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This just breaks down the indices in to three groups:

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non-unique: stay as they were
unique and primary: become listed as primary keys
unique and non-primary: become listed as unique keys

I also made it so that it shows the names of check constraints ie:

Check: "$1" (a > 5)

Christopher Kings
This commit is contained in:
Bruce Momjian
2001-05-28 02:01:22 +00:00
parent e23f8c4557
commit d66a404983
1 changed files with 79 additions and 15 deletions
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78
src/bin/psql/describe.c
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@ -3,7 +3,7 @@
* *
* Copyright 2000 by PostgreSQL Global Development Group * Copyright 2000 by PostgreSQL Global Development Group
* *
* $Header: /cvsroot/pgsql/src/bin/psql/describe.c,v 1.32 2001/05/27 21:50:50 petere Exp $ * $Header: /cvsroot/pgsql/src/bin/psql/describe.c,v 1.33 2001/05/28 02:01:22 momjian Exp $
*/ */
#include "postgres_fe.h" #include "postgres_fe.h"
#include "describe.h" #include "describe.h"
@ -738,8 +738,12 @@ describeTableDetails(const char *name, bool desc)
PGresult *result1 = NULL, PGresult *result1 = NULL,
*result2 = NULL, *result2 = NULL,
*result3 = NULL, *result3 = NULL,
*result4 = NULL; *result4 = NULL,
*result5 = NULL,
*result6 = NULL;
int index_count = 0, int index_count = 0,
primary_count = 0,
unique_count = 0,
constr_count = 0, constr_count = 0,
rule_count = 0, rule_count = 0,
trigger_count = 0; trigger_count = 0;
@ -751,7 +755,7 @@ describeTableDetails(const char *name, bool desc)
sprintf(buf, "SELECT c2.relname\n" sprintf(buf, "SELECT c2.relname\n"
"FROM pg_class c, pg_class c2, pg_index i\n" "FROM pg_class c, pg_class c2, pg_index i\n"
"WHERE c.relname = '%s' AND c.oid = i.indrelid AND i.indexrelid = c2.oid\n" "WHERE c.relname = '%s' AND c.oid = i.indrelid AND i.indexrelid = c2.oid\n"
"ORDER BY c2.relname", "AND NOT i.indisunique ORDER BY c2.relname",
name); name);
result1 = PSQLexec(buf); result1 = PSQLexec(buf);
if (!result1) if (!result1)
@ -760,10 +764,40 @@ describeTableDetails(const char *name, bool desc)
index_count = PQntuples(result1); index_count = PQntuples(result1);
} }
/* count primary keys */
if (!error && tableinfo.hasindex)
{
sprintf(buf, "SELECT c2.relname\n"
"FROM pg_class c, pg_class c2, pg_index i\n"
"WHERE c.relname = '%s' AND c.oid = i.indrelid AND i.indexrelid = c2.oid\n"
"AND i.indisprimary AND i.indisunique ORDER BY c2.relname",
name);
result5 = PSQLexec(buf);
if (!result5)
error = true;
else
primary_count = PQntuples(result5);
}
/* count unique constraints */
if (!error && tableinfo.hasindex)
{
sprintf(buf, "SELECT c2.relname\n"
"FROM pg_class c, pg_class c2, pg_index i\n"
"WHERE c.relname = '%s' AND c.oid = i.indrelid AND i.indexrelid = c2.oid\n"
"AND NOT i.indisprimary AND i.indisunique ORDER BY c2.relname",
name);
result6 = PSQLexec(buf);
if (!result6)
error = true;
else
unique_count = PQntuples(result6);
}
/* count table (and column) constraints */ /* count table (and column) constraints */
if (!error && tableinfo.checks) if (!error && tableinfo.checks)
{ {
sprintf(buf, "SELECT rcsrc\n" sprintf(buf, "SELECT rcsrc, rcname\n"
"FROM pg_relcheck r, pg_class c\n" "FROM pg_relcheck r, pg_class c\n"
"WHERE c.relname='%s' AND c.oid = r.rcrelid", "WHERE c.relname='%s' AND c.oid = r.rcrelid",
name); name);
@ -804,7 +838,8 @@ describeTableDetails(const char *name, bool desc)
trigger_count = PQntuples(result4); trigger_count = PQntuples(result4);
} }
footers = xmalloc((index_count + constr_count + rule_count + trigger_count + 1) footers = xmalloc((index_count + primary_count + unique_count +
constr_count + rule_count + trigger_count + 1)
* sizeof(*footers)); * sizeof(*footers));
/* print indices */ /* print indices */
@ -820,11 +855,38 @@ describeTableDetails(const char *name, bool desc)
footers[count_footers++] = xstrdup(buf); footers[count_footers++] = xstrdup(buf);
} }
/* print contraints */ /* print primary keys */
for (i = 0; i < constr_count; i++) for (i = 0; i < primary_count; i++)
{ {
sprintf(buf, "%s %s", sprintf(buf, "%s %s",
primary_count == 1 ? "Primary Key:" : (i == 0 ? "Primary Keys:" : " "),
PQgetvalue(result5, i, 0)
);
if (i < primary_count - 1)
strcat(buf, ",");
footers[count_footers++] = xstrdup(buf);
}
/* print unique constraints */
for (i = 0; i < unique_count; i++)
{
sprintf(buf, "%s %s",
unique_count == 1 ? "Unique Key:" : (i == 0 ? "Unique Keys:" : " "),
PQgetvalue(result6, i, 0)
);
if (i < unique_count - 1)
strcat(buf, ",");
footers[count_footers++] = xstrdup(buf);
}
/* print constraints */
for (i = 0; i < constr_count; i++)
{
sprintf(buf, "%s \"%s\" %s",
constr_count == 1 ? "Constraint:" : (i == 0 ? "Constraints:" : " "), constr_count == 1 ? "Constraint:" : (i == 0 ? "Constraints:" : " "),
PQgetvalue(result2, i, 1),
PQgetvalue(result2, i, 0) PQgetvalue(result2, i, 0)
); );
footers[count_footers++] = xstrdup(buf); footers[count_footers++] = xstrdup(buf);
@ -863,6 +925,8 @@ describeTableDetails(const char *name, bool desc)
PQclear(result2); PQclear(result2);
PQclear(result3); PQclear(result3);
PQclear(result4); PQclear(result4);
PQclear(result5);
PQclear(result6);
} }
if (!error) if (!error)