Working with Text Indexes

1. Creating Text Index

Form	Effect
createIndex({title: "text"})	Single-field text index
Limit	One text index per collection

2. Creating Compound Text Index

Form	Effect
createIndex({title:"text", body:"text"})	Multi-field text
Wildcard	{"$**":"text"} indexes all string fields

3. Setting Text Index Weights

Aspect	Detail
Option	{ weights: { title: 10, body: 1 } }
Effect	Multiplies term score per field
Default weight	1

4. Setting Default Language

Option	Effect
default_language	Stemming/stop-word language (e.g., "english", "spanish")
"none"	Disables stemming and stop words

5. Using Language Override

Option	Effect
language_override	Field name holding per-doc language (default "language")
Use	Multi-lingual content in one collection

6. Creating Wildcard Text Index

Form	Effect
createIndex({"$**": "text"})	Indexes all string fields
Cost	Larger index; slower writes

7. Dropping Text Index

Form	Note
dropIndex("title_text")	Default name pattern
getIndexes()	Confirm exact name

8. Understanding Text Index Limitations

Limitation	Detail
One per collection	Cannot have two text indexes
No phrase fuzziness	Use Atlas Search for fuzzy
No prefix wildcard	Use Atlas Search autocomplete
Cannot hint	$text queries always use text index