Changed " to '. Removed bug section from psql. added reminder for log call
in built-in. fixed backslases in source for libpq.
This commit is contained in:
Bruce Momjian
parent
54c9905d6e
commit
a180738ddd
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@ -1,6 +1,6 @@
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.\" This is -*-nroff-*-
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.\" XXX standard disclaimer belongs here....
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.\" $Header: /cvsroot/pgsql/src/man/Attic/built-in.3,v 1.1 1996/11/14 10:15:15 scrappy Exp $
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.\" $Header: /cvsroot/pgsql/src/man/Attic/built-in.3,v 1.2 1996/11/15 17:55:26 momjian Exp $
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.TH BUILT-INS INTRO 11/05/95 Postgres95 Postgres95
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.SH "DESCRIPTION"
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This section describes the data types, functions and operators
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@ -208,7 +208,7 @@ float8
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|/ square root
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||/ cube root
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: exponential function
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; natural logarithm
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; natural logarithm (in psql, protect with parentheses)
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point
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!< A is left of B
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@ -1,7 +1,6 @@
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.\" This is -*-nroff-*-
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.\" XXX standard disclaimer belongs here....
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.\" $Header: /usr/local/devel/postgres/src/ref/RCS/large_objects.3pqsrc,v 1.12 1
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993/08/23 09:03:16 aoki Exp $
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.\" $Header: /cvsroot/pgsql/src/man/Attic/large_objects.3,v 1.2 1996/11/15 17:55:29 momjian Exp $
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.TH "LARGE OBJECTS" INTRO 03/18/94 Postgres95 Postgres95
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.SH DESCRIPTION
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.PP
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@ -16,7 +15,6 @@ This section describes the implementation and the
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programmatic and query language interfaces to Postgres large object data.
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.PP
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.SH "Historical Note"
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.SH "Historical Note"
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.PP
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Originally, postgres 4.2 supports three standard implementations of large
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objects: as files external to Postgres, as Unix files managed by Postgres, and as
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@ -27,7 +25,6 @@ it provides stricter data integrity and time travel. For historical reasons,
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they are called Inversion large objects. (We will use Inversion and large
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objects interchangeably to mean the same thing in this section.)
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.SH "Inversion Large Objects"
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.SH "Inversion Large Objects"
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.PP
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The Inversion large
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object implementation breaks large objects up into \*(lqchunks\*(rq and
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@ -35,7 +32,6 @@ stores the chunks in tuples in the database. A B-tree index
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guarantees fast searches for the correct chunk number when doing
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random access reads and writes.
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.SH "Large Object Interfaces"
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.SH "Large Object Interfaces"
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.PP
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The facilities Postgres provides to access large objects, both in
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the backend as part of user-defined functions or the front end
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@ -77,7 +73,6 @@ Postgres provides a set of routines that
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support opening, reading, writing, closing, and seeking on large
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objects.
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.SH "Creating a Large Object"
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.SH "Creating a Large Object"
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.PP
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The routine
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.nf
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@ -114,7 +109,6 @@ The commands below create an (Inversion) large object:
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inv_oid = lo_creat(INV_READ|INV_WRITE|INV_ARCHIVE);
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.fi
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.SH "Importing a Large Object"
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.SH "Importing a Large Object"
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To import a UNIX file as a large object, call
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.nf
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Oid
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@ -125,7 +119,6 @@ The
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argument specifies the UNIX pathname of the file to be imported as
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a large object.
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.SH "Exporting a Large Object"
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.SH "Exporting a Large Object"
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To export a large object into UNIX file, call
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.nf
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int
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@ -138,7 +131,6 @@ the
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.I filename
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argument specifies the UNIX pathname of the file.
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.SH "Opening an Existing Large Object"
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.SH "Opening an Existing Large Object"
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.PP
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To open an existing large object, call
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.nf
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@ -165,7 +157,6 @@ and
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.B lo_close .
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.\"-----------
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.SH "Writing Data to a Large Object"
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.SH "Writing Data to a Large Object"
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.PP
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The routine
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.nf
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@ -187,7 +178,6 @@ The number of bytes actually written is returned.
