* add new practice exercise: pangram

config.json

@@ -106,6 +106,14 @@
         "prerequisites": [],
         "difficulty": 2
       },
+      {
+        "slug": "pangram",
+        "name": "Pangram",
+        "uuid": "f11e9d34-d454-42a8-bd2f-d1a8b6000975",
+        "practices": [],
+        "prerequisites": [],
+        "difficulty": 2
+      },
       {
         "slug": "raindrops",
         "name": "Raindrops",

exercises/practice/pangram/.docs/instructions.md

@@ -0,0 +1,8 @@
+# Instructions
+
+Your task is to figure out if a sentence is a pangram.
+
+A pangram is a sentence using every letter of the alphabet at least once.
+It is case insensitive, so it doesn't matter if a letter is lower-case (e.g. `k`) or upper-case (e.g. `K`).
+
+For this exercise, a sentence is a pangram if it contains each of the 26 letters in the English alphabet.

exercises/practice/pangram/.docs/introduction.md

@@ -0,0 +1,16 @@
+# Introduction
+
+You work for a company that sells fonts through their website.
+They'd like to show a different sentence each time someone views a font on their website.
+To give a comprehensive sense of the font, the random sentences should use **all** the letters in the English alphabet.
+
+They're running a competition to get suggestions for sentences that they can use.
+You're in charge of checking the submissions to see if they are valid.
+
+~~~~exercism/note
+Pangram comes from Greek, παν γράμμα, pan gramma, which means "every letter".
+
+The best known English pangram is:
+
+> The quick brown fox jumps over the lazy dog.
+~~~~

exercises/practice/pangram/.meta/config.json

@@ -0,0 +1,19 @@
+{
+  "authors": [
+    "jimmytty"
+  ],
+  "files": {
+    "solution": [
+      "pangram.sql"
+    ],
+    "test": [
+      "pangram_test.sql"
+    ],
+    "example": [
+      ".meta/example.sql"
+    ]
+  },
+  "blurb": "Determine if a sentence is a pangram.",
+  "source": "Wikipedia",
+  "source_url": "https://en.wikipedia.org/wiki/Pangram"
+}

exercises/practice/pangram/.meta/example.sql

@@ -0,0 +1,29 @@
+UPDATE pangram
+   SET result = (
+         INSTR(LOWER(sentence), 'a') > 0
+     AND INSTR(LOWER(sentence), 'b') > 0
+     AND INSTR(LOWER(sentence), 'c') > 0
+     AND INSTR(LOWER(sentence), 'd') > 0
+     AND INSTR(LOWER(sentence), 'e') > 0
+     AND INSTR(LOWER(sentence), 'f') > 0
+     AND INSTR(LOWER(sentence), 'g') > 0
+     AND INSTR(LOWER(sentence), 'h') > 0
+     AND INSTR(LOWER(sentence), 'i') > 0
+     AND INSTR(LOWER(sentence), 'j') > 0
+     AND INSTR(LOWER(sentence), 'k') > 0
+     AND INSTR(LOWER(sentence), 'l') > 0
+     AND INSTR(LOWER(sentence), 'm') > 0
+     AND INSTR(LOWER(sentence), 'n') > 0
+     AND INSTR(LOWER(sentence), 'o') > 0
+     AND INSTR(LOWER(sentence), 'p') > 0
+     AND INSTR(LOWER(sentence), 'q') > 0
+     AND INSTR(LOWER(sentence), 'r') > 0
+     AND INSTR(LOWER(sentence), 's') > 0
+     AND INSTR(LOWER(sentence), 't') > 0
+     AND INSTR(LOWER(sentence), 'u') > 0
+     AND INSTR(LOWER(sentence), 'v') > 0
+     AND INSTR(LOWER(sentence), 'w') > 0
+     AND INSTR(LOWER(sentence), 'x') > 0
+     AND INSTR(LOWER(sentence), 'y') > 0
+     AND INSTR(LOWER(sentence), 'z') > 0
+   );

exercises/practice/pangram/.meta/tests.toml

@@ -0,0 +1,45 @@
+# This is an auto-generated file.
+#
+# Regenerating this file via `configlet sync` will:
+# - Recreate every `description` key/value pair
+# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
+# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
+# - Preserve any other key/value pair
+#
+# As user-added comments (using the # character) will be removed when this file
+# is regenerated, comments can be added via a `comment` key.
+
+[64f61791-508e-4f5c-83ab-05de042b0149]
+description = "empty sentence"
+
+[74858f80-4a4d-478b-8a5e-c6477e4e4e84]
+description = "perfect lower case"
+
+[61288860-35ca-4abe-ba08-f5df76ecbdcd]
+description = "only lower case"
+
+[6564267d-8ac5-4d29-baf2-e7d2e304a743]
+description = "missing the letter 'x'"
+
+[c79af1be-d715-4cdb-a5f2-b2fa3e7e0de0]
+description = "missing the letter 'h'"
+
+[d835ec38-bc8f-48e4-9e36-eb232427b1df]
+description = "with underscores"
+
+[8cc1e080-a178-4494-b4b3-06982c9be2a8]
+description = "with numbers"
+
+[bed96b1c-ff95-45b8-9731-fdbdcb6ede9a]
+description = "missing letters replaced by numbers"
+
+[938bd5d8-ade5-40e2-a2d9-55a338a01030]
+description = "mixed case and punctuation"
+
+[2577bf54-83c8-402d-a64b-a2c0f7bb213a]
+description = "case insensitive"
+include = false
+
+[7138e389-83e4-4c6e-8413-1e40a0076951]
+description = "a-m and A-M are 26 different characters but not a pangram"
+reimplements = "2577bf54-83c8-402d-a64b-a2c0f7bb213a"

