================================================================================
Create an empty table
================================================================================
create table foo ();
--------------------------------------------------------------------------------

(source_file
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      (keyword_create)
      (keyword_table)
      (table_reference
        name: (identifier)
      )
      (column_definitions)
    )
  )
)

================================================================================
Create an empty table in specified schema
================================================================================
create table public.foo ();
--------------------------------------------------------------------------------

(source_file
  (statement
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      (keyword_create)
      (keyword_table)
      (table_reference
        schema: (identifier)
        name: (identifier)
      )
      (column_definitions)
    )
  )
)

================================================================================
Create an empty temporary table
================================================================================
create temporary table foo ();
create temp table foo ();
--------------------------------------------------------------------------------

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      )
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        name: (identifier)
      )
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    )
  )
)

================================================================================
Create an empty unlogged table
================================================================================
create unlogged table foo ();
--------------------------------------------------------------------------------

(source_file
  (statement
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      (keyword_table)
      (table_reference
        name: (identifier)
      )
      (column_definitions)
    )
  )
)

================================================================================
Create an empty table if not exists
================================================================================
create table if not exists foo ();
--------------------------------------------------------------------------------

(source_file
  (statement
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      (keyword_table)
      (keyword_if)
      (keyword_not)
      (keyword_exists)
      (table_reference
        name: (identifier)
      )
      (column_definitions)
    )
  )
)

================================================================================
Create a table with different columns
================================================================================
create table foo (
  c1  text,
  c2  boolean,
  c3  numeric(1),
  c4  timestamp with time zone,
  c5  varchar(120),
  c6  uuid
);
--------------------------------------------------------------------------------

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        name: (identifier)
      )
      (column_definitions
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          name: (identifier)
          (type (keyword_text))
        )
        (column_definition
          name: (identifier)
          (type (keyword_boolean))
        )
        (column_definition
          name: (identifier)
          (type (numeric
            (keyword_numeric)
            precision: (number)
          ))
        )
        (column_definition
          name: (identifier)
          (type (keyword_timestamptz))
        )
        (column_definition
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          (type (varchar
            (keyword_varchar)
            size: (number)
          ))
        )
        (column_definition
          name: (identifier)
          (type (keyword_uuid))
        )
      )
    )
  )
)

================================================================================
Create a table with column constraints
================================================================================
create table foo (
  id  uuid  primary key,
  c1  text  not null,
  c2  text  null,
  c3  text  not null default 'hello'
);
--------------------------------------------------------------------------------

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      )
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          )
          (column_constraint
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            (literal
              (literal_string)
            )
          )
        )
      )
    )
  )
)

================================================================================
Create a table with primary key and foreign key
================================================================================
create table foo (
  id      uuid  primary key,
  bar_id  uuid  null references bar (id) on update set null on delete cascade
);
--------------------------------------------------------------------------------

(source_file
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      )
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            )
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            )
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              (keyword_null)
            )
            (keyword_on)
            (keyword_delete)
            (referencial_action
              (keyword_cascade)
            )
          )
        )
      )
    )
  )
)

================================================================================
Create a table with named column constraints
================================================================================
create table foo (
  id  uuid  constraint foo_pkey primary key,
  c1  text  constraint strong_c1 not null,
  c2  text  constraint weak_c2 null,
  c3  text  constraint "c3 with power" not null constraint "c2 set default hello" default 'hello',
  c4  text  constraint "c4 unique" unique nulls not distinct
);
--------------------------------------------------------------------------------

(source_file
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      )
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          )
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            name: (identifier)
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            name: (identifier)
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              (literal_string)
            )
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        )
        (column_definition
          name: (identifier)
          (type (keyword_text))
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            (keyword_constraint)
            name: (identifier)
            (keyword_unique)
            (keyword_nulls)
            (keyword_not)
            (keyword_distinct)
          )
        )
      )
    )
  )
)

================================================================================
Create a table with table constraints
================================================================================
create table foo (
  id  uuid,
  primary key (id),
  c1  text  not null,
  c2  text  null,
  c3  text  not null default 'hello',
  unique (c1, c3)
);
--------------------------------------------------------------------------------

(source_file
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      )
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          (type (keyword_uuid))
        )
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            name: (identifier)
          )
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          (column_list
            name: (identifier)
            name: (identifier)
          )
        )
      )
    )
  )
)

================================================================================
Create a table with primary key and foreign key
================================================================================
create table foo (
  id      uuid  primary key,
  bar_id  uuid  null references bar (id) on update set null on delete cascade
);
--------------------------------------------------------------------------------

(source_file
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      )
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            )
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            (referencial_action
              (keyword_cascade)
            )
          )
        )
      )
    )
  )
)

================================================================================
Create a table with named column constraints
================================================================================
create table foo (
  id  uuid  constraint foo_pkey primary key,
  c1  text  constraint strong_c1 not null,
  c2  text  constraint weak_c2 null,
  c3  text  constraint "c3 with power" not null constraint "c2 set default hello" default 'hello',
  c4  text  constraint "c4 unique" unique nulls not distinct
);
--------------------------------------------------------------------------------

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          )
        )
      )
    )
  )
)

================================================================================
Create a table with named table constraints
================================================================================
create table foo (
  id  uuid,
  constraint foo_pkey primary key (id),
  c3  uuid  not null,
  constraint foo_c3_fkey foreign key (c3) references bar (id) on update set null on delete cascade,
  c4  text,
  constraint "c4 unique" unique nulls not distinct (c4)
);
--------------------------------------------------------------------------------

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          )
        )
      )
    )
  )
)