The mi_scan_forupdate() accessor function
The mi_scan_forupdate() function determines if the SELECT query includes a FOR UPDATE clause.
Syntax
mi_boolean mi_scan_forupdate(MI_AM_SCAN_DESC *scanDesc);- scanDesc
- Points to the scan descriptor.
Usage
The access method should protect data with the appropriate lock level for update transactions and possibly store user data for the am_update or am_delete purpose function.
To determine the lock level, call the mi_scan_locktype() access function.
Return values
- MI_TRUE
- Indicates that the query includes a FOR UPDATE clause.
- MI_FALSE
- Indicates that the query does not include a FOR UPDATE clause.