I found that Milvus treats % as a wildcard. To query literal % or other special characters, we need to escape them.

1. Escape % and \n: use \% for % and \\n for newlines.

2. • Prefix Match: field like "abc%".
   • Exact Match: field == "abc".
   • Intermediate % (e.g., "abc%def%") requires escaping.