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Showing index details with \d on psql.

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Greg Sabino Mullane
ecpg_big_bison
Bruce Momjian 24 years ago
parent 521017c5d0
commit 925d60ee53
1 changed files with 55 additions and 102 deletions
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  1. 157
      src/bin/psql/describe.c

157
src/bin/psql/describe.c
Unescape View File

@ -3,7 +3,7 @@
*
* Copyright 2000 by PostgreSQL Global Development Group
*
* $Header: /cvsroot/pgsql/src/bin/psql/describe.c,v 1.42 2001/11/12 15:57:08 tgl Exp $
* $Header: /cvsroot/pgsql/src/bin/psql/describe.c,v 1.43 2002/03/05 02:42:56 momjian Exp $
*/
#include "postgres_fe.h"
#include "describe.h"
@ -532,15 +532,23 @@ describeTableDetails(const char *name, bool desc)
headers[cols] = NULL;
/* Get column info */
strcpy(buf, "SELECT a.attname, format_type(a.atttypid, a.atttypmod), a.attnotnull, a.atthasdef, a.attnum");
/* Get column info (index requires additional checks) */
if (tableinfo.relkind == 'i')
strcpy(buf, "SELECT\n CASE i.indproc WHEN ('-'::regproc) THEN a.attname\n ELSE SUBSTR(pg_get_indexdef(attrelid),\n POSITION('(' in pg_get_indexdef(attrelid)))\n END, ");
else
strcpy(buf, "SELECT a.attname, ");
strcat(buf, "format_type(a.atttypid, a.atttypmod), a.attnotnull, a.atthasdef, a.attnum");
if (desc)
strcat(buf, ", col_description(a.attrelid, a.attnum)");
strcat(buf, "\nFROM pg_class c, pg_attribute a\n"
"WHERE c.relname = '");
strcat(buf, "\nFROM pg_class c, pg_attribute a");
if (tableinfo.relkind == 'i')
strcat(buf, ", pg_index i");
strcat(buf, "\nWHERE c.relname = '");
strncat(buf, name, NAMEDATALEN);
strcat(buf, "'\n AND a.attnum > 0 AND a.attrelid = c.oid\n"
"ORDER BY a.attnum");
strcat(buf, "'\n AND a.attnum > 0 AND a.attrelid = c.oid");
if (tableinfo.relkind == 'i')
strcat(buf, " AND a.attrelid = i.indexrelid");
strcat(buf, "\nORDER BY a.attnum");
res = PSQLexec(buf);
if (!res)
@ -651,11 +659,11 @@ describeTableDetails(const char *name, bool desc)
{
/* Footer information about an index */
PGresult *result;
sprintf(buf, "SELECT i.indisunique, i.indisprimary, a.amname,\n"
" pg_get_expr(i.indpred, i.indrelid) as indpred\n"
"FROM pg_index i, pg_class c, pg_am a\n"
"WHERE i.indexrelid = c.oid AND c.relname = '%s' AND c.relam = a.oid",
sprintf(buf, "SELECT i.indisunique, i.indisprimary, a.amname, c2.relname,\n"
"pg_get_expr(i.indpred,i.indrelid)\n"
"FROM pg_index i, pg_class c, pg_class c2, pg_am a\n"
"WHERE i.indexrelid = c.oid AND c.relname = '%s' AND c.relam = a.oid\n"
"AND i.indrelid = c2.oid",
name);
result = PSQLexec(buf);
@ -666,27 +674,18 @@ describeTableDetails(const char *name, bool desc)
char *indisunique = PQgetvalue(result, 0, 0);
char *indisprimary = PQgetvalue(result, 0, 1);
char *indamname = PQgetvalue(result, 0, 2);
char *indpred = PQgetvalue(result, 0, 3);
char *indtable = PQgetvalue(result, 0, 3);
char *indpred = PQgetvalue(result, 0, 4);
footers = xmalloc(3 * sizeof(*footers));
footers = xmalloc(2 * sizeof(*footers));
/* XXX This construction is poorly internationalized. */
footers[0] = xmalloc(NAMEDATALEN + 128);
snprintf(footers[0], NAMEDATALEN + 128, "%s%s",
footers[0] = xmalloc(NAMEDATALEN*4 + 128);
snprintf(footers[0], NAMEDATALEN*4 + 128, "%s%s for %s \"%s\"%s%s",
strcmp(indisprimary, "t") == 0 ? _("primary key ") :
strcmp(indisunique, "t") == 0 ? _("unique ") : "",
indamname);
if (strcmp(indisprimary, "t") == 0)
snprintf(footers[0] + strlen(footers[0]),
NAMEDATALEN + 128 - strlen(footers[0]),
_(" (primary key)"));
if (strlen(indpred) > 0)
{
footers[1] = xmalloc(64 + strlen(indpred));
snprintf(footers[1], 64 + strlen(indpred),
_("Index predicate: %s"), indpred);
footers[2] = NULL;
}
else