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In the event of an error,
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the return value is negative.
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.SH "Seeking on a Large Object"
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.SH "Seeking on a Large Object"
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.PP
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To change the current read or write location on a large object,
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call
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@ -207,7 +197,6 @@ and
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.SM SEEK_END.
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.\"-----------
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.SH "Closing a Large Object Descriptor"
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.SH "Closing a Large Object Descriptor"
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.PP
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A large object may be closed by calling
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.nf
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@ -223,7 +212,6 @@ On success,
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returns zero. On error, the return value is negative.
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.PP
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.SH "Built in registered functions"
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.SH "Built in registered functions"
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.PP
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There are two built-in registered functions,
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.I lo_import
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@ -241,12 +229,11 @@ CREATE TABLE image (
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INSERT INTO image (name, raster)
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VALUES ('beautiful image', lo_import('/etc/motd'));
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SELECT lo_export(image.raster, "/tmp/motd") from image
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SELECT lo_export(image.raster, '/tmp/motd') from image
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WHERE name = 'beautiful image';
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.fi
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.PP
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.SH "Accessing Large Objects from LIBPQ"
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.SH "Accessing Large Objects from LIBPQ"
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Below is a sample program which shows how the large object interface in
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\*(LP can be used. Parts of the program are commented out but are left
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in the source for the readers benefit. This program can be found in
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@ -262,7 +249,6 @@ and link with the
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library.
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.bp
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.SH "Sample Program"
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.SH "Sample Program"
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.nf
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/*-------------------------------------------------------------------------
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*
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@ -273,7 +259,7 @@ library.
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/man/Attic/large_objects.3,v 1.1 1996/11/14 10:17:24 scrappy Exp $
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* $Header: /cvsroot/pgsql/src/man/Attic/large_objects.3,v 1.2 1996/11/15 17:55:29 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -301,7 +287,7 @@ Oid importFile(PGconn *conn, char *filename)
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*/
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fd = open(filename, O_RDONLY, 0666);
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if (fd < 0) { /* error */
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fprintf(stderr, "can't open unix file\"%s\"\n", filename);
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fprintf(stderr, "can't open unix file\\"%s\\"\\n", filename);
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}
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/*
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@ -319,7 +305,7 @@ Oid importFile(PGconn *conn, char *filename)
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while ((nbytes = read(fd, buf, BUFSIZE)) > 0) {
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tmp = lo_write(conn, lobj_fd, buf, nbytes);
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if (tmp < nbytes) {
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fprintf(stderr, "error while reading \"%s\"", filename);
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fprintf(stderr, "error while reading \\"%s\\"", filename);
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}
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}
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@ -348,11 +334,11 @@ void pickout(PGconn *conn, Oid lobjId, int start, int len)
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nread = 0;
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while (len - nread > 0) {
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nbytes = lo_read(conn, lobj_fd, buf, len - nread);
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buf[nbytes] = '\0';
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buf[nbytes] = '\\0';
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fprintf(stderr,">>> %s", buf);
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nread += nbytes;
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}
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fprintf(stderr,"\n");
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fprintf(stderr,"\\n");
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lo_close(conn, lobj_fd);
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}
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@ -375,14 +361,14 @@ void overwrite(PGconn *conn, Oid lobjId, int start, int len)
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for (i=0;i<len;i++)
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buf[i] = 'X';
