Skip to content

P
Postgres FD Implementation
Commit 925d60ee authored by Bruce Momjian's avatar Bruce Momjian
Browse files
Options

Showing index details with \d on psql. 

Greg Sabino Mullane
parent 521017c5
Hide whitespace changes
Inline Side-by-side
Showing with 55 additions and 102 deletions
src/bin/psql/describe.c
View file @ 925d60ee
......@@ -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)
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment