pg_result resultHandle resultOption
The handle for a query result.
Specifies one of several possible options.
-statusthe status of the result.
-errorthe error message, if the status indicates error; otherwise an empty string.
-connthe connection that produced the result.
-oidif the command was an INSERT, the OID of the inserted tuple; otherwise an empty string.
-numTuplesthe number of tuples returned by the query.
-numAttrsthe number of attributes in each tuple.
-assign arrayNameassign the results to an array, using subscripts of the form (tupno,attributeName).
-assignbyidx arrayName ?appendstr?assign the results to an array using the first attribute's value and
the remaining attributes' names as keys. If appendstr is given then
it is appended to each key. In short, all but the first field of each
tuple are stored into the array, using subscripts of the form
(firstFieldValue,fieldNameAppendStr).
-getTuple tupleNumberreturns the fields of the indicated tuple in a list. Tuple numbers start at zero.
-tupleArray tupleNumber arrayNamestores the fields of the tuple in array arrayName, indexed by field names.
Tuple numbers start at zero.
-attributesreturns a list of the names of the tuple attributes.
-lAttributesreturns a list of sublists, {name ftype fsize} for each tuple attribute.
-clearclear the result query object.
pg_result returns information about a query result
created by a prior pg_exec.
You can keep a query result around for as long as you need it, but when
you are done with it, be sure to free it by
executing pg_result -clear. Otherwise, you have
a memory leak, and Pgtcl will eventually start complaining that you've
created too many query result objects.