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buf[i] = '\0';
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buf[i] = '\\0';
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nwritten = 0;
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while (len - nwritten > 0) {
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nbytes = lo_write(conn, lobj_fd, buf + nwritten, len - nwritten);
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nwritten += nbytes;
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}
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fprintf(stderr,"\n");
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fprintf(stderr,"\\n");
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lo_close(conn, lobj_fd);
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}
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@ -413,7 +399,7 @@ void exportFile(PGconn *conn, Oid lobjId, char *filename)
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*/
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fd = open(filename, O_CREAT|O_WRONLY, 0666);
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if (fd < 0) { /* error */
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fprintf(stderr, "can't open unix file\"%s\"",
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fprintf(stderr, "can't open unix file\\"%s\\"",
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filename);
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}
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@ -423,7 +409,7 @@ void exportFile(PGconn *conn, Oid lobjId, char *filename)
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while ((nbytes = lo_read(conn, lobj_fd, buf, BUFSIZE)) > 0) {
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tmp = write(fd, buf, nbytes);
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if (tmp < nbytes) {
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fprintf(stderr,"error while writing \"%s\"",
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fprintf(stderr,"error while writing \\"%s\\"",
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filename);
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}
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}
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@ -451,7 +437,7 @@ main(int argc, char **argv)
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PGresult *res;
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if (argc != 4) {
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fprintf(stderr, "Usage: %s database_name in_filename out_filename\n",
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fprintf(stderr, "Usage: %s database_name in_filename out_filename\\n",
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argv[0]);
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exit(1);
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}
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@ -467,27 +453,27 @@ main(int argc, char **argv)
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/* check to see that the backend connection was successfully made */
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if (PQstatus(conn) == CONNECTION_BAD) {
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fprintf(stderr,"Connection to database '%s' failed.\n", database);
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fprintf(stderr,"Connection to database '%s' failed.\\n", database);
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fprintf(stderr,"%s",PQerrorMessage(conn));
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exit_nicely(conn);
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}
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res = PQexec(conn, "begin");
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PQclear(res);
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printf("importing file \"%s\" ...\n", in_filename);
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printf("importing file \\"%s\\" ...\\n", in_filename);
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/* lobjOid = importFile(conn, in_filename); */
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lobjOid = lo_import(conn, in_filename);
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/*
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printf("\tas large object %d.\n", lobjOid);
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printf("\\tas large object %d.\\n", lobjOid);
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printf("picking out bytes 1000-2000 of the large object\n");
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printf("picking out bytes 1000-2000 of the large object\\n");
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pickout(conn, lobjOid, 1000, 1000);
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printf("overwriting bytes 1000-2000 of the large object with X's\n");
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printf("overwriting bytes 1000-2000 of the large object with X's\\n");
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overwrite(conn, lobjOid, 1000, 1000);
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*/
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printf("exporting large object to file \"%s\" ...\n", out_filename);
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printf("exporting large object to file \\"%s\\" ...\\n", out_filename);
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/* exportFile(conn, lobjOid, out_filename); */
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lo_export(conn, lobjOid,out_filename);
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@ -1,6 +1,6 @@
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.\" This is -*-nroff-*-
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.\" XXX standard disclaimer belongs here....
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.\" $Header: /cvsroot/pgsql/src/man/Attic/libpq.3,v 1.1 1996/11/14 10:17:26 scrappy Exp $
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.\" $Header: /cvsroot/pgsql/src/man/Attic/libpq.3,v 1.2 1996/11/15 17:55:30 momjian Exp $
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.TH LIBPQ INTRO 03/12/94 Postgres95 Postgres95
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.SH DESCRIPTION
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Libpq is the programmer's interface to Postgres. Libpq is a set of
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@ -469,7 +469,7 @@ returns EOF at EOF, 0 if the entire line has been read, and 1 if the
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buffer is full but the terminating newline has not yet been read.