exercises/practice/pangram/create_fixture.sql

@@ -0,0 +1,10 @@
+DROP TABLE IF EXISTS pangram;
+CREATE TABLE pangram (
+    sentence TEXT    NOT NULL,
+    result   BOOLEAN
+);
+
+.mode csv
+.import ./data.csv pangram
+
+UPDATE pangram SET result = NULL;

exercises/practice/pangram/create_test_table.sql

@@ -0,0 +1,28 @@
+DROP TABLE IF EXISTS tests;
+CREATE TABLE IF NOT EXISTS tests (
+    -- uuid and description are taken from the test.toml file
+    uuid TEXT PRIMARY KEY,
+    description TEXT NOT NULL,
+    -- The following section is needed by the online test-runner
+    status TEXT DEFAULT 'fail',
+    message TEXT,
+    output TEXT,
+    test_code TEXT,
+    task_id INTEGER DEFAULT NULL,
+    -- Here are columns for the actual tests
+    sentence TEXT    NOT NULL,
+    expected BOOLEAN NOT NULL
+);
+
+INSERT INTO tests (uuid, description, sentence, expected)
+    VALUES
+        ('64f61791-508e-4f5c-83ab-05de042b0149','empty sentence','',false),
+        ('74858f80-4a4d-478b-8a5e-c6477e4e4e84','perfect lower case','abcdefghijklmnopqrstuvwxyz',true),
+        ('61288860-35ca-4abe-ba08-f5df76ecbdcd','only lower case','the quick brown fox jumps over the lazy dog',true),
+        ('6564267d-8ac5-4d29-baf2-e7d2e304a743','missing the letter ''x''','a quick movement of the enemy will jeopardize five gunboats',false),
+        ('c79af1be-d715-4cdb-a5f2-b2fa3e7e0de0','missing the letter ''h''','five boxing wizards jump quickly at it',false),
+        ('d835ec38-bc8f-48e4-9e36-eb232427b1df','with underscores','the_quick_brown_fox_jumps_over_the_lazy_dog',true),
+        ('8cc1e080-a178-4494-b4b3-06982c9be2a8','with numbers','the 1 quick brown fox jumps over the 2 lazy dogs',true),
+        ('bed96b1c-ff95-45b8-9731-fdbdcb6ede9a','missing letters replaced by numbers','7h3 qu1ck brown fox jumps ov3r 7h3 lazy dog',false),
+        ('938bd5d8-ade5-40e2-a2d9-55a338a01030','mixed case and punctuation','"Five quacking Zephyrs jolt my wax bed."',true),
+        ('7138e389-83e4-4c6e-8413-1e40a0076951','a-m and A-M are 26 different characters but not a pangram','abcdefghijklm ABCDEFGHIJKLM',false);

exercises/practice/pangram/data.csv

@@ -0,0 +1,11 @@
+"",""
+"abcdefghijklmnopqrstuvwxyz",""
+"the quick brown fox jumps over the lazy dog",""
+"a quick movement of the enemy will jeopardize five gunboats",""
+"five boxing wizards jump quickly at it",""
+"the_quick_brown_fox_jumps_over_the_lazy_dog",""
+"the 1 quick brown fox jumps over the 2 lazy dogs",""
+"7h3 qu1ck brown fox jumps ov3r 7h3 lazy dog",""
+"""Five quacking Zephyrs jolt my wax bed.""",""
+"the quick brown fox jumps over with lazy FX",""
+"abcdefghijklm ABCDEFGHIJKLM",""

exercises/practice/pangram/pangram.sql

@@ -0,0 +1,2 @@
+-- Schema: CREATE TABLE pangram (sentence TEXT NOT NULL, result BOOLEAN);
+-- Task: update pangram table and set result based on sentence.

exercises/practice/pangram/pangram_test.sql

@@ -0,0 +1,40 @@
+-- Create database:
+.read ./create_fixture.sql
+
+-- Read user student solution and save any output as markdown in user_output.md:
+.mode markdown
+.output user_output.md
+.read ./pangram.sql
+.output
+
+-- Create a clean testing environment:
+.read ./create_test_table.sql
+
+-- Comparison of user input and the tests updates the status for each test:
+UPDATE tests
+SET status = 'pass'
+FROM (SELECT sentence, result FROM pangram) AS actual
+WHERE (actual.sentence, actual.result) = (tests.sentence, tests.expected);
+
+-- Update message for failed tests to give helpful information:
+UPDATE tests
+SET message = (
+    'Result for "'
+    || actual.sentence
+    || '"'
+    || ' is <' || COALESCE(actual.result, 'NULL')
+    || '> but should be <' || tests.expected || '>'
+)
+FROM (SELECT sentence, result FROM pangram) AS actual
+WHERE actual.sentence = tests.sentence AND tests.status = 'fail';
+
+-- Save results to ./output.json (needed by the online test-runner)
+.mode json
+.once './output.json'
+SELECT description, status, message, output, test_code, task_id
+FROM tests;
+
+-- Display test results in readable form for the student:
+.mode table
+SELECT description, status, message
+FROM tests;