ST_BandFileTimestamp
Name
ST_BandFileTimestamp — Returns the file timestamp of a band stored in file system. If no bandnum specified, 1 is assumed.
Synopsis
    
     bigint
     
      ST_BandFileTimestamp
     
     (
    
    raster
    
     rast
    
    , integer
    
     bandnum=1
    
    
     )
    
    ;
   
Description
Returns the file timestamp (number of seconds since Jan 1st 1970 00:00:00 UTC) of a band stored in file system. Throws an error if called with an in db band, or if outdb access is not enabled.
This function is typically used in conjunction with ST_BandPath() and ST_BandFileSize() so a client can determine if the filename of a outdb raster as seen by it is the same as the one seen by the server.
Availability: 2.5.0