Github user ictmalili commented on a diff in the pull request:
https://github.com/apache/incubator-hawq/pull/883#discussion_r80218089
--- Diff: tools/doc/hawqregister_help ---
@@ -110,14 +113,24 @@ table 'pg_aoseg.pg_paqseg_77160'.
*****************************************************
EXAMPLE FOR USAGE2
*****************************************************
-$ psql -c "drop table if exists table;"
-$ psql -c "create table table(i int) with (appendonly=true,
orientation=parquet) distributed by (i);"
-$ psql -c "insert into table values(1), (2), (3);"
-$ hawq extract -d postgres -o t.yml table
-$ hawq register -d postgres -c t.yml newtable
-In this example, suppose that "table" is a table in old HAWQ Cluster, user
dump "t.yml" yaml file to
-save the metadata of "table". To register the "newtable" in a new HAWQ
Cluster, user run "hawq register"
-to register the newtable with the given yaml file "t.yml".
+This example shows hawq register functionality of hawq register according
to yml configuration file.
+Usually the yml configuration file is generated by hawq extract.
+This example shows the life cycle of hawq extract and hawq register.
+
+Firstly, create a table and insert some data into it:
+$ psql -c "create table paq1(a int, b varchar(10))with(appendonly=true,
orientation=parquet);"
+$ psql -c "insert into paq1 values(generate_series(1,1000), 'abcde');"
+
+Secondly, extract the table metadata information out:
+$ hawq extract -o paq1.yml paq1
+
+Thirdly, register to new table paq2 identifying yml file:
+$ hawq register --config paq1.yml paq2
+
+Finally, select the new table to look at whether the content has already
been registered.
+$ select count(*) from paq2;
+
+In the above example, the final result must be return 1000.
--- End diff --
change "must be" to "should"
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