footers[1] = NULL;
indamname, _("table"), indtable,
strlen(indpred) ? " WHERE " : "",indpred);
footers[1] = NULL;
}
PQclear(result);
@ -706,12 +705,8 @@ describeTableDetails(const char *name, bool desc)
PGresult *result1 = NULL,
*result2 = NULL,
*result3 = NULL,
*result4 = NULL,
*result5 = NULL,
*result6 = NULL;
*result4 = NULL;
int index_count = 0,
primary_count = 0,
unique_count = 0,
constr_count = 0,
rule_count = 0,
trigger_count = 0;
@ -720,10 +715,12 @@ describeTableDetails(const char *name, bool desc)
/* count indexes */
if (!error && tableinfo.hasindex)
{
sprintf(buf, "SELECT c2.relname\n"
sprintf(buf, "SELECT c2.relname, i.indisprimary, i.indisunique,\n"
"SUBSTR(pg_get_indexdef(i.indexrelid),\n"
"POSITION('USING ' IN pg_get_indexdef(i.indexrelid))+5)\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.indisunique ORDER BY c2.relname",
"ORDER BY i.indisprimary DESC, i.indisunique DESC, c2.relname",
name);
result1 = PSQLexec(buf);
if (!result1)
@ -732,36 +729,6 @@ describeTableDetails(const char *name, bool desc)
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 */
if (!error && tableinfo.checks)
{
@ -806,54 +773,32 @@ describeTableDetails(const char *name, bool desc)
trigger_count = PQntuples(result4);
}
footers = xmalloc((index_count + primary_count + unique_count +
constr_count + rule_count + trigger_count + 1)
footers = xmalloc((index_count + constr_count + rule_count + trigger_count + 1)
* sizeof(*footers));
/* print indexes */
for (i = 0; i < index_count; i++)
{
char *s = _("Indexes");
if (i == 0)
snprintf(buf, sizeof(buf), "%s: %s", s, PQgetvalue(result1, i, 0));
else
snprintf(buf, sizeof(buf), "%*s %s", (int) strlen(s), "", PQgetvalue(result1, i, 0));
if (i < index_count - 1)
strcat(buf, ",");
footers[count_footers++] = xstrdup(buf);
}
/* Label as primary key or unique (but not both) */
strcat(buf, strcmp(PQgetvalue(result1,i,1),"t") == 0 ?
_(" primary key") : strcmp(PQgetvalue(result1,i,2),"t") == 0 ? _(" unique") : "");
/* print primary keys */
for (i = 0; i < primary_count; i++)
{
char *s = _("Primary key");
/* Everything after "USING" is echoed verbatim */
strcat(buf, PQgetvalue(result1,i,3));
if (i == 0)
snprintf(buf, sizeof(buf), "%s: %s", s, PQgetvalue(result5, i, 0));
else
snprintf(buf, sizeof(buf), "%*s %s", (int) strlen(s), "", PQgetvalue(result5, i, 0));
if (i < primary_count - 1)
if (i < index_count - 1)
strcat(buf, ",");
footers[count_footers++] = xstrdup(buf);
}
/* print unique constraints */
for (i = 0; i < unique_count; i++)
{
char *s = _("Unique keys");
if (i == 0)
snprintf(buf, sizeof(buf), "%s: %s", s, PQgetvalue(result6, i, 0));
else
snprintf(buf, sizeof(buf), "%*s %s", (int) strlen(s), "", 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++)
@ -906,8 +851,6 @@ describeTableDetails(const char *name, bool desc)
PQclear(result2);
PQclear(result3);
PQclear(result4);
PQclear(result5);
PQclear(result6);
}
if (!error)
@ -1031,9 +974,19 @@ listTables(const char *infotype, const char *name, bool desc)
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
",\n obj_description(c.oid, 'pg_class') as \"%s\"",
_("Description"));
strcat(buf,
"\nFROM pg_class c LEFT JOIN pg_user u ON c.relowner = u.usesysid\n"
"WHERE c.relkind IN (");
if (showIndexes) {
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
",\n c2.relname as \"%s\"",
_("Table"));
strcat(buf, "\nFROM pg_class c, pg_class c2, pg_index i, pg_user u\n"
"WHERE c.relowner = u.usesysid\n"
"AND i.indrelid = c2.oid AND i.indexrelid = c.oid\n");
}
else {
strcat(buf, "\nFROM pg_class c, pg_user u\n"
"WHERE c.relowner = u.usesysid\n");
}
strcat(buf, "AND c.relkind IN (");
if (showTables)
strcat(buf, "'r',");
if (showViews)

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