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* Denormalized post versions. Testing has shown it reduces the size

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of the table 66%.
This commit is contained in:
albert
2010-11-04 18:17:03 -04:00
parent d0d3487fc8
commit 551c25909c
9 changed files with 157 additions and 114 deletions
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109
db/development_structure.sql
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@@ -1013,6 +1013,38 @@ CREATE SEQUENCE pools_id_seq
ALTER SEQUENCE pools_id_seq OWNED BY pools.id;
--
-- Name: post_histories; Type: TABLE; Schema: public; Owner: -; Tablespace:
--
CREATE TABLE post_histories (
id integer NOT NULL,
created_at timestamp without time zone,
updated_at timestamp without time zone,
post_id integer NOT NULL,
revisions text NOT NULL
);
--
-- Name: post_histories_id_seq; Type: SEQUENCE; Schema: public; Owner: -
--
CREATE SEQUENCE post_histories_id_seq
START WITH 1
INCREMENT BY 1
NO MAXVALUE
NO MINVALUE
CACHE 1;
--
-- Name: post_histories_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
--
ALTER SEQUENCE post_histories_id_seq OWNED BY post_histories.id;
--
-- Name: post_moderation_details; Type: TABLE; Schema: public; Owner: -; Tablespace:
--
@@ -1045,42 +1077,6 @@ CREATE SEQUENCE post_moderation_details_id_seq
ALTER SEQUENCE post_moderation_details_id_seq OWNED BY post_moderation_details.id;
--
-- Name: post_versions; Type: TABLE; Schema: public; Owner: -; Tablespace:
--
CREATE TABLE post_versions (
id integer NOT NULL,
created_at timestamp without time zone,
updated_at timestamp without time zone,
post_id integer NOT NULL,
source character varying(255),
rating character(1) DEFAULT 'q'::bpchar NOT NULL,
tag_string text NOT NULL,
updater_id integer NOT NULL,
updater_ip_addr inet NOT NULL
);
--
-- Name: post_versions_id_seq; Type: SEQUENCE; Schema: public; Owner: -
--
CREATE SEQUENCE post_versions_id_seq
START WITH 1
INCREMENT BY 1
NO MAXVALUE
NO MINVALUE
CACHE 1;
--
-- Name: post_versions_id_seq; Type: SEQUENCE OWNED BY; Schema: public; Owner: -
--
ALTER SEQUENCE post_versions_id_seq OWNED BY post_versions.id;
--
-- Name: post_votes; Type: TABLE; Schema: public; Owner: -; Tablespace:
--
@@ -1812,14 +1808,14 @@ ALTER TABLE pools ALTER COLUMN id SET DEFAULT nextval('pools_id_seq'::regclass);
-- Name: id; Type: DEFAULT; Schema: public; Owner: -
--
ALTER TABLE post_moderation_details ALTER COLUMN id SET DEFAULT nextval('post_moderation_details_id_seq'::regclass);
ALTER TABLE post_histories ALTER COLUMN id SET DEFAULT nextval('post_histories_id_seq'::regclass);
--
-- Name: id; Type: DEFAULT; Schema: public; Owner: -
--
ALTER TABLE post_versions ALTER COLUMN id SET DEFAULT nextval('post_versions_id_seq'::regclass);
ALTER TABLE post_moderation_details ALTER COLUMN id SET DEFAULT nextval('post_moderation_details_id_seq'::regclass);
--
@@ -2137,6 +2133,14 @@ ALTER TABLE ONLY pools
ADD CONSTRAINT pools_pkey PRIMARY KEY (id);
--
-- Name: post_histories_pkey; Type: CONSTRAINT; Schema: public; Owner: -; Tablespace:
--
ALTER TABLE ONLY post_histories
ADD CONSTRAINT post_histories_pkey PRIMARY KEY (id);
--
-- Name: post_moderation_details_pkey; Type: CONSTRAINT; Schema: public; Owner: -; Tablespace:
--
@@ -2145,14 +2149,6 @@ ALTER TABLE ONLY post_moderation_details
ADD CONSTRAINT post_moderation_details_pkey PRIMARY KEY (id);
--
-- Name: post_versions_pkey; Type: CONSTRAINT; Schema: public; Owner: -; Tablespace:
--
ALTER TABLE ONLY post_versions
ADD CONSTRAINT post_versions_pkey PRIMARY KEY (id);
--
-- Name: post_votes_pkey; Type: CONSTRAINT; Schema: public; Owner: -; Tablespace:
--
@@ -2712,6 +2708,13 @@ CREATE INDEX index_pools_on_creator_id ON pools USING btree (creator_id);
CREATE INDEX index_pools_on_name ON pools USING btree (name);
--
-- Name: index_post_histories_on_post_id; Type: INDEX; Schema: public; Owner: -; Tablespace:
--
CREATE INDEX index_post_histories_on_post_id ON post_histories USING btree (post_id);
--
-- Name: index_post_moderation_details_on_post_id; Type: INDEX; Schema: public; Owner: -; Tablespace:
--
@@ -2726,20 +2729,6 @@ CREATE INDEX index_post_moderation_details_on_post_id ON post_moderation_details
CREATE INDEX index_post_moderation_details_on_user_id ON post_moderation_details USING btree (user_id);
--
-- Name: index_post_versions_on_post_id; Type: INDEX; Schema: public; Owner: -; Tablespace:
--
CREATE INDEX index_post_versions_on_post_id ON post_versions USING btree (post_id);
--
-- Name: index_post_versions_on_updater_id; Type: INDEX; Schema: public; Owner: -; Tablespace:
--
CREATE INDEX index_post_versions_on_updater_id ON post_versions USING btree (updater_id);
--
-- Name: index_posts_on_created_at; Type: INDEX; Schema: public; Owner: -; Tablespace:
--