Commit Graph

11 Commits

Author SHA1 Message Date
Alexei Sorokin
a38c608420 [SCHEMA] Better DBMS information fetching
On PostgreSQL:
  - Parse defaults for strings and booleans properly.
  - Parse the "serial" definition type properly.
  - Get information on the "enum" definition type.
  - Re-work getting information about keys/indices.

On MariaDB:
  - Get information about lengths in indices.
  - Get foreign key information separately from the rest as they can have
    colliding names.
2020-08-01 19:05:48 +03:00
Alexei Sorokin
1870f38099 [SCHEMA] Fix a few mistakes 2020-07-31 18:24:12 +03:00
Alexei Sorokin
31dcf99e61 [DATABASE] Make unprefixed schema.php a bit more DBMS-neutral 2020-07-23 18:12:01 +03:00
Alexei Sorokin
7081720ecb [DATABASE] Check SQL boolean values with "IS TRUE"
This way UNKNOWN (NULL) explicitly turns to FALSE when three-valued logic is
reduced to binary.
In pgsqlschema, however, use "IS FALSE" as boolean attributes in pg_index are
non-nullable, there is no outer join and there's no clear preference for NULL
reduction.

Over-complicated constructions in TagCloud queries have been simplified, which
should not affect their performance.

Additionally, in TagCloud's lib/subscriptionspeopleselftagcloudsection.php
a typing mistake in an equi-join of "profile_tag" and "profile_list" on
"tagger" was fixed.
That regression was introduced in f446db8e2a
2020-07-21 18:06:39 +03:00
Alexei Sorokin
9a515b9234 [SCHEMA] Improve timestamp storage
Avoid the use of deprecated MariaDB "zero dates" globally. If they're present
as attribute defaults somewhere, they will be replaced with NULL implicitly.
The existing "zero dates" in MariaDB storage will be left intact and this
should not present any issues.

The "timestamp" type in table definitions now corresponds to DATETIME in
MariaDB with "DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP", which
should be close enough to the original behaviour for compatibility purposes.
It is now the recommended type for "modified" attributes, because of the
update trigger on MariaDB. But there is no such trigger implemented on
PostgreSQL as of this moment.
2020-06-29 01:41:46 +03:00
Alexei Sorokin
b924c180ae [DATABASE] Fix MariaDB schema verification 2020-06-28 20:05:11 +03:00
Alexei Sorokin
ee7f0a2016 [DATABASE] Re-introduce PostgreSQL support 2019-09-11 14:14:40 +03:00
Alexei Sorokin
7ee8aa7838 [DATABASE] Re-introduce the enum type abstraction 2019-09-11 12:48:28 +03:00
Alexei Sorokin
62b90c29db [DATABASE] Introduce a bool type in schema
PostgreSQL has a clear distinction between integers and booleans, so it makes
sense to draw a clear line.
2019-09-11 11:25:39 +03:00
Alexei Sorokin
5b797328f2 [DATABASE] Always quote identifiers
The code used to operate under the assumption that MariaDB doesn't support
quoting identifiers. Not only is that not exactly true, but MariaDB has
reserved keywords that cannot be used as table or column names unquoted.
2019-09-11 08:15:16 +03:00
Miguel Dantas
58bde08425 [LIB_REFACTOR] Moving files into separate semantic categories 2019-09-03 03:33:13 +01:00