On 10/04/14 00:23, Robert Haas wrote:
On Tue, Apr 8, 2014 at 5:27 AM, Ian Barwick <i...@2ndquadrant.com> wrote:
On 08/04/14 18:22, Ian Barwick wrote:

As it was kind of annoying not to have this when playing around with
event triggers.

This also tightens up the existing tab completion for ALTER TRIGGER,
which contained redundant code for table name completion, and which was
also causing a spurious "RENAME TO" to be inserted in this context:

      CREATE EVENT TRIGGER foo ON {event} ^I


Apologies, previous patch had some unrelated changes in it.

Correct patch attached.

This *still* has some unrelated things in it, like s/Pgsql/Postgres/,
and numerous hunks consisting entirely of whitespace changes and/or
changes to unrelated comments.

Apologies again, that was ill-thought out. Revised patch attached with only the additions related to event triggers, and the small fix for ALTER TRIGGER mentioned above which ensures "RENAME TO" is applied only when "ALTER TRIGGER <name> ON <sth>" was input; currently there is no check for a preceding "ALTER", resulting in the spurious "RENAME TO" when completing "CREATE EVENT TRIGGER".

Also, what's the point of this hunk:

*************** psql_completion(const char *text, int st
*** 1318,1340 ****
                          pg_strcasecmp(prev2_wd, "TRIGGER") == 0)
                 COMPLETE_WITH_CONST("ON");

-       else if (pg_strcasecmp(prev4_wd, "ALTER") == 0 &&
-                        pg_strcasecmp(prev3_wd, "TRIGGER") == 0)
-       {
-               completion_info_charp = prev2_wd;
-               COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_trigger);
-       }
-
         /*
!        * If we have ALTER TRIGGER <sth> ON, then add the correct tablename
          */
         else if (pg_strcasecmp(prev4_wd, "ALTER") == 0 &&
                          pg_strcasecmp(prev3_wd, "TRIGGER") == 0 &&
                          pg_strcasecmp(prev_wd, "ON") == 0)
!               COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);

         /* ALTER TRIGGER <name> ON <name> */
!       else if (pg_strcasecmp(prev4_wd, "TRIGGER") == 0 &&
                          pg_strcasecmp(prev2_wd, "ON") == 0)
                 COMPLETE_WITH_CONST("RENAME TO");

--- 1355,1374 ----
                          pg_strcasecmp(prev2_wd, "TRIGGER") == 0)
                 COMPLETE_WITH_CONST("ON");

         /*
!        * If we have ALTER TRIGGER <name> ON, then add the correct tablename
          */
         else if (pg_strcasecmp(prev4_wd, "ALTER") == 0 &&
                          pg_strcasecmp(prev3_wd, "TRIGGER") == 0 &&
                          pg_strcasecmp(prev_wd, "ON") == 0)
!       {
!               completion_info_charp = prev2_wd;
!               COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_trigger);
!       }

         /* ALTER TRIGGER <name> ON <name> */
!       else if (pg_strcasecmp(prev5_wd, "ALTER") == 0 &&
!                        pg_strcasecmp(prev4_wd, "TRIGGER") == 0 &&
                          pg_strcasecmp(prev2_wd, "ON") == 0)
                 COMPLETE_WITH_CONST("RENAME TO");


I'll submit that as a separate patch. This was intended to fix this:


        else if (pg_strcasecmp(prev4_wd, "ALTER") == 0 &&
                         pg_strcasecmp(prev3_wd, "TRIGGER") == 0)
        {
                completion_info_charp = prev2_wd;
                COMPLETE_WITH_QUERY(Query_for_list_of_tables_for_trigger);
        }

        /*
         * If we have ALTER TRIGGER <sth> ON, then add the correct tablename
         */
        else if (pg_strcasecmp(prev4_wd, "ALTER") == 0 &&
                         pg_strcasecmp(prev3_wd, "TRIGGER") == 0 &&
                         pg_strcasecmp(prev_wd, "ON") == 0)
                COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);


as the second "else if" clause is redundant.


