add sql

backend/sql/4-create_organization_post.sql

@@ -0,0 +1,21 @@
+-- Table: public.OrganizationPost
+
+-- DROP TABLE IF EXISTS public."OrganizationPost";
+
+CREATE TABLE IF NOT EXISTS public."OrganizationPost"
+(
+    id integer NOT NULL DEFAULT nextval('"OrganizationPost_id_seq"'::regclass),
+    organization_id integer NOT NULL,
+    content text COLLATE pg_catalog."default" NOT NULL,
+    CONSTRAINT "OrganizationPost_pkey" PRIMARY KEY (id),
+    CONSTRAINT "OrganizationIdFk" FOREIGN KEY (organization_id)
+        REFERENCES public."Organization" (id) MATCH SIMPLE
+        ON UPDATE CASCADE
+        ON DELETE CASCADE
+        NOT VALID
+)
+
+TABLESPACE pg_default;
+
+ALTER TABLE IF EXISTS public."OrganizationPost"
+    OWNER to postgres;