# pgRouting Manual (2.1.0)

## Developers’s Functions

Functions to help you develop a wrapper or a recipe

> - pgr_getColumnName - to get the name of the column as is stored in the postgres administration tables.
> - pgr_getTableName - to retrieve the name of the table as is stored in the postgres administration tables.
> - pgr_isColumnIndexed - to check if the column is indexed.
> - pgr_isColumnInTable - to check only for the existance of the column.
> - pgr_pointToId -to insert/get the id of the inserted point in a vertices table.
> - pgr_quote_ident - to quotes the input text to be used as an identifier in an SQL statement string.
> - pgr_versionless - to compare two version numbers.
> - pgr_startPoint - to get the start point of a (multi)linestring.
> - pgr_endPoint - to get the end point of a (multi)linestring.