Java में डेटा इम्पोर्ट करना
Anthony Markham
VP Quant Developer
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{ "customer": { "name": "John Doe", "address": { "street": "123 Main St", <- Nested information "city": "Boston", <- Nested information "coordinates": {"lat": 42.3601, "lng": -71.0589} <- Nested within nested information } } }
$ $
JsonReadOptions
JsonReadOptions options = JsonReadOptions .builder("complex.json") .tableName("Products") .missingValueIndicator("N/A") .build(); Table data = new JsonReader().read(options);
JsonReadOptions options = JsonReadOptions
.builder("complex.json")
.tableName("Products")
.missingValueIndicator("N/A")
.build();
Table data = new JsonReader().read(options);
missingValues = data.stringColumn("name").isMissing();
joinOn
Table phones = Table.read().csv("phones.csv"); // name, phone Table diets = Table.read().csv("diets.csv"); // name, diet // Perform the inner join on the two tables Table joined = phones.joinOn("name").inner(diets);
Table phones = Table.read().csv("phones.csv"); // name, phone
Table diets = Table.read().csv("diets.csv"); // name, diet
// Perform the inner join on the two tables Table joined = phones.joinOn("name").inner(diets);
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