So, I have this code here:
database.execute("SELECT * FROM #{table} WHERE id=#{id}")
But every time I run it I get
unrecognized token: "]" (SQLite3::SQLException)
I've tried using different ways of using placeholders, but they dont work.
I have tried replaceing the placeholders with strings and then running the SQL query, and it works like it should.
I think you might know it is wrong with the two variables.
The controlling of variable is an important method for debugging.
So just print the table and id before executing the SQL, which may not be what you expect.
Related
I am doing something that seems like it should be very easy yet I have yet to figure this out. I have read countless posts and tried everything I can think of and still no success.
Here goes:
I created a Pipeline Parameter pplLastWritten with a default value of 2022-08-20 12:19:08 (I have tried without the time for troubleshooting and still get errors)
Then I create a Data Flow Parameter ptblTableName
I have tried to convert to a Date, keeping as is and converting later...you name it still errors out.
In the expression builder I tried this and many more ways to build out to a sql statement:
"SELECT * FROM xxxxxx."+$ptblTableName+"where Lastwritten>='{$ptblLastWritten}'"
This is the post I got the idea from: ADF data flow concat expression with single quote
This is the error I got most of the time.
Operation on target df_DynamicSelect failed: {"StatusCode":"DF-Executor-StoreIsNotDefined","Message":"Job failed due to reason: at Source 'RptDBTEST'(Line 5/Col 0): The store configuration is not defined. This error is potentially caused by invalid parameter assignment in the pipeline.","Details":""}
I have tried so many things but in the end nothing has worked. I am new to Data Factory and come from the SSIS world which was so much easier. I would greatly appreciate someone helping. Please explain this like I'm a kindergartener because this tool is making me feel like it. :) Thank you in advanced.
I have tried various ways to format
Using different ideas in the expression builder
the ideas in this post: ADF data flow concat expression with single quote
You can use concat() function in the Data flow dynamic expression like below.
Here is the sample data in SQL.
I have created two dataflow parameters mytable and mydate.
Passed the values like below. Check the expression checkbox. For date you can also pass like this '2022-11-07T00:00:00.0000000'.
In the Query option use below Expression.
concat('select * from dbo.',$table_name,' where mydate >=','\'',$mydate,'\'')
Values inserted in Target table.
I'm trying to run a kusto query in Jupyter using Kql magic version 0.1.114.post16. I would like to remove the 500k lines limit and I think that the notruncate option listed when running %kql --help "client-request-properties" should solve my problem, but I can't figure out how to insert it in kql magic. It doesn't work as other options or commands.
I kind of solved this, even though I'm not sure whether this is the correct way to use Kql magic. I just added set notruncation; at the top of my query, like so
%%kql
set notruncation;
...
I'd like to have the --help specify a bit better that these are not options of the Kqlmagic commands but rather have to be put inside the query.
This code:
cursor.execute('select RLAMBD from ?', OPTable)
print cursor.fetchone().RLAMBD
produces this error:
ProgrammingError: ('42S02', '[42S02] [Oracle][ODBC][Ora]ORA-00903: invalid table name\n (903) (SQLExecDirectW)')
OPTable is an alphanumeric string which I've built from another database query which contains the table name I want to select from.
The following code works just fine within the same script.
sql = 'select RLAMBD from ' + OPTable
cursor.execute(sql)
print cursor.fetchone().RLAMBD
I guess it's not a huge deal to build the sql statements this way, but I just don't understand why it's not accepting the ? parameters. I even have another query in the same script which uses the ? parameterization and works just fine. The parameters for the working query are produced using the raw_input function, though. Is there some subtle difference between the way those two strings might be formatted that's preventing me from getting the query to work? Thank you all.
I'm running python 2.7 and pyodbc 3.0.10.
Parameter placeholders cannot be used to represent object names (e.g., table or column names) or SQL keywords. They are only used to pass data values, e.g., numbers, strings, dates, etc..
I have the following SQL script (all names replaced with metasyntactic variables):
DELETE FROM FOO
WHERE UPPER(BAR)=? AND UPPER(BAZ)=? AND UPPER(QUX)=? AND UPPER(QUUX)=? AND UPPER(CORGE)=?;
When I run it in SQL Developer, I get the following error, as expected: SQL Error: Missing IN or OUT parameter at index:: 1
Is there a way in SQL Developer to pass test parameters to these values (in this case, BAR, BAZ, QUX, QUUX, and CORGE) or do I have to manually replace the question marks? Thanks!
UPDATE: I've been looking on the internet to try to find the answer with no luck; none of the articles I found deal with the FOO=? syntax. I know that that is the proper syntax to access (and in this case, delete from) the database from a Java program, but I would like to test the SQL script before embedding it in the program.
A query that way is called a prepared statement. It is used as a way to send SQL statements from a program to the database.
First you have to prepare the prepared statement object and later you supply the parameters and finally execute the statement. When setting the parameters, you refer to each question mark in the order they apear in the statement. So in you case, BAR would be parameter 1 and CORGE will be parameter 5.
http://docs.oracle.com/javase/tutorial/jdbc/basics/prepared.html
For testing a query like this is quite useless in my experience. You could change the paramters to variables or even substitution variables if that is more convenient while testing.
http://docs.oracle.com/cd/B19306_01/server.102/b14357/ch5.htm#i1211130
I am a beginner in SQL, and I was having some trouble with special characters like parentheses and asterisks in user generated data. So far, I have mostly been using a lot of ad hoc methods of getting rid of these characters and they work well enough. Based on what I have read, I think paramaterized queries might be a more systematic way of getting around some of the problems that I have.
I have following query:
insert into midstep (street)(select street from addresses limit 10)
The column street in the table addresses has a lot of parantheses, asterisks etc. The code above works as expected. What I want to do is something like this:
prepare midstreet (text) AS insert into midstep (street)(select $1 from addresses limit 10);
execute midstreet ( street from addresses);
However, when I enter in that code I get the following error message:
ERROR: syntax error at or near "from"
SQL state: 42601
Character: 29
I have tried a bunch of variations on this code and read through the documentation on Prepare and Execute but always get error messages. Any help is appreciated!
EDIT: I forgot to mention, I am using postgresql 9.3 on and my os is Ubuntu. Please ask if you need any more information to help!
You do not need a parameter in your case, as you get your values using a sub-query. As a matter of fact, you cannot know the needed values on server-side. Parameters like that are needed if and only if you have some values defined on application level and you want to pass them to the database.