lib/sh/db.sh: pg_snapshot(): perform online backup if possible, to avoid needing to restart the server

lib/sh/db.sh: added pg_start_backup(), pg_stop_backup()

lib/sh/db.sh: psql(): only set redirs if can redirect

bugfix: psql(): when as_root is on, need to avoid redirections as these are not passed through by sudo

bugfix: lib/sh/db.sh: psql(): don't use `--file /dev/fd/40` when can't redirect

fix: lib/sh/db.sh: psql(): when using sudo with custom $stdin, raise error that this is not supported

lib/sh/db.sh: psql(): $data_bypasses_filter: renamed to $data2stdout for clarity

lib/sh/db.sh: psql(): $bypass_ok: renamed to $can_redir for clarity

lib/sh/db.sh: psql(): usage: $stdin: documented that can also use process substitution for this

lib/sh/sync.sh: db_copy() and callers: pass args as rsync options

lib/sh/db.sh: added pg_ctl(), pg_snapshot()

lib/sh/db.sh: mysql_snapshot(): use new db_snapshot()

lib/sh/db.sh: mysql_snapshot(): for large files, don't re-copy entire file

lib/sh/db.sh: mysql_snapshot(): use live mode as the default

fix: lib/sh/db.sh: mysql_snapshot(): need to create dest dir if doesn't exist

bugfix: lib/sh/db.sh: mysql_snapshot(): try: need to use split syntax with prep_try instead, to work with prefix vars

bugfix: lib/sh/db.sh: mysql_snapshot(): try: need to use split syntax with prep_try instead, to work with prefix vars

bugfix: lib/sh/db.sh: mysql_ctl(): need to ignore errors if not running

bugfix: lib/sh/db.sh: mysql_snapshot(): need to run `mysql_ctl start` even if there is an error

lib/sh/db.sh: mysql_snapshot(): $to: default to $from.bak

lib/sh/db.sh: added mysql_snapshot()

lib/sh/db.sh: added mysql_ctl()

lib/sh/db.sh: pg_cmd(): updated to use new sudo()

lib/sh/db.sh: pg_cmd(): $as_root: use $sudo

lib/sh/db.sh: removed no longer used pg_as_root(), which was buggy anyway. use `as_root=1 ...` instead.

lib/sh/db.sh: mysql_ANSI: fixed comment

lib/sh/db.sh: pg_dump(): support dumping entire cluster, and cluster users

lib/sh/db.sh: pg_cmd(): added $as_root switch

lib/sh/db.sh pg_dump(), bin/pg_dump_vegbien: --format=plain: removed comment that this is the plain format, because this is now self-documenting

lib/sh/db.sh pg_dump(), bin/pg_dump_vegbien: --format: use the long form of the formats to make the code self-documenting

bugfix: lib/sh/db.sh: pg_table_exists(): need ! to negate boolean result

fix: lib/sh/db.sh: pg_cmd(): hide PGPASSWORD at the normal verbosity so that the value of it doesn't appear in any log files

lib/sh/util.sh: clog*: renamed to log* for clarity (possible now that log* is no longer used for function-local log_level setting)

: local setting of log_level: use log_local instead of relying on the log aliases, so that these aliases can instead be used for wrapping commands (the more common use case)

lib/sh/db.sh: pg_*_exists(): log the DB statements to check this at a higher log_level so that they don't clutter up the log output

*{.sh,run}: stderr_matches() wrapper calls: removed no longer needed prep_try/rethrow

fix: lib/sh/db.sh: pg_table_exists(): use stderr_matches() rather than just the exit status. this also avoids highlighting the benign error.

stderr_matches(): wrapper caller usage: added alternative usage when using `||`

fix: *{.sh,run}: stderr_matches() wrappers: usage: added `rethrow`

bugfix: lib/sh/db.sh: pg_schema_exists(): need to ignore benign error exit status from the "cannot create temporary relation in non-temporary schema" error

lib/sh/db.sh: psql(): $verbose_ok: renamed to $bypass_ok for clarity, because this applies only to the `--output /dev/fd/41` bypass (which when not possible, requires turning off verbose output

fix: lib/sh/db.sh: psql(): added $output_data switch analogous to what mysql() has. this causes query results of eg. void-returning functions to be correctly filtered by the logging mechanism, rather than output to stdout.

