When a Snowflake user loads CSV data from a stage, which COPY INTO [table] command guideline should they follow?
When a Snowflake user loads CSV data from a stage, which COPY INTO [table] command guideline should they follow?
When loading CSV data using the COPY INTO [table] command in Snowflake, it is important that the number of columns in each row of the CSV file remains consistent. This ensures that the data can be correctly mapped to the corresponding columns in the target table. Although other aspects such as the field delimiter or whether the data file is compressed are flexible and can be adjusted through settings and recommendations, consistency in the number of columns is a fundamental requirement for proper data loading.
B is correct. Any valid character can be used as a field delimiter (not A) Snowflake recommends that files be compressed, but it's not required (Not C) You can drop columns from the file to the target table (Not D) https://docs.snowflake.com/en/user-guide/data-load-considerations-prepare#preparing-delimited-text-files
The number of columns in each row should be consistent.
C A is not right https://docs.snowflake.com/en/user-guide/data-load-prepare Structured Delimited (CSV, TSV, etc.) Any valid singlebyte delimiter is supported; default is comma (i.e. CSV). We recommend that you compress your data files when you are loading large data set. re: delimiter, you can set up your own delimiter for CSV using CREATE FILE FORMAT: https://docs.snowflake.com/en/sql-reference/sql/create-file-format
B: The number of columns in each row should be consistent.
B is correct https://docs.snowflake.com/en/user-guide/data-load-considerations-prepare#preparing-delimited-text-files
https://docs.snowflake.com/en/user-guide/data-load-transform
Default delimiter for CSV is comma as per SF docmn. Otherwise we have to create the format.
A is the correct answer.