Regards

Ian Barwick


--
 Ian Barwick                   http://www.2ndQuadrant.com/
 PostgreSQL Development, 24x7 Support, Training & Services
diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
new file mode 100644
index 202ffce..6d26ffc
*** a/src/bin/psql/tab-complete.c
--- b/src/bin/psql/tab-complete.c
*************** static const SchemaQuery Query_for_list_
*** 714,719 ****
--- 714,724 ----
  "   FROM pg_catalog.pg_prepared_statements "\
  "  WHERE substring(pg_catalog.quote_ident(name),1,%d)='%s'"
  
+ #define Query_for_list_of_event_triggers \
+ " SELECT pg_catalog.quote_ident(evtname) "\
+ "   FROM pg_catalog.pg_event_trigger "\
+ "  WHERE substring(pg_catalog.quote_ident(evtname),1,%d)='%s'"
+ 
  /*
   * This is a list of all "things" in Pgsql, which can show up after CREATE or
   * DROP; and there is also a query to get a list of them.
*************** static const pgsql_thing_t words_after_c
*** 746,751 ****
--- 751,757 ----
  	{"DATABASE", Query_for_list_of_databases},
  	{"DICTIONARY", Query_for_list_of_ts_dictionaries, NULL, THING_NO_SHOW},
  	{"DOMAIN", NULL, &Query_for_list_of_domains},
+ 	{"EVENT TRIGGER", NULL, NULL},
  	{"EXTENSION", Query_for_list_of_extensions},
  	{"FOREIGN DATA WRAPPER", NULL, NULL},
  	{"FOREIGN TABLE", NULL, NULL},
*************** psql_completion(const char *text, int st
*** 934,940 ****
  	{
  		static const char *const list_ALTER[] =
  		{"AGGREGATE", "COLLATION", "CONVERSION", "DATABASE", "DEFAULT PRIVILEGES", "DOMAIN",
! 			"EXTENSION", "FOREIGN DATA WRAPPER", "FOREIGN TABLE", "FUNCTION",
  			"GROUP", "INDEX", "LANGUAGE", "LARGE OBJECT", "MATERIALIZED VIEW", "OPERATOR",
  			 "ROLE", "RULE", "SCHEMA", "SERVER", "SEQUENCE", "SYSTEM SET", "TABLE",
  			"TABLESPACE", "TEXT SEARCH", "TRIGGER", "TYPE",
--- 940,946 ----
  	{
  		static const char *const list_ALTER[] =
  		{"AGGREGATE", "COLLATION", "CONVERSION", "DATABASE", "DEFAULT PRIVILEGES", "DOMAIN",
! 			"EVENT TRIGGER", "EXTENSION", "FOREIGN DATA WRAPPER", "FOREIGN TABLE", "FUNCTION",
  			"GROUP", "INDEX", "LANGUAGE", "LARGE OBJECT", "MATERIALIZED VIEW", "OPERATOR",
  			 "ROLE", "RULE", "SCHEMA", "SERVER", "SEQUENCE", "SYSTEM SET", "TABLE",
  			"TABLESPACE", "TEXT SEARCH", "TRIGGER", "TYPE",
*************** psql_completion(const char *text, int st
*** 1003,1008 ****
--- 1009,1045 ----
  		COMPLETE_WITH_LIST(list_ALTERDATABASE);
  	}
  
