[tag=IN] [word=□] □ | □
[tag=IN] [word="me.But"] □ | □
[tag=IN] [word=the] □ | □
These operators must be named ' <' and '> ' ; you do not have any choice in the matter , since there is no provision for specifying them explicitly . This can be slow on large tables because the rows are fetched from the heap in index order , and if the heap table is unordered , the entries are on random pages , so there is one disk page retrieved for every row moved . There must be ' <' and '> ' ordering operators having the same left and right input datatypes as the mergejoinable operator itself . Without this tag , action will be performed in addition to the user command when the event in the condition part of the rule occurs . Most of the remaining steps in the installation will happen in this account.Ftp file ftp://ftp.postgresql.org/pub/postgresql-v6.5.1.tar.gz from the Internet . Working at the Portland District ’ s Hydroelectric Design Center , Roos ’ numerous design projects involving complex calculations include hoists ; hydroturbine efficiency testing ; heating , ventilating and air condition design ; piping design ; hydraulic forces over spillways ; hydraulic downpull on gates in waterways ; and stresses in rotating machinery . If you are requesting a range of indexed values from a table , or a single indexed value that has multiple rows that match , CLUSTER will help because once the index identifies the heap page for the first row that matches , all other rows that match are probably already on the same heap page , saving disk accesses and speeding up the query .