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.IP
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Notice that the application must check to see if a new line consists
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of the single character \*(lq.\*(rq, which indicates that the backend
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of the characters \*(lq\\.\*(rq, which indicates that the backend
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server has finished sending the results of the
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.I copy
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command. Therefore, if the application ever expects to receive lines
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@ -645,7 +645,7 @@ main()
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/* check to see that the backend connection was successfully made */
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if (PQstatus(conn) == CONNECTION_BAD) {
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fprintf(stderr,"Connection to database '%s' failed.\n", dbName);
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fprintf(stderr,"Connection to database '%s' failed.\\n", dbName);
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fprintf(stderr,"%s",PQerrorMessage(conn));
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exit_nicely(conn);
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}
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@ -656,7 +656,7 @@ main()
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/* start a transaction block */
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res = PQexec(conn,"BEGIN");
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if (PQresultStatus(res) != PGRES_COMMAND_OK) {
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fprintf(stderr,"BEGIN command failed\n");
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fprintf(stderr,"BEGIN command failed\\n");
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PQclear(res);
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exit_nicely(conn);
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}
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@ -667,7 +667,7 @@ main()
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/* fetch instances from the pg_database, the system catalog of databases*/
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res = PQexec(conn,"DECLARE mycursor CURSOR FOR select * from pg_database");
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if (PQresultStatus(res) != PGRES_COMMAND_OK) {
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fprintf(stderr,"DECLARE CURSOR command failed\n");
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fprintf(stderr,"DECLARE CURSOR command failed\\n");
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PQclear(res);
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exit_nicely(conn);
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}
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@ -675,7 +675,7 @@ main()
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res = PQexec(conn,"FETCH ALL in mycursor");
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if (PQresultStatus(res) != PGRES_TUPLES_OK) {
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fprintf(stderr,"FETCH ALL command didn't return tuples properly\n");
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fprintf(stderr,"FETCH ALL command didn't return tuples properly\\n");
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PQclear(res);
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exit_nicely(conn);
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}
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@ -685,14 +685,14 @@ main()
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for (i=0; i < nFields; i++) {
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printf("%-15s",PQfname(res,i));
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}
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printf("\n\n");
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printf("\\n\\n");
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/* next, print out the instances */
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for (i=0; i < PQntuples(res); i++) {
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for (j=0 ; j < nFields; j++) {
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printf("%-15s", PQgetvalue(res,i,j));
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}
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printf("\n");
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printf("\\n");
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}
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PQclear(res);
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@ -770,14 +770,14 @@ main()
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/* check to see that the backend connection was successfully made */
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if (PQstatus(conn) == CONNECTION_BAD) {
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fprintf(stderr,"Connection to database '%s' failed.\n", dbName);
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fprintf(stderr,"Connection to database '%s' failed.\\n", dbName);
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fprintf(stderr,"%s",PQerrorMessage(conn));
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exit_nicely(conn);
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}
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res = PQexec(conn, "LISTEN TBL2");
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if (PQresultStatus(res) != PGRES_COMMAND_OK) {
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fprintf(stderr,"LISTEN command failed\n");
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fprintf(stderr,"LISTEN command failed\\n");
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PQclear(res);
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exit_nicely(conn);
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}
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|
@ -789,12 +789,12 @@ main()
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/* async notification only come back as a result of a query*/
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/* we can send empty queries */
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res = PQexec(conn, " ");
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/* printf("res->status = %s\n", pgresStatus[PQresultStatus(res)]); */
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/* printf("res->status = %s\\n", pgresStatus[PQresultStatus(res)]); */
