tweak fixtures to add more columns and add some initial for postgres/mysql

tests/fixtures/mysql.sql

@@ -0,0 +1,7 @@
+CREATE TABLE accounts (
+    id              INTEGER PRIMARY KEY AUTOINCREMENT,
+    created_at      TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+    name            VARCHAR(255) NOT NULL,
+    is_active       BOOLEAN,
+    score           DOUBLE
+);

tests/fixtures/postgres.sql

@@ -0,0 +1,14 @@
+CREATE TABLE accounts (
+    id              BIGSERIAL PRIMARY KEY,
+    created_at      TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    name            TEXT NOT NULL,
+    is_active       BOOLEAN,
+    score           DOUBLE PRECISION
+);
+
+-- https://www.postgresql.org/docs/current/rowtypes.html#ROWTYPES-DECLARING
+CREATE TYPE inventory_item AS (
+    name            TEXT,
+    supplier_id     INT,
+    price           BIGINT
+);