fix: lib/sh/db.sh: psql(): verbosity=0 (errors only) mode: use `SET client_min_messages = WARNING;` instead of NOTICE to hide verbose messages within psql as well

lib/sh/db.sh: psql(): replaced `test "$verbose_ok" && can_log` with bool var $verbose_

fix: lib/sh/db.sh: psql(): $verbose_: renamed to $verbose_ok for clarity

bugfix: lib/sh/util.sh: die_error_hidden(): min verbosity to display error should not be hardcoded

lib/sh/db.sh: psql(): "to see error details" msg: use new die_error_hidden()

lib/sh/db.sh: psql(): "to see error details" msg: use new log_hint()

bugfix: lib/sh/db.sh: psql(): "to see error details" msg: also don't print it for benign errors ($benign_error)

lib/sh/db.sh: psql(): on error, display message describing how to see error details (prepend `vb=2` to the command)

lib/sh/util.sh: stderr_matches(): inline the stderr_matches alias to avoid needing to quote stderr_matches as "stderr_matches" in the most common use case (with pattern as a prefix env var)

bugfix: lib/sh/util.sh: stderr_matches(): when passing `pattern=...` as a prefix env var, must be invoked as `"stderr_matches"` to avoid the env var applying to the prep_try portion of the stderr_matches alias

*{.sh,run}: stderr_matches calls: don't need to wrap the command in `"try"` because stderr_matches now does this

lib/sh/db.sh: pg_dump(): ignore "No matching tables were found" error, using new ignore_err_msg()

lib/sh/db.sh: pg_schema_exists(): documented that `try` is used to suppress the error exit status

moved everything into /trunk/ to create the standard svn layout, for use with tools that require this (eg. git-svn). IMPORTANT: do NOT do an `svn up`. instead, re-use your working copy's existing files with `svn switch` (http://svnbook.red-bean.com/en/1.6/svn.ref.svn.c.switch.html).

lib/sh/db.sh: added pg_require_schema()

lib/sh/db.sh: added pg_schema_exists()

fix: lib/sh/db.sh: pg_table_exists(): usage: documented that $table is actually required for this function

lib/sh/util.sh: import_vars: don't overwrite vars that are already defined, to allow the caller to specify their own values for the vars to create. this requires callers that rely on the overwriting functionality to reverse the order in which they run use_* commands, so that the higher-precedence use_* is applied first and the other one as the default values for the first.

lib/sh/db.sh: pg_table_exists(): use `SELECT NULL` instead of `SELECT *` to avoid a long column list cluttering up the log output

lib/sh/db.sh: added pg_table_exists()

lib/sh/db.sh: mk_select(): usage: documented that this also takes a $limit/$n param

lib/sh/db.sh: limit(): also support using $n as the limit param, since this var name is used by other parts of the import process

lib/sh/db.sh: limit(): usage: documented that this also need a $limit param

bugfix: lib/sh/db.sh: avoid outputting to /dev/fd/# when running as sudo on Linux, because this causes a "Permission denied" error (due to the /dev/fd/# file being owned by a different user). this is not a problem with normal redirects (>&#), because they do not use /dev/fd/# files which can have access permissions.

lib/sh/db.sh: pg_as_root(): run sudo with echo_run to help debug

bugfix: lib/sh/db.sh: pg_cmd(): only set PG* connection/login env vars when the corresponding var is non-empty. there are some situations in which these must be unset (in order to use the default value), and other situations when the var must be set to something (i.e. "") to avoid it being defaulted to a value in local.sh > connection vars.

bugfix: lib/sh/local.sh: pg_as_root(): need to use -E (preserve environment) option to sudo, so that $schema, $table get passed through

lib/sh/db.sh: added pg_as_root()

lib/sh/db.sh: mysql_cmd(): added caller usage with connection/login opts

lib/sh/db.sh: mysql(), mysql_export(): usage: added database=...