+ 	/* ALTER EVENT TRIGGER */
+ 	else if (pg_strcasecmp(prev3_wd, "ALTER") == 0 &&
+ 			 pg_strcasecmp(prev2_wd, "EVENT") == 0 &&
+ 			 pg_strcasecmp(prev_wd, "TRIGGER") == 0)
+ 	{
+ 		COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
+ 	}
+ 
+ 	/* ALTER EVENT TRIGGER <name> */
+ 	else if (pg_strcasecmp(prev4_wd, "ALTER") == 0 &&
+ 			 pg_strcasecmp(prev3_wd, "EVENT") == 0 &&
+ 			 pg_strcasecmp(prev2_wd, "TRIGGER") == 0)
+ 	{
+ 		static const char *const list_ALTER_EVENT_TRIGGER[] =
+ 			{"DISABLE", "ENABLE", "OWNER TO", "RENAME TO", NULL};
+ 
+ 		COMPLETE_WITH_LIST(list_ALTER_EVENT_TRIGGER);
+ 	}
+ 
+ 	/* ALTER EVENT TRIGGER <name> ENABLE */
+ 	else if (pg_strcasecmp(prev5_wd, "ALTER") == 0 &&
+ 			 pg_strcasecmp(prev4_wd, "EVENT") == 0 &&
+ 			 pg_strcasecmp(prev3_wd, "TRIGGER") == 0 &&
+ 			 pg_strcasecmp(prev_wd, "ENABLE") == 0)
+ 	{
+ 		static const char *const list_ALTER_EVENT_TRIGGER_ENABLE[] =
+ 			{"REPLICA", "ALWAYS", NULL};
+ 
+ 		COMPLETE_WITH_LIST(list_ALTER_EVENT_TRIGGER_ENABLE);
+ 	}
+ 
  	/* ALTER EXTENSION <name> */
  	else if (pg_strcasecmp(prev3_wd, "ALTER") == 0 &&
  			 pg_strcasecmp(prev2_wd, "EXTENSION") == 0)
*************** psql_completion(const char *text, int st
*** 1334,1340 ****
  		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
  
  	/* ALTER TRIGGER <name> ON <name> */
! 	else if (pg_strcasecmp(prev4_wd, "TRIGGER") == 0 &&
  			 pg_strcasecmp(prev2_wd, "ON") == 0)
  		COMPLETE_WITH_CONST("RENAME TO");
  
--- 1371,1378 ----
  		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_tables, NULL);
  
  	/* ALTER TRIGGER <name> ON <name> */
! 	else if (pg_strcasecmp(prev5_wd, "ALTER") == 0 &&
! 			 pg_strcasecmp(prev4_wd, "TRIGGER") == 0 &&
  			 pg_strcasecmp(prev2_wd, "ON") == 0)
  		COMPLETE_WITH_CONST("RENAME TO");
  
*************** psql_completion(const char *text, int st
*** 1876,1882 ****
  			 pg_strcasecmp(prev_wd, "ON") == 0)
  	{
  		static const char *const list_COMMENT[] =
! 		{"CAST", "COLLATION", "CONVERSION", "DATABASE", "EXTENSION",
  			"FOREIGN DATA WRAPPER", "FOREIGN TABLE",
  			"SERVER", "INDEX", "LANGUAGE", "RULE", "SCHEMA", "SEQUENCE",
  			"TABLE", "TYPE", "VIEW", "MATERIALIZED VIEW", "COLUMN", "AGGREGATE", "FUNCTION",
--- 1914,1920 ----
  			 pg_strcasecmp(prev_wd, "ON") == 0)
  	{
  		static const char *const list_COMMENT[] =
! 		{"CAST", "COLLATION", "CONVERSION", "DATABASE", "EVENT TRIGGER", "EXTENSION",
  			"FOREIGN DATA WRAPPER", "FOREIGN TABLE",
  			"SERVER", "INDEX", "LANGUAGE", "RULE", "SCHEMA", "SEQUENCE",
  			"TABLE", "TYPE", "VIEW", "MATERIALIZED VIEW", "COLUMN", "AGGREGATE", "FUNCTION",
*************** psql_completion(const char *text, int st
*** 1931,1936 ****
--- 1969,1981 ----
  	{
  		COMPLETE_WITH_SCHEMA_QUERY(Query_for_list_of_matviews, NULL);
  	}
+ 	else if (pg_strcasecmp(prev4_wd, "COMMENT") == 0 &&
+ 			 pg_strcasecmp(prev3_wd, "ON") == 0 &&
+ 			 pg_strcasecmp(prev2_wd, "EVENT") == 0 &&
+ 			 pg_strcasecmp(prev_wd, "TRIGGER") == 0)
+ 	{
+ 		COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
+ 	}
  	else if ((pg_strcasecmp(prev4_wd, "COMMENT") == 0 &&
  			  pg_strcasecmp(prev3_wd, "ON") == 0) ||
  			 (pg_strcasecmp(prev5_wd, "COMMENT") == 0 &&
*************** psql_completion(const char *text, int st
*** 2354,2359 ****
--- 2399,2425 ----
  			 pg_strcasecmp(prev_wd, "AS") == 0)
  		COMPLETE_WITH_CONST("SELECT");
  
