将CSV导入MonetDB遇问题求助：路径错误与记录不完整

Hey there! Let's work through your two CSV import errors step by step—these are super common when you're just getting started with MonetDB, so don't worry.

1. Resolving the "filename must have absolute path" Error #

Even though you provided what looks like an absolute path, Windows paths can trip up MonetDB due to two common issues: unescaped backslashes and spaces in the path. Here's how to fix it:

• Escape backslashes: In SQL, single backslashes are treated as escape characters, so you need to double them up for Windows paths:

  COPY INTO "123" FROM 'C:\\Program Files\\MonetDB\\112.csv' USING DELIMITERS '|', '|\n' LOCKED;
  

• Or use forward slashes: MonetDB accepts forward slashes even on Windows, which avoids the escape character hassle:

  COPY INTO "123" FROM 'C:/Program Files/MonetDB/112.csv' USING DELIMITERS '|', '|\n' LOCKED;
  

• Quote table names: Since your table starts with a number (123), wrap it in double quotes to avoid identifier issues—this is a good practice for non-standard table names in SQL.

2. Fixing the "incomplete record at end of file" Error #

This error means MonetDB can't parse the last line of your CSV file because it doesn't match the expected format. Here are the most likely fixes:

• Check the CSV file's final line: Open 112.csv in a text editor and verify:
  • The last record has the same number of | delimiters as all other records.
  • If you're using '|\n' as the row delimiter, the final line should end with | followed by a newline. If it doesn't, add that missing | at the end of the last record.
• Remove extra empty lines: Sometimes files have a blank line at the end—delete any trailing empty lines in the CSV.
• Adjust the row delimiter: If your rows are actually separated just by newlines (not | + newline), change the row delimiter in your COPY statement to '\n':

  COPY INTO usgs FROM 'C:/Program Files/MonetDB/112.csv' USING DELIMITERS '|', '\n' LOCKED;
  

If you try these tweaks and still run into issues, double-check that your table schema (123 or usgs) matches the number of columns in your CSV file—mismatched column counts can also cause unexpected import errors!

内容的提问来源于stack exchange，提问作者Ada