Problems with table names containing character '%', related issue #87 #193
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
pyodbc uses '?' instead of '%s' as parameter placeholder. SQL identifiers (consequently table names, columns) can contain special characters if surrounded by brackets '[...]' Replace only those placeholders:'%, %%, %s, %d etc.' which are not surrounded by brackets. This is not complete solution, there may be problems with string literals in SQL etc. , if non string placeholder is found (example:%d) there should be error raised.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
1 participant
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
pyodbc uses '?' instead of '%s' as parameter placeholder.
SQL identifiers (consequently table names, columns) can contain special characters if surrounded by brackets '[...]'
Replace only those placeholders:'%, %%, %s, %d etc.' which are not surrounded by brackets.
This is not complete solution, there may be problems with string literals in SQL etc. , if non string placeholder is found (example:%d) there should be error raised.
Test:
input:
''', test,%ss, [Company$Item].[Percentile %], [Company$Item],%s, [bfbfdb%vbddfb], %, %% [[%]], [%'''result:
''', test,?s, [Company$Item].[Percentile %], [Company$Item],?, [bfbfdb%vbddfb], ?, ? [[%]], [%'''