SQL | BNF Grammars for SQL-92 , SQL-99 and SQL-2003 | SQL Database library
kandi X-RAY | SQL Summary
kandi X-RAY | SQL Summary
This repository contains the BNF (Backus-Naur Form) grammars for three versions of standard SQL — SQL-92, SQL-99 and SQL-2003.
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QUESTION
I have a dynamic query that adds WHERE clauses according to the parameters received:
...ANSWER
Answered 2021-Jun-15 at 23:39I found the answer with the following lines of code:
QUESTION
I'm trying to read a file with this argument {year}
inside it.
Inside this file there is this string:
SELECT * FROM TABLE WHERE YEAR = {year}
I'd like to read this file with Python
f-strings
to use the query after.
The expected result looks like this:
SELECT * FROM TABLE WHERE YEAR = 2019
I tried this:
...ANSWER
Answered 2021-Jun-16 at 00:02Use str.format
to replace the {year}
.
f-strings are literals and must be an expression. Python will not replace data in string, just because there is a variable of the same name in the bracket notation.
QUESTION
I have the wackiest bug. Like....the wackiest! If any of ya'll want to put eyes on this, awesomesauce! I really appriciate it! I am creating a survey with REACT, Redux, SQL, HML, Material-ui, and CSS.
I've created a graph of information with am4charts using data from a database. Everything is working and will show up on the page......but not on page load. What I am seeing in my console is that the page will load, it fires off my get request but doesn't return with the data fast enough (I think). By the time that the get request loads, my graph has populated with no data.
Here is the code that I have for the page that I am rendering. What is really odd is that, once my code has run, I can cut a line of code (I've been using a console log). And then the graph will render and load.
...ANSWER
Answered 2021-Jun-15 at 22:40Can you try this fix? I created new functions for some tasks.
https://codesandbox.io/s/vigorous-varahamihira-6j588?file=/src/App.js
QUESTION
I want to Edit data, so for that, I should display it in a form.
In my table in the database, I have a primary key named id_casting
So I have he following code :
My script :
...ANSWER
Answered 2021-Jun-15 at 22:38By default laravel thinks that id is the primary key in your table. To fix this you would have to a primary key variable in your model
QUESTION
Sorry if this is a noob question!
I have two tables - a movie and a comment table.
I am trying to return output of the movie name and each comment for that movie as long as that movie has more than 1 comment associated to it.
Here are my tables
...ANSWER
Answered 2021-Jun-15 at 20:19Something like this could work
QUESTION
So I want to be able to look at a specific week of the year and look at all data in the preceding and following 6 weeks.
WHERE t1.weeknum >= week-6 AND t1.weeknum <=week+6
So if week is 20, I want to return everything between 14 and 26.
The problem is weeks >=47 and <=6. For instance, if week is 4, I want the range to be 50 through 10. Years are a separate dimension and I am including all data regardless of year.
I think this would be similar to a compass heading. Say you are at 350 degrees and turn right 30 degrees. 350+30 = 20 degree bearing.
I'm using SQL Server Express
...ANSWER
Answered 2021-Jun-15 at 20:11The Modulus operator (%) seems to be what you want. Since you are using the range 1
to 52
to represent week numbers you need to shift the range to 0
to 51
while calculating:
QUESTION
I have a dataframe where one column is ; separated strings, e.g. "str1;str2;str3;str4", I also have another static list "strx;stry;strz", the goal is to split the column string value and check if the split array has any intersection with the static list, and keep that row
I tried
...ANSWER
Answered 2021-Jun-15 at 20:34It seems you're mixing up Spark's split
method for Columns with Scala's split
for Strings. Please see example below for how the two different split
methods are used. Method array_intersect
is for intersecting the split Array column with the split element-filter string.
QUESTION
Is it possible to have another SQL query as the where statement as I tried below? The following query did not work for me. My goal is to select only the records from NOR_LABOR
table which are the ID is greater than the current maximum ID in ALL_LABOR_DETAILS
table where work_center
column like %NOR%,
ANSWER
Answered 2021-Jun-15 at 20:22From what I understand from your description you are almost there, you just need a minor tweak:
QUESTION
So I created a poll model in my Django app. I'm going thorugh the polling app tutorial posted on the Django website, however, I'm using a remote MySQL database rather than a SQLite database.
...ANSWER
Answered 2021-Jun-15 at 20:06I'm thinking the suspect is an unsuccessful migration. Let's undo it and try again
QUESTION
The following code does everything I want: pulls email, saves attachments, extracts files EXCEPT save the original email to the folder fDest. I seem unable to see the solution.
This seems to be the problematic line as it won't save the email: "mi.SaveAs fDest2, olMSG"
...ANSWER
Answered 2021-Jun-15 at 19:38You must be sure there are no invalid characters in the filename. See What characters are forbidden in Windows and Linux directory names? for more information. So, I'd suggest using the Replace
method available in VBA before passing anything to the SaveAs
method.
Another point is that you need to specify unique file names to each email. Make sure the generated file name is unique for a folder.
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