From d87cb163d0a420c39e6a3afb8973e451a0f17531 Mon Sep 17 00:00:00 2001 From: Austin Date: Tue, 21 Mar 2023 20:26:22 +0000 Subject: [PATCH] Stepped on another rake --- docs/database_migration.md | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/docs/database_migration.md b/docs/database_migration.md index aed0d99..cf29b81 100644 --- a/docs/database_migration.md +++ b/docs/database_migration.md @@ -29,7 +29,7 @@ If it succeeds, you can proceed to the next step. ## Create a dump of existing data We want to dump (almost) all existing values to some file - the exception being the `metadata` table (and sometimes -the `sqlite_sequence`, when it exists). Be sure to stop/pause LLDAP during this step, as some +the `sqlite_sequence` table, when it exists). Be sure to stop/pause LLDAP during this step, as some databases (SQLite in this example) will give an error if LLDAP is in the middle of a write. The dump should consist just INSERT statements. There are various ways to do this, but a simple enough way is filtering a whole database dump. This repo contains [a script](/scripts/sqlite_dump_commands.sh) to generate SQLite commands for creating an appropriate dump: @@ -57,12 +57,13 @@ sed -i -r -e "s/X'([[:xdigit:]]+'[^'])/'\\\x\\1/g" \ ### To MySQL -MySQL mostly cooperates, but it gets some errors if you don't escape the `groups` table. Run the +MySQL mostly cooperates, but it gets some errors if you don't escape the `groups` table. It also uses +backticks to escape table name instead of quotes. Run the following command to wrap all table names in backticks for good measure, and wrap the inserts in a transaction: ``` -sed -i -r -e 's/^INSERT INTO ([a-zA-Z0-9_]+)/INSERT INTO `\1`/' \ +sed -i -r -e 's/^INSERT INTO "?([a-zA-Z0-9_]+)"?/INSERT INTO `\1`/' \ -e '1s/^/START TRANSACTION;\n/' \ -e '$aCOMMIT;' /path/to/dump.sql ``` @@ -74,7 +75,7 @@ strings. Use the following command to remove those and perform the additional My ``` sed -i -r -e "s/([^']'[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{9})\+00:00'([^'])/\1'\2/g" \ --e 's/^INSERT INTO ([a-zA-Z0-9_]+)/INSERT INTO `\1`/' \ +-e 's/^INSERT INTO "?([a-zA-Z0-9_]+)"?/INSERT INTO `\1`/' \ -e '1s/^/START TRANSACTION;\n/' \ -e '$aCOMMIT;' /path/to/dump.sql ```