+ /* CREATE EVENT TRIGGER */
+ 	else if (pg_strcasecmp(prev2_wd, "CREATE") == 0 &&
+ 			 pg_strcasecmp(prev_wd, "EVENT") == 0)
+ 		COMPLETE_WITH_CONST("TRIGGER");
+ 	/* Complete CREATE EVENT TRIGGER <name> with ON */
+ 	else if (pg_strcasecmp(prev4_wd, "CREATE") == 0 &&
+ 			 pg_strcasecmp(prev3_wd, "EVENT") == 0 &&
+ 			 pg_strcasecmp(prev2_wd, "TRIGGER") == 0)
+ 		COMPLETE_WITH_CONST("ON");
+ 	/* Complete CREATE EVENT TRIGGER <name> ON with event_type */
+ 	else if (pg_strcasecmp(prev5_wd, "CREATE") == 0 &&
+ 			 pg_strcasecmp(prev4_wd, "EVENT") == 0 &&
+ 			 pg_strcasecmp(prev3_wd, "TRIGGER") == 0 &&
+ 			 pg_strcasecmp(prev_wd, "ON") == 0)
+ 	{
+ 		static const char *const list_CREATE_EVENT_TRIGGER_ON[] =
+ 		{"ddl_command_start", "ddl_command_end", "sql_drop", NULL};
+ 
+ 		COMPLETE_WITH_LIST(list_CREATE_EVENT_TRIGGER_ON);
+ 	}
+ 
  /* DECLARE */
  	else if (pg_strcasecmp(prev2_wd, "DECLARE") == 0)
  	{
*************** psql_completion(const char *text, int st
*** 2446,2451 ****
--- 2512,2520 ----
  			 (pg_strcasecmp(prev4_wd, "DROP") == 0 &&
  			  pg_strcasecmp(prev3_wd, "AGGREGATE") == 0 &&
  			  prev_wd[strlen(prev_wd) - 1] == ')') ||
+ 			 (pg_strcasecmp(prev4_wd, "DROP") == 0 &&
+ 			  pg_strcasecmp(prev3_wd, "EVENT") == 0 &&
+ 			  pg_strcasecmp(prev2_wd, "TRIGGER") == 0) ||
  			 (pg_strcasecmp(prev5_wd, "DROP") == 0 &&
  			  pg_strcasecmp(prev4_wd, "FOREIGN") == 0 &&
  			  pg_strcasecmp(prev3_wd, "DATA") == 0 &&
*************** psql_completion(const char *text, int st
*** 2518,2523 ****
--- 2587,2605 ----
  		COMPLETE_WITH_LIST(list_ALTERTEXTSEARCH);
  	}
  
+ 	/* DROP EVENT TRIGGER */
+ 	else if (pg_strcasecmp(prev2_wd, "DROP") == 0 &&
+ 			 pg_strcasecmp(prev_wd, "EVENT") == 0)
+ 	{
+ 		COMPLETE_WITH_CONST("TRIGGER");
+ 	}
+ 	else if (pg_strcasecmp(prev3_wd, "DROP") == 0 &&
+ 			 pg_strcasecmp(prev2_wd, "EVENT") == 0 &&
+ 			 pg_strcasecmp(prev_wd, "TRIGGER") == 0)
+ 	{
+ 		COMPLETE_WITH_QUERY(Query_for_list_of_event_triggers);
+ 	}
+ 
  /* EXECUTE, but not EXECUTE embedded in other commands */
  	else if (pg_strcasecmp(prev_wd, "EXECUTE") == 0 &&
  			 prev2_wd[0] == '\0')
-- 
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