migrations: add version tables for all data sources

migrations/0001_JMDict.sql

@@ -1,3 +1,16 @@
+CREATE TABLE "JMdict_Version" (
+  "version" VARCHAR(10) PRIMARY KEY NOT NULL,
+  "date" DATE NOT NULL,
+  "hash" VARCHAR(64) NOT NULL
+) WITHOUT ROWID;
+
+CREATE TRIGGER "JMdict_Version_SingleRow"
+BEFORE INSERT ON "JMdict_Version"
+WHEN (SELECT COUNT(*) FROM "JMdict_Version") >= 1
+BEGIN
+    SELECT RAISE(FAIL, 'Only one row allowed in JMdict_Version');
+END;
+
 CREATE TABLE "JMdict_InfoDialect" (
   "id" VARCHAR(4) PRIMARY KEY NOT NULL,
   "description" TEXT NOT NULL

migrations/0004_JMDict_tanos_jlpt_tags.sql

@@ -1,3 +1,16 @@
+CREATE TABLE "JMdict_JLPT_Version" (
+  "version" VARCHAR(10) PRIMARY KEY NOT NULL,
+  "date" DATE NOT NULL,
+  "hash" VARCHAR(64) NOT NULL
+) WITHOUT ROWID;
+
+CREATE TRIGGER "JMdict_JLPT_Version_SingleRow"
+BEFORE INSERT ON "JMdict_JLPT_Version"
+WHEN (SELECT COUNT(*) FROM "JMdict_JLPT_Version") >= 1
+BEGIN
+    SELECT RAISE(FAIL, 'Only one row allowed in JMdict_JLPT_Version');
+END;
+
 CREATE TABLE "JMdict_JLPTTag" (
   "entryId" INTEGER NOT NULL,
   "jlptLevel" CHAR(2) NOT NULL CHECK ("jlptLevel" in ('N5', 'N4', 'N3', 'N2', 'N1')),

migrations/0006_RADKFILE.sql

@@ -1,3 +1,16 @@
+CREATE TABLE "RADKFILE_Version" (
+  "version" VARCHAR(10) PRIMARY KEY NOT NULL,
+  "date" DATE NOT NULL,
+  "hash" VARCHAR(64) NOT NULL
+) WITHOUT ROWID;
+
+CREATE TRIGGER "RADKFILE_Version_SingleRow"
+BEFORE INSERT ON "RADKFILE_Version"
+WHEN (SELECT COUNT(*) FROM "RADKFILE_Version") >= 1
+BEGIN
+    SELECT RAISE(FAIL, 'Only one row allowed in RADKFILE_Version');
+END;
+
 CREATE TABLE "RADKFILE" (
   "kanji" CHAR(1) NOT NULL,
   "radical" CHAR(1) NOT NULL,

migrations/0007_KANJIDIC2.sql

@@ -1,3 +1,16 @@
+CREATE TABLE "KANJIDIC_Version" (
+  "version" VARCHAR(10) PRIMARY KEY NOT NULL,
+  "date" DATE NOT NULL,
+  "hash" VARCHAR(64) NOT NULL
+) WITHOUT ROWID;
+
+CREATE TRIGGER "KANJIDIC_Version_SingleRow"
+BEFORE INSERT ON "KANJIDIC_Version"
+WHEN (SELECT COUNT(*) FROM "KANJIDIC_Version") >= 1
+BEGIN
+    SELECT RAISE(FAIL, 'Only one row allowed in KANJIDIC_Version');
+END;
+
 CREATE TABLE "KANJIDIC_Character" (
   "literal" CHAR(1) NOT NULL PRIMARY KEY,
   "grade" INTEGER CHECK ("grade" BETWEEN 1 AND 10),