README.md

SchemaGuard

Merging YAML defined schema and data into PostgreSQL database

Create a file:

database:
  - schema:
    schemaName: test_schema
    owner: postgres
    tables:
      - table:
          tableName: test_table
          description: The new table
          constraint: -- some SQL as table constraint
          sql: -- some SQL suffix on table create
          columns:
            - column:
                name: id
                type: serial
                defaultValue:
                constraint:
                  primaryKey: true
                  nullable: false
                  foreignKey:
                    references: --fk_table
                    sql: -- some SQL suffix on new FK create, like- on delete no action on update no action
                description:
                sql: -- some SQL suffix on new column create
            - column:
                name: test
                type: varchar(250)
          triggers:
            - trigger:
                name: uniq_name_of_trigger
                event: before update
                when: for each row
                proc:

One line of code:

    let _ = schema_guard::migrate1(schema_guard::load_schema_from_file("file.yaml").unwrap(), &mut db)?;

Will create or upgrade existing Postgres database schema with desired tables without extra table creation.

Note

Not recommended to integrate schema migrate into application for production use as such violate security concern and best practices.

Please consider to use full-featured SchemaGuard (free for personal use)