lib/sh/db.sh: mk_select(): added support for ORDER BY

lib/sh/db.sh: added pg_export_table_to_dir(), analogous to pg_export_table_to_dir_no_header()

bugfix: lib/sh/db.sh: pg_dump(): don't default $struct flag to on, because both structure and data should be printed by default

lib/sh/db.sh: pg_dump(): added create_schema= flag to remove CREATE SCHEMA statements (useful if the schema already exists)

lib/sh/db.sh: added pg_dump(), using the code in bin/pg_dump_vegbien with clarity improvements

lib/sh/db.sh: added pg_cmd() (analogous to mysql_cmd() for PostgreSQL), and use it in psql(), so that other PostgreSQL operations can use this to set the PG* connection/login vars

lib/sh/db.sh: pg_export(): added usage

lib/sh/db.sh: mysqldump(): added create_db=1 flag to print the CREATE DATABASE statement

lib/sh/db.sh: mysqldump(): don't use --compatible=postgresql when the table structure is being exported, because this removes the table options (which include the COMMENT attribute). --compatible=postgresql remains on in data-only mode because embedded ` in data cannot easily be distinguished from ` around column names, so ANSI_QUOTES is needed to do the translation to " (and data sections do not contain table options). note that all --compatible modes that offer ANSI_QUOTES unfortunately exclude the table options, and there is no way to run a SQL query to set the SQL mode before beginning the dump, so ANSI_QUOTES translation must be handled by my2pg instead.

lib/sh/db.sh: mk_select(): support passing $cols as array instead of SQL string, which is easier to enter in a shell script (less quotes, \ , etc.)

lib/sh/db.sh: added cols2list()

lib/sh/db.sh: psql(): display stack traces and DETAIL sections of error messages at verbosity 2+, to help debugging (previously they were always turned off). in particular, the DETAIL section of a "duplicate key value violates unique constraint" error is useful because it contains the duplicated key.

lib/sh/db.sh: psql(): hide the verbose CONTEXT information that is output with each NOTICE by setting the VERBOSITY psql var to terse (postgresql.1045698.n5.nabble.com/Quiet-quot-CONTEXT-quot-td1906036.html#a1906037)

*{.sh,run}: use new log-() instead of log+() with a negative #

lib/sh/db.sh: set test mode when using limited # rows

*{.sh,run}: use mysql instead of mysql_ANSI because mysql is now an alias to mysql_ANSI (since ANSI mode still supports key MySQL features, like `` quotes)

lib/sh/db.sh: moved mysql_root() after the mysql->mysql_ANSI alias (and load new aliases) so that it will also use ANSI mode and support "" identifiers

lib/sh/db.sh: mysql: always use ANSI mode, to support "" identifiers. note that `` are still supported in this mode, so it also works with SHOW CREATE TABLE output and dumpfiles.

lib/sh/db.sh: mysql_cmd(): run the command with `time` because in mysql()'s output_data mode, no queries, and therefore no runtimes, are echoed, so the total runtime needs to be echoed separately instead. the total runtime is also useful in general, when many long-running queries are run and you would also like to know the total time (e.g. in make_analytical_db).

lib/sh/db.sh: limit(): usage: surrounded query in "" to clarify that it's a string, not a command

lib/sh/db.sh: added set_large_table alias, used to set to_file's $del flag based on $limit

lib/sh/db.sh: mysql_cmd(): use --quick to avoid buffering entire result (which is slow and memory-intensive for large result sets). this option applies to both mysql() and mysqldump().

lib/sh/db.sh: mysql_import(): in append mode, use LOAD DATA IGNORE to allow inserting duplicate rows

bugfix: lib/sh/util.sh: convention of fds to use for command-specific alternate stdin/stdout/stderr: changed to 40/41/42 because 10/11/12 are used by eval (which is used by set_fds()). use of fd 10/11/12 will cause hard-to-find silent bugs because exec will not print an error when these are used. documented why not to use other series of fds for this purpose:...

lib/sh/db.sh: psql(): set $PG* connection env vars from our connection vars ($server, $user, etc.). use use_pg to import $database so it can be different from $database for MySQL

lib/sh/db.sh: added use_pg alias

bugfix: lib/sh/db.sh: psql(): added missing `--set ON_ERROR_STOP=1 --quiet` opts from psql_script_vegbien

lib/sh/db.sh: added psql(), which replaces psql_script_vegbien and psql_verbose_vegbien for general connections. it also supports separate command and stdin files, to allow using `\copy from pstdin`, with pstdin pointing to a separate, EOF-terminated CSV file instead of inlined with the command and terminated with the \. escape (which may be contained within the CSV file itself).