pgbench: Improve help output of -I option

Add a description of the step letters to the --help output.

Author: Gurjeet Singh <gurjeet@singh.im>
Reviewed-by: Tristen Raab <tristen.raab@highgo.ca>
Discussion: https://www.postgresql.org/message-id/flat/CABwTF4Xbc=K4tFj5Znc8jx0GCufQa577GCDsWD7=71qDnUEOyQ@mail.gmail.com

diff --git a/src/bin/pgbench/pgbench.c b/src/bin/pgbench/pgbench.c
index 7a42fd00ee4007d49e7996f6525b26dbdf99c923..e3919395eaccb5770b2f46a09db33a1987f7b5bd 100644 (file)
--- a/src/bin/pgbench/pgbench.c
+++ b/src/bin/pgbench/pgbench.c
@@ -873,7 +873,14 @@ usage(void)
                   "\nInitialization options:\n"
                   "  -i, --initialize         invokes initialization mode\n"
                   "  -I, --init-steps=[" ALL_INIT_STEPS "]+ (default \"" DEFAULT_INIT_STEPS "\")\n"
-                  "                           run selected initialization steps\n"
+                  "                           run selected initialization steps, in the specified order\n"
+                  "                           d: drop any existing pgbench tables\n"
+                  "                           t: create the tables used by the standard pgbench scenario\n"
+                  "                           g: generate data, client-side\n"
+                  "                           G: generate data, server-side\n"
+                  "                           v: invoke VACUUM on the standard tables\n"
+                  "                           p: create primary key indexes on the standard tables\n"
+                  "                           f: create foreign keys between the standard tables\n"
                   "  -F, --fillfactor=NUM     set fill factor\n"
                   "  -n, --no-vacuum          do not run VACUUM during initialization\n"
                   "  -q, --quiet              quiet logging (one message each 5 seconds)\n"