Update international_debt.sql #1
Open
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
The changes and enhancements made to the original script: 1. **Table Definition**: - Added `NOT NULL` constraints to ensure that no null values are inserted into critical columns. - Specified a precision for the `NUMERIC` data type (`NUMERIC(18, 2)`) to accurately handle large debt amounts with decimal precision. - Defined a composite primary key on `country_code` and `indicator_code` to ensure each entry is unique based on these columns and to facilitate efficient lookups. 2. **Indexes**: - Added indexes on `country_name` and `indicator_name` to improve query performance, particularly for queries that filter or join on these columns. 3. **Comments**: - Included comments to describe the purpose of each column and step, enhancing the script's readability and maintainability. 4. **Data Import**: - Specified the column order explicitly in the `\copy` command to ensure clarity and avoid potential issues if the CSV file's column order changes. 5. **Validation Query**: - Included a `SELECT` query to validate the data import by checking the first few rows, providing a quick way to verify that the data has been correctly imported.
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Outdated suggestions cannot be applied.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.
The changes and enhancements made to the original script:
Table Definition:
NOT NULLconstraints to ensure that no null values are inserted into critical columns.NUMERICdata type (NUMERIC(18, 2)) to accurately handle large debt amounts with decimal precision.country_codeandindicator_codeto ensure each entry is unique based on these columns and to facilitate efficient lookups.Indexes:
country_nameandindicator_nameto improve query performance, particularly for queries that filter or join on these columns.Comments:
Data Import:
\copycommand to ensure clarity and avoid potential issues if the CSV file's column order changes.Validation Query:
SELECTquery to validate the data import by checking the first few rows, providing a quick way to verify that the data has been correctly imported.