https://github.com/dverite/postgresql-functions
Custom PostgreSQL functions and extensions
https://github.com/dverite/postgresql-functions
Last synced: 4 months ago
JSON representation
Custom PostgreSQL functions and extensions
- Host: GitHub
- URL: https://github.com/dverite/postgresql-functions
- Owner: dverite
- License: postgresql
- Created: 2018-03-12T14:53:16.000Z (about 7 years ago)
- Default Branch: master
- Last Pushed: 2024-09-06T15:44:56.000Z (7 months ago)
- Last Synced: 2024-09-06T18:48:44.830Z (7 months ago)
- Language: PLpgSQL
- Size: 50.8 KB
- Stars: 147
- Watchers: 9
- Forks: 34
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
- jimsghstars - dverite/postgresql-functions - Custom PostgreSQL functions and extensions (PLpgSQL)
README
# PostgreSQL functions
A repository of custom PostgreSQL functions and extensions.
## admin/db\_creation\_date
A `plperlu` function returning the creation date of a database,
based on the creation time of the database directory
under `$PGATA/base`.
## diff_tables
A simple plpgsql function that takes two table names (through the
`regclass` type), builds a query comparing their contents, runs
it, and returns a set of diff-like results with the rows that differ.
It does not require a primary key on tables to compare.
## dynamic_pivot
Return a CURSOR pointing to pivoted results of a query passed as the
1st parameter, with sorted headers passed as a query as the 2nd
parameter.
See https://postgresql.verite.pro/blog/2018/06/19/crosstab-pivot.html for
a lot of context about this function.
## global_search
A `plpgsql` function that finds occurrences of a string or more
generally perform any kind of text-based matching in all or some of the
tables of an entire database.
It returns the table, column name, `ctid` and column's value of the rows
that match.
The search can be limited to an array of tables and/or of
schemas. Progress is optionally reported by emitting `raise info`
messages.
## hamming_weight
C functions that return the number of bits set to `1` in a bytea, int
or bigint value. The `bytea` variant is available as a built-in function
(named `bit_count`) since PostgreSQL 14.
## large_objects
### lo_size
A plpgsql function that returns the size of a given large object.
### lo_digest
A plperlu function that returns the digest (hash output) of a large
object for any hash supported by perl's Digest module.
## strings/parse_option
A simple function to parse name=value settings.
## strings/plperl/multi_replace
Replace strings by other strings within a larger text, with
Perl s// operator, in a single pass.
Each string in the first array is replaced by the element at the same
index in the second array.
## strings/utf8_truncate
Truncate an UTF-8 string to a given number of bytes, respecting the
constraint that any multibyte sequence at the end must be complete.
## tsearch/dict_maxlen
A text search dictionary to filter out tokens longer than a given length.
## psql-cli
psqlrc declarations, companion scripts, tricks for the psql command-line interpreter.