[#46] MemberHistory: Add Type to PK

Elwig/Resources/Sql/20-21.sql

@@ -0,0 +1,16 @@
+-- schema version 20 to 21
+
+DROP TABLE member_history;
+CREATE TABLE member_history (
+    mgnr            INTEGER NOT NULL,
+    date            TEXT    NOT NULL CHECK (date REGEXP '^[1-9][0-9]{3}-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])$') DEFAULT CURRENT_DATE,
+    type            TEXT    NOT NULL CHECK (type REGEXP '^[a-z_]+$'),
+
+    business_shares INTEGER NOT NULL,
+    comment         TEXT DEFAULT NULL,
+
+    CONSTRAINT pk_member_history PRIMARY KEY (mgnr, date, type),
+    CONSTRAINT fk_member_history_member FOREIGN KEY (mgnr) REFERENCES member (mgnr)
+        ON UPDATE CASCADE
+        ON DELETE CASCADE
+) STRICT;