[FWTools] sql string functions for shapefiles in ogrinfo

[Mateusz Loskot]

Bryan Keith wrote:
> Hello,
> 
> I can use this command and get the output I expect from a shapefile:
> 
> ogrinfo "myfile.shp" -al -sql "select * from 'myfile' where ID = 'SB-18'"
> 
> However, what if I want all records where ID starts with 'SB'?  If I
> tried left, substr and others e.g.:
> 
> where left(ID,2) = 'SB'
> 
> I assume if you're using a db like PostGIS then the sql is parsed by the
> db, and you can read the db documentation for the sql syntax.  Which sql
> syntax reference should I be using for shapefiles?

SQL query compiler in OGR supports SQL standard operators: LIKE, ILIKE,
IS, IN, etc.

So, you can write your query as follows:

"select * from myfile where ID LIKE 'SB%'"

Cheers
-- 
Mateusz Loskot
http://mateusz.loskot.net