> Having read the list, and noticed the message about table inheritance I
> thought that I would see if I could come up with a simple solution, and > have my first delve into the code for PostgreSQL. > > Attached is a diff against 7.3.3 source, of changes to describe.c for > psql. This should print out a list of parent tables in a similar style > to that of the index listing. I have done some testing on my side and it > all seems fine, can some other people have a quick look? What do people > think? Useful? Nick Barr
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@ -3,7 +3,7 @@
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*
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* Copyright 2000-2002 by PostgreSQL Global Development Group
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*
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* $Header: /cvsroot/pgsql/src/bin/psql/describe.c,v 1.79 2003/07/23 08:47:39 petere Exp $
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* $Header: /cvsroot/pgsql/src/bin/psql/describe.c,v 1.80 2003/07/25 21:42:26 momjian Exp $
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*/
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#include "postgres_fe.h"
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#include "describe.h"
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@ -928,12 +928,14 @@ describeOneTableDetails(const char *schemaname,
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*result2 = NULL,
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*result3 = NULL,
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*result4 = NULL,
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*result5 = NULL;
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*result5 = NULL,
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*result6 = NULL;
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int check_count = 0,
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index_count = 0,
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foreignkey_count = 0,
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rule_count = 0,
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trigger_count = 0;
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trigger_count = 0,
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inherits_count = 0;
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int count_footers = 0;
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/* count indexes */
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@ -1037,7 +1039,16 @@ describeOneTableDetails(const char *schemaname,
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foreignkey_count = PQntuples(result5);
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}
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footers = xmalloczero((index_count + check_count + rule_count + trigger_count + foreignkey_count + 6)
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/* count inherited tables */
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printfPQExpBuffer(&buf, "SELECT c.relname FROM pg_catalog.pg_class c, pg_catalog.pg_inherits i WHERE c.oid=i.inhparent AND i.inhrelid = '%s' ORDER BY inhseqno ASC", oid);
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result6 = PSQLexec(buf.data, false);
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if (!result6)
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goto error_return;
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else
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inherits_count = PQntuples(result6);
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footers = xmalloczero((index_count + check_count + rule_count + trigger_count + foreignkey_count + inherits_count + 6)
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* sizeof(*footers));
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/* print indexes */
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@ -1140,6 +1151,21 @@ describeOneTableDetails(const char *schemaname,
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}
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}
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/* print inherits */
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for (i = 0; i < inherits_count; i++)
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{
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char *s = _("Inherits");
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if (i == 0)
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printfPQExpBuffer(&buf, "%s: %s", s, PQgetvalue(result6, i, 0));
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else
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printfPQExpBuffer(&buf, "%*s %s", (int) strlen(s), "", PQgetvalue(result6, i, 0));
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if (i < inherits_count - 1)
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appendPQExpBuffer(&buf, ",");
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footers[count_footers++] = xstrdup(buf.data);
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}
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/* end of list marker */
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footers[count_footers] = NULL;
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@ -1148,6 +1174,7 @@ describeOneTableDetails(const char *schemaname,
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PQclear(result3);
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PQclear(result4);
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PQclear(result5);
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PQclear(result6);
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}
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printTable(title.data, headers,
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