├── postgresqlite
└── readme.md


/postgresqlite:
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 1 | #!/usr/bin/env bash
 2 | set -Eeuo pipefail # https://vaneyckt.io/posts/safer_bash_scripts_with_set_euxo_pipefail/#:~:text=set%20%2Du,is%20often%20highly%20desirable%20behavior.
 3 | 
 4 | DATADIR=$(realpath "$1")
 5 | CONTAINER_NAME="postgres-${DATADIR//[^a-zA-Z0-9_.-]/_}"
 6 | IMAGE='postgres:latest'
 7 | COMMAND=''
 8 | if [ -n "${2-}" ]; then
 9 |     COMMAND="-c \"$2\""
10 | fi
11 | 
12 | if [ -t 0 ]; then
13 |     # used interactively
14 |     INTERACTIVE="-it"
15 | else
16 |     # got stdin
17 |     INTERACTIVE="-i"
18 | fi
19 | 
20 | POSTGRES_OPTS="-c 'max_connections=200' -c 'shared_buffers=4GB' -c 'effective_cache_size=12GB' -c 'maintenance_work_mem=1GB' -c 'checkpoint_completion_target=0.7' -c 'wal_buffers=16MB' -c 'default_statistics_target=100' -c 'random_page_cost=1.1' -c 'effective_io_concurrency=200' -c 'work_mem=1GB' -c 'min_wal_size=1GB' -c 'max_wal_size=2GB' -c 'max_worker_processes=8' -c 'max_parallel_workers_per_gather=8' -c 'max_parallel_workers=8'"
21 | 
22 | 
23 | mkdir -p "$DATADIR"
24 | docker run --rm \
25 |     "$INTERACTIVE" \
26 |     --name "$CONTAINER_NAME" \
27 |     -v "$DATADIR":/var/lib/postgresql/data \
28 |     -e POSTGRES_PASSWORD=mysecretpassword \
29 |     --user $UID \
30 |     --shm-size=8g \
31 |     "$IMAGE" \
32 |     bash -c "(./docker-entrypoint.sh postgres $POSTGRES_OPTS &) &>/dev/null; until pg_isready -U postgres &>/dev/null; do sleep 0.1; done; psql -U postgres -d postgres --echo-all -v ON_ERROR_STOP=1 $COMMAND; EXIT_CODE=\$?; pg_ctl stop &>/dev/null; exit \$EXIT_CODE"
33 | 
34 | 


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/readme.md:
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 1 | # PostgreSQLite
 2 | 
 3 | Use postgres like sqlite.
 4 | 
 5 | # Example Usage
 6 | 
 7 | ```bash
 8 | $ postgresqlite test-db "create table numbers(id serial primary key, number real not null)"
 9 | create table numbers(id serial primary key, number real not null)
10 | CREATE TABLE
11 | 
12 | $ postgresqlite test-db "insert into numbers (number) values (5)"
13 | insert into numbers (number) values (5)
14 | INSERT 0 1
15 | 
16 | $ postgresqlite test-db "select * from numbers"
17 | select * from numbers
18 |  id | number 
19 | ----+--------
20 |   1 |      5
21 | (1 row)
22 | 
23 | $ du -sh test-db
24 | 40M	test-db
25 | ```
26 | 
27 | 
28 | 
29 | # Install
30 | 
31 | Requires: `docker`.
32 | 
33 | Add the postgresqlite script to your path.
34 | 
35 | ```bash
36 | # for example
37 | PATH=$PATH:$HOME/projects/postgresqlite
38 | ```
39 | 
40 | 
41 | 


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