pg_dump again
| От | Mikhail Terekhov |
|---|---|
| Тема | pg_dump again |
| Дата | |
| Msg-id | 369D066B.697D19BB@emc.com обсуждение исходный текст |
| Ответы |
Re: [HACKERS] pg_dump again
(Tom Lane <tgl@sss.pgh.pa.us>)
|
| Список | pgsql-hackers |
Hi,
It seems that pg_dump (in 6.4.2) still has a problem when quoting
\ and ' when these characters appears together.
Consider the following example:
terekhov=> create table test (i int, t text);
CREATE
terekhov=> insert into test values (1,'');
INSERT 19066 1
terekhov=> insert into test values (2,'abcd');
INSERT 19067 1
terekhov=> insert into test values (3,'\\');
INSERT 19068 1
terekhov=> insert into test values (4,'\'');
INSERT 19069 1
terekhov=> insert into test values (5,'\\\'');
INSERT 19070 1
terekhov=> select * from test;
i|t
-+----
1|
2|abcd
3|\
4|'
5|\'
(5 rows)
terekhov=> \q
terekhov(575)~>pg_dump -d -D -f ter.db terekhov
terekhov(576)~>cat ter.db
CREATE TABLE "test" ("i" int4,"t" text);
INSERT INTO "test" ("i","t") values (1,'');
INSERT INTO "test" ("i","t") values (2,'abcd');
INSERT INTO "test" ("i","t") values (3,'\');
INSERT INTO "test" ("i","t") values (4,'''');
INSERT INTO "test" ("i","t") values (5,'\'''); ^ wrong quoting
here-----|
terekhov(577)~>psql
Welcome to the POSTGRESQL interactive sql monitor: Please read the file COPYRIGHT for copyright terms of POSTGRESQL
type \? for help on slash commands type \q to quit type \g or terminate with semicolon to execute queryYou are
currentlyconnected to the database: terekhov
terekhov=> alter table test rename to test0;
RENAME
terekhov=> \q
terekhov(578)~>psql -e <ter.db
CREATE TABLE "test" ("i" int4,"t" text);
QUERY: CREATE TABLE "test" ("i" int4,"t" text);
CREATE
INSERT INTO "test" ("i","t") values (1,'');
QUERY: INSERT INTO "test" ("i","t") values (1,'');
INSERT 19082 1
INSERT INTO "test" ("i","t") values (2,'abcd');
QUERY: INSERT INTO "test" ("i","t") values (2,'abcd');
INSERT 19083 1
INSERT INTO "test" ("i","t") values (3,'\');
INSERT INTO "test" ("i","t") values (4,'''');
INSERT INTO "test" ("i","t") values (5,'\''');\? -- help\a -- toggle field-alignment (currently
on)\C[<captn>] -- set html3 caption (currently '')\connect <dbname|-> <user> -- connect to new database (currently
'terekhov')\copytable {from | to} <fname>\d [<table>] -- list tables and indices, columns in <table>, or * for all\da
-- list aggregates\dd [<object>]- list comment for table, field, type, function, or operator.\df -- list
functions\di -- list only indices\do -- list operators\ds -- list only sequences\dS
--list system tables and indexes\dt -- list only tables\dT -- list types\e [<fname>] -- edit the
currentquery buffer or <fname>\E [<fname>] -- edit the current query buffer or <fname>, and execute\f [<sep>] --
changefield separater (currently '|')\g [<fname>] [|<cmd>] -- send query to backend [and results in <fname> or pipe]\h
[<cmd>] -- help on syntax of sql commands, * for all commands\H -- toggle html3 output (currently off)\i
<fname> -- read and execute queries from filename\l -- list all databases\m -- toggle monitor-like
tabledisplay (currently off)\o [<fname>] [|<cmd>] -- send all query results to stdout, <fname>, or pipe\p --
printthe current query buffer\q -- quit\r -- reset(clear) the query buffer\s [<fname>] -- print
historyor save it in <fname>\t -- toggle table headings and row count (currently on)\T [<html>] -- set
html3.0<table ...> options (currently '')\x -- toggle expanded output (currently off)\w <fname> -- output
currentbuffer to a file\z -- list current grant/revoke permissions\! [<cmd>] -- shell escape or command
EOF
Regards,
Mikhail Terekhov
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