{
   "columns" : {
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         "COLLATION_NAME" : null,
         "COLUMN_DEFAULT" : "current_timestamp()",
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         "key_col" : "tzinfo_version/version"
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   "constraints" : {},
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         "SEQ_IN_INDEX" : 1,
         "SUB_PART" : null,
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         "NULLABLE" : "",
         "SEQ_IN_INDEX" : 1,
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         "NULLABLE" : "",
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         "SUB_PART" : null,
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      },
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         "NULLABLE" : "",
         "SEQ_IN_INDEX" : 1,
         "SUB_PART" : null,
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         "NULLABLE" : "",
         "SEQ_IN_INDEX" : 1,
         "SUB_PART" : null,
         "TABLE_NAME" : "tzinfo_version",
         "key_col" : "tzinfo_version/PRIMARY/1"
      }
   },
   "routines" : {},
   "tables" : {
      "date_range_helper" : {
         "CREATE_OPTIONS" : "",
         "ENGINE" : "InnoDB",
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         "TABLE_NAME" : "date_range_helper",
         "key_col" : "date_range_helper"
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         "TABLE_NAME" : "db_schema",
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         "TABLE_NAME" : "timezone",
         "key_col" : "timezone"
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         "TABLE_NAME" : "tzinfo_version",
         "key_col" : "tzinfo_version"
      }
   },
   "triggers" : {},
   "views" : {}
}