Merge pull request #41 from dekart-xyz/add-files

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migrations/000009_create_files_table.up.sql

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+CREATE TABLE IF NOT EXISTS files (
+  id uuid NOT NULL,
+  file_source_id uuid,
+  name varchar DEFAULT '',
+  size bigint DEFAULT 0,
+  mime_type varchar DEFAULT '',
+  file_status int DEFAULT 1,
+  upload_error text DEFAULT '',
+  updated_at timestamptz DEFAULT CURRENT_TIMESTAMP,
+  created_at timestamptz DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY(id)
+);
+
+CREATE INDEX IF NOT EXISTS files_file_source_id_idx ON files (file_source_id);

migrations/000010_queries_alter_report_id.up.sql

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+ALTER TABLE queries
+  ALTER COLUMN report_id drop not null;

migrations/000011_create_dataset_table.up.sql

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+CREATE TABLE IF NOT EXISTS datasets (
+  report_id uuid NOT NULL,
+  id uuid NOT NULL,
+  query_id uuid,
+  file_id uuid,
+  updated_at timestamptz DEFAULT CURRENT_TIMESTAMP,
+  created_at timestamptz DEFAULT CURRENT_TIMESTAMP,
+  PRIMARY KEY(id),
+  CONSTRAINT fk_report FOREIGN KEY(report_id) REFERENCES reports,
+  CONSTRAINT fk_file FOREIGN KEY(file_id) REFERENCES files,
+  CONSTRAINT fk_query FOREIGN KEY(query_id) REFERENCES queries
+);