I'm using LinqPad and IQ driver for SQLite. I have connection with this file. Look:
"Okreslone rzutowanie jest nieprawidlowe" - it can be simple translate to "invalid cast", but Zbiors.Count() return value 8.
When i'm trying do it in SQL query:
select * from zbior
Then all's ok. How can i get same result by "C#", not by SQL query?
Most likely, the types are incorrect. SQLite has a horrible "feature" whereby you can put strings into integer columns and vice versa. The column types are merely suggestion and are not enforced. So what looks like integers in your data might actually be strings, causing in InvalidCastException when the IQ driver tries to read them.
Related
I am trying to implement a use-case in Mule4 where a tour needs to be assigned to a user if it has not already been assigned.
I was hoping that I could implement it using Mule db:insert component and using INSERT WHERE NOT EXISTS SQL script as below.
INSERT INTO TL_MAPPING_TOUR(TOURNO,TLID,SYSTEM) select :tourno,:tlid,:system from DUAL
where not exists(select * from TL_MAPPING_TOUR where (TOURNO=:tourno and TLID=:tlid and SYSTEM=:system))
However, this is resulting in Mule Exception
Message : ORA-01722: invalid number
Error type : DB:BAD_SQL_SYNTAX
TL_MAPPING_TOUR table has an id column (Primary Key), but that is auto-generated by a sequence.
The same script, modified for running directly in SQL developer, as shown below, is working fine.
INSERT into TL_MAPPING_TOUR(TOURNO,TLID,SYSTEM)
select 'CLLO001474','123456789','AS400'
from DUAL
where not exists(select * from TL_MAPPING_TOUR where (TOURNO='CLLO001474' and TLID='123456789' and SYSTEM='AS400'));
Clearly Mule db:insert component doesn't like the syntax, but it's not very clear to me what is wrong here. I can't find any INSERT WHERE NOT EXISTS example implementation for the Mule4 Database component either.
stackoverflow page https://stackoverflow.com/questions/54910330/insert-record-into-sql-server-when-it-does-not-already-exist-using-mule directs to page not found.
Any idea what is wrong here and how to implement this in Mule4 without using another Mule4 db:select component before db:insert?
I don't know "mule4", but this:
Message : ORA-01722: invalid number
doesn't mean that syntax is wrong (as you already tested it - the same statement works OK in another tool).
Cause: You executed a SQL statement that tried to convert a string to a number, but it was unsuccessful.
Resolution:
The option(s) to resolve this Oracle error are:
Option #1: Only numeric fields or character fields that contain numeric values can be used in arithmetic operations. Make sure that all expressions evaluate to numbers.
Option #2: If you are adding or subtracting from dates, make sure that you added/substracted a numeric value from the date.
In other words, it seems that one of columns is declared as NUMBER, while you passed something that is a string. Oracle performed implicit conversion when you tested the statement in SQL Developer, but it seems that mule4 didn't and hence the error.
The most obvious cause (based on what you posted) is putting '123456789' into TLID as other values are obviously strings. Therefore, pass 123456789 (a number, no single quotes around it) and see what happens. Should work.
SQL Developer is too forgiving. It will convert string to numbers and vise versa automatically when it can. And it can a lot.
Mulesoft DB connector tries the same but it is not as succefule as native tools. Pretty often it fails to convert, especially on dates but this is not your case.
In short - do not trust too much data sense of Mulesoft. If it works - great! Otherwise try to eliminate any intelligence from it and do all conversions in the query and better from the string. Usually number works fine but if doesn't - use to_number function to mark properly that this is the number.
More about this is here https://simpleflatservice.com/mule4/AvoidCoversionsOrMakeThemNative.html
I am able to read data. However, when writing data to Teradata database, I get the following error:
Error in .verify.JDBC.result(s, "Unable to create JDBC prepared
statement ", :
Unable to create JDBC prepared statement INSERT INTO
dl_nbu.alex_test2 VALUES(?,?) ([Teradata Database]
[TeraJDBC 16.10.00.07] [Error 3932] [SQLState 25000] Only an ET or
null statement is legal after a DDL Statement.)
Here is my code:
dbWriteTable(tdConnection, "dl_nbu.alex_test2", all_files4)
Hard to give an answer without details. But check the RJDBC help page:
Due to the fact that JDBC can talk to a wide variety of databases, the SQL dialect understood by the database is not known in advance. Therefore the RJDBC implementation tries to adhere to the SQL92 standard, but not all databases are compliant. This affects mainly functions such as dbWriteTable that have to automatically generate SQL code. One major ability is the support for quoted identifiers. The SQL92 standard uses double-quotes, but many database engines either don’t support it or use other character. The
identifier.quote parameter allows you to set the proper quote character for the database used. For example MySQL would require identifier.quote="`". If set to NA, the ability to quote identifiers is disabled, which poses restrictions on the names that can be used for tables and fields. Other functionality is not affected.
