at line 11 [closed]
CREATE TABLE IF NOT EXISTS `tblproduct` (
`id` int(8) NOT NULL AUTO_INCREMENT,
`name` varchar(255) NOT NULL,
`code` varchar(255) NOT NULL,
`image` text NOT NULL,
`price` double(10,2) NOT ...
- 1
1
vote
1
answer
600
views
Oracle PLSQL code recovery
I cannot connect to my database as admin, even using connect descriptor neither via RMAN. I am getting TNS-12514 error.
I consider to install new instance.
Questions:
1) Can I restore/recover PLSQL ...
- 155
3
votes
1
answer
947
views
Improve select query performance
The following select query from my application is taking more than 200ms. The table has around 2 million rows. Is there any ways to improve the performance of this query ?
select count(id) from ...
- 181