From a2da98fb0f3f96c2a60693bf17ddc068c21688f3 Mon Sep 17 00:00:00 2001
From: cybershady <zjrundle@gmail.com>
Date: Sun, 25 Aug 2024 21:16:47 -0600
Subject: [PATCH] add initial files

---
 .DS_Store                                | Bin 0 -> 6148 bytes
 db/migration/000001_init_schema.down.sql |   0
 db/migration/000001_init_schema.up.sql   |   0
 db/simple bank.sql                       |  42 +++++++++++++++++++++++
 4 files changed, 42 insertions(+)
 create mode 100644 .DS_Store
 create mode 100644 db/migration/000001_init_schema.down.sql
 create mode 100644 db/migration/000001_init_schema.up.sql
 create mode 100644 db/simple bank.sql

diff --git a/.DS_Store b/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..9afc943ae08ad39a3d9ddaef64c4860bf2cc5508
GIT binary patch
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literal 0
HcmV?d00001

diff --git a/db/migration/000001_init_schema.down.sql b/db/migration/000001_init_schema.down.sql
new file mode 100644
index 0000000..e69de29
diff --git a/db/migration/000001_init_schema.up.sql b/db/migration/000001_init_schema.up.sql
new file mode 100644
index 0000000..e69de29
diff --git a/db/simple bank.sql b/db/simple bank.sql
new file mode 100644
index 0000000..d6522a7
--- /dev/null
+++ b/db/simple bank.sql	
@@ -0,0 +1,42 @@
+CREATE TABLE "accounts" (
+  "id" bigserial PRIMARY KEY,
+  "owner" varchar NOT NULL,
+  "balance" bigint NOT NULL,
+  "currency" varchar NOT NULL,
+  "created_at" timestamptz NOT NULL DEFAULT (now())
+);
+
+CREATE TABLE "entries" (
+  "id" bigserial PRIMARY KEY,
+  "account_id" bigint,
+  "amount" bigint NOT NULL,
+  "created_at" timestamptz NOT NULL DEFAULT (now())
+);
+
+CREATE TABLE "transfers" (
+  "id" bigserial PRIMARY KEY,
+  "from_account_id" bigint,
+  "to_account_id" bigint,
+  "amount" bigint NOT NULL,
+  "created_at" timestamptz NOT NULL DEFAULT (now())
+);
+
+CREATE INDEX ON "accounts" ("owner");
+
+CREATE INDEX ON "entries" ("account_id");
+
+CREATE INDEX ON "transfers" ("from_account_id");
+
+CREATE INDEX ON "transfers" ("to_account_id");
+
+CREATE INDEX ON "transfers" ("from_account_id", "to_account_id");
+
+COMMENT ON COLUMN "entries"."amount" IS 'can be negative or positive';
+
+COMMENT ON COLUMN "transfers"."amount" IS 'must be positive';
+
+ALTER TABLE "entries" ADD FOREIGN KEY ("account_id") REFERENCES "accounts" ("id");
+
+ALTER TABLE "transfers" ADD FOREIGN KEY ("from_account_id") REFERENCES "accounts" ("id");
+
+ALTER TABLE "transfers" ADD FOREIGN KEY ("to_account_id") REFERENCES "accounts" ("id");