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Showing index details with \d on psql.

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Greg Sabino Mullane
This commit is contained in:
Bruce Momjian
2002-03-05 02:42:56 +00:00
parent 521017c5d0
commit 925d60ee53
1 changed files with 57 additions and 104 deletions
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159
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 1.42 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 "postgres_fe.h"
#include "describe.h" #include "describe.h"
@ -532,15 +532,23 @@ describeTableDetails(const char *name, bool desc)
headers[cols] = NULL; headers[cols] = NULL;
/* Get column info */ /* Get column info (index requires additional checks) */
strcpy(buf, "SELECT a.attname, format_type(a.atttypid, a.atttypmod), a.attnotnull, a.atthasdef, a.attnum"); 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) if (desc)
strcat(buf, ", col_description(a.attrelid, a.attnum)"); strcat(buf, ", col_description(a.attrelid, a.attnum)");
strcat(buf, "\nFROM pg_class c, pg_attribute a\n" strcat(buf, "\nFROM pg_class c, pg_attribute a");
"WHERE c.relname = '"); if (tableinfo.relkind == 'i')
strcat(buf, ", pg_index i");
strcat(buf, "\nWHERE c.relname = '");
strncat(buf, name, NAMEDATALEN); strncat(buf, name, NAMEDATALEN);
strcat(buf, "'\n AND a.attnum > 0 AND a.attrelid = c.oid\n" strcat(buf, "'\n AND a.attnum > 0 AND a.attrelid = c.oid");
"ORDER BY a.attnum"); if (tableinfo.relkind == 'i')
strcat(buf, " AND a.attrelid = i.indexrelid");
strcat(buf, "\nORDER BY a.attnum");
res = PSQLexec(buf); res = PSQLexec(buf);
if (!res) if (!res)
@ -651,11 +659,11 @@ describeTableDetails(const char *name, bool desc)
{ {
/* Footer information about an index */ /* Footer information about an index */
PGresult *result; PGresult *result;
sprintf(buf, "SELECT i.indisunique, i.indisprimary, a.amname, c2.relname,\n"
sprintf(buf, "SELECT i.indisunique, i.indisprimary, a.amname,\n" "pg_get_expr(i.indpred,i.indrelid)\n"
" pg_get_expr(i.indpred, i.indrelid) as indpred\n" "FROM pg_index i, pg_class c, pg_class c2, pg_am a\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\n"
"WHERE i.indexrelid = c.oid AND c.relname = '%s' AND c.relam = a.oid", "AND i.indrelid = c2.oid",
name); name);
result = PSQLexec(buf); result = PSQLexec(buf);
@ -666,27 +674,18 @@ describeTableDetails(const char *name, bool desc)
char *indisunique = PQgetvalue(result, 0, 0); char *indisunique = PQgetvalue(result, 0, 0);
char *indisprimary = PQgetvalue(result, 0, 1); char *indisprimary = PQgetvalue(result, 0, 1);
char *indamname = PQgetvalue(result, 0, 2); 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. */ /* XXX This construction is poorly internationalized. */
footers[0] = xmalloc(NAMEDATALEN + 128); footers[0] = xmalloc(NAMEDATALEN*4 + 128);
snprintf(footers[0], NAMEDATALEN + 128, "%s%s", snprintf(footers[0], NAMEDATALEN*4 + 128, "%s%s for %s \"%s\"%s%s",
strcmp(indisprimary, "t") == 0 ? _("primary key ") :
strcmp(indisunique, "t") == 0 ? _("unique ") : "", strcmp(indisunique, "t") == 0 ? _("unique ") : "",
indamname); indamname, _("table"), indtable,
if (strcmp(indisprimary, "t") == 0) strlen(indpred) ? " WHERE " : "",indpred);
snprintf(footers[0] + strlen(footers[0]), footers[1] = NULL;
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;
} }
PQclear(result); PQclear(result);
@ -706,12 +705,8 @@ 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;
@ -720,10 +715,12 @@ describeTableDetails(const char *name, bool desc)
/* count indexes */ /* count indexes */
if (!error && tableinfo.hasindex) 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" "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"
"AND NOT i.indisunique ORDER BY c2.relname", "ORDER BY i.indisprimary DESC, i.indisunique DESC, c2.relname",
name); name);
result1 = PSQLexec(buf); result1 = PSQLexec(buf);
if (!result1) if (!result1)
@ -732,36 +729,6 @@ 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)
{ {
@ -806,8 +773,7 @@ describeTableDetails(const char *name, bool desc)
trigger_count = PQntuples(result4); trigger_count = PQntuples(result4);
} }
footers = xmalloc((index_count + primary_count + unique_count + footers = xmalloc((index_count + constr_count + rule_count + trigger_count + 1)
constr_count + rule_count + trigger_count + 1)
* sizeof(*footers)); * sizeof(*footers));
/* print indexes */ /* print indexes */
@ -819,41 +785,20 @@ describeTableDetails(const char *name, bool desc)
snprintf(buf, sizeof(buf), "%s: %s", s, PQgetvalue(result1, i, 0)); snprintf(buf, sizeof(buf), "%s: %s", s, PQgetvalue(result1, i, 0));
else else
snprintf(buf, sizeof(buf), "%*s %s", (int) strlen(s), "", PQgetvalue(result1, i, 0)); snprintf(buf, sizeof(buf), "%*s %s", (int) strlen(s), "", PQgetvalue(result1, i, 0));
/* 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") : "");
/* Everything after "USING" is echoed verbatim */
strcat(buf, PQgetvalue(result1,i,3));
if (i < index_count - 1) if (i < index_count - 1)
strcat(buf, ","); strcat(buf, ",");
footers[count_footers++] = xstrdup(buf); footers[count_footers++] = xstrdup(buf);
} }
/* print primary keys */
for (i = 0; i < primary_count; i++)
{
char *s = _("Primary key");
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)
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 */ /* print constraints */
for (i = 0; i < constr_count; i++) for (i = 0; i < constr_count; i++)
@ -906,8 +851,6 @@ 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)
@ -1031,9 +974,19 @@ listTables(const char *infotype, const char *name, bool desc)
snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
",\n obj_description(c.oid, 'pg_class') as \"%s\"", ",\n obj_description(c.oid, 'pg_class') as \"%s\"",
_("Description")); _("Description"));
strcat(buf, if (showIndexes) {
"\nFROM pg_class c LEFT JOIN pg_user u ON c.relowner = u.usesysid\n" snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
"WHERE c.relkind IN ("); ",\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) if (showTables)
strcat(buf, "'r',"); strcat(buf, "'r',");
if (showViews) if (showViews)