|
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/* check for asynchronous returns */
|
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notify = PQnotifies(conn);
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if (notify) {
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fprintf(stderr,
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"ASYNC NOTIFY of '%s' from backend pid '%d' received\n",
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"ASYNC NOTIFY of '%s' from backend pid '%d' received\\n",
|
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notify->relname, notify->be_pid);
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free(notify);
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break;
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|
@ -876,7 +876,7 @@ main()
|
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|
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/* check to see that the backend connection was successfully made */
|
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if (PQstatus(conn) == CONNECTION_BAD) {
|
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fprintf(stderr,"Connection to database '%s' failed.\n", dbName);
|
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fprintf(stderr,"Connection to database '%s' failed.\\n", dbName);
|
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fprintf(stderr,"%s",PQerrorMessage(conn));
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exit_nicely(conn);
|
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}
|
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|
|
@ -884,7 +884,7 @@ main()
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/* start a transaction block */
|
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res = PQexec(conn,"BEGIN");
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if (PQresultStatus(res) != PGRES_COMMAND_OK) {
|
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fprintf(stderr,"BEGIN command failed\n");
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fprintf(stderr,"BEGIN command failed\\n");
|
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PQclear(res);
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exit_nicely(conn);
|
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}
|
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|
|
@ -895,7 +895,7 @@ main()
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/* fetch instances from the pg_database, the system catalog of databases*/
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res = PQexec(conn,"DECLARE mycursor BINARY CURSOR FOR select * from test1");
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if (PQresultStatus(res) != PGRES_COMMAND_OK) {
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fprintf(stderr,"DECLARE CURSOR command failed\n");
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fprintf(stderr,"DECLARE CURSOR command failed\\n");
|
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PQclear(res);
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exit_nicely(conn);
|
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}
|
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|
|
@ -903,7 +903,7 @@ main()
|
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res = PQexec(conn,"FETCH ALL in mycursor");
|
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if (PQresultStatus(res) != PGRES_TUPLES_OK) {
|
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fprintf(stderr,"FETCH ALL command didn't return tuples properly\n");
|
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fprintf(stderr,"FETCH ALL command didn't return tuples properly\\n");
|
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PQclear(res);
|
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exit_nicely(conn);
|
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}
|
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|
|
@ -913,7 +913,7 @@ main()
|
|||
p_fnum = PQfnumber(res,"p");
|
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|
||||
for (i=0;i<3;i++) {
|
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printf("type[%d] = %d, size[%d] = %d\n",
|
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printf("type[%d] = %d, size[%d] = %d\\n",
|
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i, PQftype(res,i),
|
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i, PQfsize(res,i));
|
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}
|
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|
|
@ -931,12 +931,12 @@ main()
|
|||
pval = (POLYGON*) malloc(plen + VARHDRSZ);
|
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pval->size = plen;
|
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memmove((char*)&pval->npts, PQgetvalue(res,i,p_fnum), plen);
|
||||
printf("tuple %d: got\n", i);
|
||||
printf(" i = (%d bytes) %d,\n",
|
||||
printf("tuple %d: got\\n", i);
|
||||
printf(" i = (%d bytes) %d,\\n",
|
||||
PQgetlength(res,i,i_fnum), *ival);
|
||||
printf(" d = (%d bytes) %f,\n",
|
||||
printf(" d = (%d bytes) %f,\\n",
|
||||
PQgetlength(res,i,d_fnum), *dval);
|
||||
printf(" p = (%d bytes) %d points \tboundbox = (hi=%f/%f, lo = %f,%f)\n",
|
||||
printf(" p = (%d bytes) %d points \\tboundbox = (hi=%f/%f, lo = %f,%f)\\n",
|
||||
PQgetlength(res,i,d_fnum),
|
||||
pval->npts,
|
||||
pval->boundbox.xh,
|
||||
|
|
@ -960,3 +960,4 @@ main()
|
|||
|
||||
}
|
||||
.fi
|
||||
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
.\" This is -*-nroff-*-
|
||||
.\" XXX standard disclaimer belongs here....
|
||||
.\" $Header: /cvsroot/pgsql/src/man/Attic/psql.1,v 1.1 1996/11/14 10:17:50 scrappy Exp $
|
||||
.\" $Header: /cvsroot/pgsql/src/man/Attic/psql.1,v 1.2 1996/11/15 17:55:31 momjian Exp $
|
||||
.TH PSQL UNIX 1/20/96 Postgres95 Postgres95
|
||||
.SH NAME
|
||||
psql \(em run the interactive query front-end
|
||||
|
|
@ -343,7 +343,8 @@ When executed with the
|
|||
.BR "-c"
|
||||
option,
|
||||
.IR psql
|
||||
returns 0 to the shell on successful query completion, 1 otherwise.
|
||||
returns 0 to the shell on successful query completion, 1 for errors,
|
||||
2 for abrupt disconnection from the backend.
|
||||
.IR psql
|
||||
will also return 1 if the connection to a database could not be made for
|
||||
any reason.
|
||||
|
|
@ -352,8 +353,3 @@ introduction(libpq),
|
|||
monitor(1)
|
||||
postgres(1),
|
||||
postmaster(1).
|
||||
.SH BUGS
|
||||
If multiple queries are sent to the backend at once without semicolon
|
||||
termination after each query, psql gets confused about the query
|
||||
results. The queries will still be processed correctly by the backend.
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue