table_create types TABLE_PAT_KEY ShortText

table_create memos TABLE_HASH_KEY ShortText
column_create memos type COLUMN_SCALAR types

load --table memos
[
{"_key": "a", "type": "10"},
{"_key": "b", "type": "20"},
{"_key": "c", "type": "30"}
]

select memos \
  --filter 'type >= "20"'
