not_group_start() 
| Returns: | CI_DB_query_builder instance (method chaining) | 
|---|---|
| Return type: | CI_DB_query_builder | 
Starts a group expression, using AND NOTs for the conditions inside it.
not_group_start() 
| Returns: | CI_DB_query_builder instance (method chaining) | 
|---|---|
| Return type: | CI_DB_query_builder | 
Starts a group expression, using AND NOTs for the conditions inside it.
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