Try this and see what happens:
allfiles4 -> allFilesFour
dbWriteTable(tdConnection, "testTwo", allFilesFour)
If works, then the problem is in the quote identifier. Change the line where you make the connection to something like:
tdConnection <- dbConnect( JDBC( identifier.quote = "`" ), ...
Check this post: Do different databases use different name quote?
I have a normal String athakur#test.com. It is stored encrypted in oracle DB with some encryption key. The algo used is not available in DB2 and I want the same data in DB2.
I am not able to directly transfer data by copy paste as the characters are different it basically gives different characters when I paste it from SQL developer to data studio. So I am trying to convert encrypted data to hex and then converting hex to data in DB2. But that does not seem to work.
Encrypted data in hex using rawtohex is 1E70A8495CEC19EEBDBA7A652344C850B1266E74247A9306 but in DB2 when I do
select x'1E70A8495CEC19EEBDBA7A652344C850B1266E74247A9306' from dual;
I am getting null.
Any idea what am I missing or any other way to replicate data?
What version and platform of DB2?
Your statement should work, assuming you're on a version that has Oracle's dual table instead of the sysibm.sysdummy1 equivalent.
It does work for me, though the display value is unreadable of course. I suspect you really want
select hex(x'1E70A8495CEC19EEBDBA7A652344C850B1266E74247A9306')
from dual;
You can't display the encrypted value directly as it isn't valid displayable characters. The best you can do
insert x'1E70A8495CEC19EEBDBA7A652344C850B1266E74247A9306'
into mytbl;
select hex(myfld)
from mytbl;
Make sure that you define myfld as CHAR(24) FOR BIT DATA
Is there a way to determine if a MATCH query sent to an fts3 table in sqlite is valid? Currently, I don't find out if the expression is invalid until I try to run it, which makes it a little tricky. I'd like to report to the user that the syntax is invalid before even trying to run it.
I'm using sqlite with the C api.
Additionally, doing a search with the expression "NOT " will fail with a "SQLlite logic/database error". Googling seems to indicate that such a query is invalid. Is there a correct syntax to do the operation? I'm essentially trying to find entries that do NOT contain that term. Or do I have to drop back down to using LIKE and do a sequential scan and not use FTS?
Looks like the simplest way right now is to create a separate FTS table with no rows, and execute the query against it. It will be immediate since there's no data in the table, and will report and error if the query syntax is incorrect.
I get the following error:
Cannot use empty object or column names. Use a single space if necessary.
Msg 1038, Level 15, State 3, Line 1
and the query command looks like:
SELECT TOP 100 PERCENT
[].[cms_page].[pa_id], [].[cms_page].[pa_key],
[].[cms_page].[pa_title], [].[cms_page].[pa_keywords],
[].[cms_page].[pa_description], [].[cms_page].[pa_header],
[].[cms_page].[pa_created], [].[cms_page].[pa_modified],
[].[cms_page].[pa_language] FROM [cms_page]
WHERE
[cms_page].[pa_key] = #pa_key0
ORDER BY
[pa_id] ASC;
Strange indeed. Why does this happen? I'm using SubSonic 2.1.
Connectionstring:
<add name="OCDB" connectionString="Network Library=DBMSSOCN;Data Source=127.0.0.1,1433;Initial Catalog=test_db;User ID=test;Password=testpwd"/>
Edit: Well the solution was just to simply generate and rebuild the Data Access Layer and I was good to go.
You seem to be using a 3 part name with part of it empty, i.e. '[].'
It looks as though the query text is being constructed with an empty table schema.
Those empty [] square brackets should contain something like "dbo" to make the query syntactically valid. I don't know enough about SubSonic to give you a code sample though.
I'm not familiar with SubSonic, but have you tried a simpler query to test if you have your syntax correct? Does this query even work in SQL Server (Management Studio / Query Analyzer)?
Just looking at this from the perspective of SQL Server, you are using way too many brackets. If I was writing that query in SQL Server, it would look more like what I wrote below. I'm not sure about the variable #pa_key0, is this query part of a stored procedure or does SunSonic replace this variable when the query is ran?
SELECT
pa_id,
pa_key,
pa_title,
pa_keywords,
pa_description,
pa_header,
pa_created,
pa_modified,
pa_language
FROM
cms_page
WHERE
pa_key = #pa_key0
ORDER BY
pa_id ASC;
I think you need to set the schema for Subsonic to use. This thread seems to have some information:
Subsonic - How to use SQL Schema / Owner name as part of the namespace?