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EXPLAIN VERBOSE prints the plan, and now pretty-prints the plan to

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the postmaster log file.
This commit is contained in:
Bruce Momjian 1998-08-04 15:00:28 +00:00
parent f71b671bd5
commit 7db9ea5c1e
2 changed files with 10 additions and 6 deletions
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11
src/backend/commands/explain.c
View File

@ -7,7 +7,7 @@
* *
* *
* IDENTIFICATION * IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.21 1998/08/04 04:50:15 momjian Exp $ * $Header: /cvsroot/pgsql/src/backend/commands/explain.c,v 1.22 1998/08/04 15:00:26 momjian Exp $
* *
*------------------------------------------------------------------------- *-------------------------------------------------------------------------
*/ */
@ -30,7 +30,7 @@ typedef struct ExplainState
{ {
/* options */ /* options */
bool printCost; /* print cost */ bool printCost; /* print cost */
bool printNodes; /* do pprint() instead */ bool printNodes; /* do nodeToString() instead */
/* other states */ /* other states */
List *rtable; /* range table */ List *rtable; /* range table */
} ExplainState; } ExplainState;
@ -81,8 +81,11 @@ ExplainQuery(Query *query, bool verbose, CommandDest dest)
es->rtable = query->rtable; es->rtable = query->rtable;
if (es->printNodes) if (es->printNodes)
s = pprint(plan); {
pprint(plan); /* display in postmaster log file */
s = nodeToString(plan);
}
if (es->printCost) if (es->printCost)
{ {
s2 = Explain_PlanToString(plan, es); s2 = Explain_PlanToString(plan, es);

5
src/man/explain.l
View File

@ -1,6 +1,6 @@
.\" This is -*-nroff-*- .\" This is -*-nroff-*-
.\" XXX standard disclaimer belongs here.... .\" XXX standard disclaimer belongs here....
.\" $Header: /cvsroot/pgsql/src/man/Attic/explain.l,v 1.9 1998/02/10 04:02:59 momjian Exp $ .\" $Header: /cvsroot/pgsql/src/man/Attic/explain.l,v 1.10 1998/08/04 15:00:28 momjian Exp $
.TH EXPLAIN SQL 06/12/97 PostgreSQL PostgreSQL .TH EXPLAIN SQL 06/12/97 PostgreSQL PostgreSQL
.SH NAME .SH NAME
explain - explains statement execution details explain - explains statement execution details
@ -11,7 +11,8 @@ explain - explains statement execution details
.SH DESCRIPTION .SH DESCRIPTION
This command outputs details about the supplied query. The default This command outputs details about the supplied query. The default
output is the computed query cost. \f2verbose\f1 displays the full query output is the computed query cost. \f2verbose\f1 displays the full query
plan and cost. plan and cost to your screen, and pretty-prints the plan to the postmaster
log file.
.SH EXAMPLES .SH EXAMPLES
In the examples, the table has a single column of float4. In the examples, the table has a single column of float4.