fix csv format not support tuple

src/DataTypes/Serializations/SerializationTuple.cpp

@@ -7,6 +7,7 @@
 #include <Common/assert_cast.h>
 #include <IO/WriteHelpers.h>
 #include <IO/ReadHelpers.h>
+#include <IO/ReadBufferFromString.h>
 #include <IO/WriteBufferFromString.h>
 
 
@@ -526,36 +527,17 @@ void SerializationTuple::serializeTextXML(const IColumn & column, size_t row_num
 
 void SerializationTuple::serializeTextCSV(const IColumn & column, size_t row_num, WriteBuffer & ostr, const FormatSettings & settings) const
 {
-    for (size_t i = 0; i < elems.size(); ++i)
+    WriteBufferFromOwnString wb;
-    {
+    serializeText(column, row_num, wb, settings);
-        if (i != 0)
+    writeCSV(wb.str(), ostr);
-            writeChar(settings.csv.tuple_delimiter, ostr);
-        elems[i]->serializeTextCSV(extractElementColumn(column, i), row_num, ostr, settings);
-    }
 }
 
 void SerializationTuple::deserializeTextCSV(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const
 {
-    addElementSafe<void>(elems.size(), column, [&]
+    String s;
-    {
+    readCSV(s, istr, settings.csv);
-        const size_t size = elems.size();
+    ReadBufferFromString rb(s);
-        for (size_t i = 0; i < size; ++i)
+    deserializeText(column, rb, settings, true);
-        {
-            if (i != 0)
-            {
-                skipWhitespaceIfAny(istr);
-                assertChar(settings.csv.tuple_delimiter, istr);
-                skipWhitespaceIfAny(istr);
-            }
-
-            auto & element_column = extractElementColumn(column, i);
-            if (settings.null_as_default && !isColumnNullableOrLowCardinalityNullable(element_column))
-                SerializationNullable::deserializeNullAsDefaultOrNestedTextCSV(element_column, istr, settings, elems[i]);
-            else
-                elems[i]->deserializeTextCSV(element_column, istr, settings);
-        }
-        return true;
-    });
 }
 
 bool SerializationTuple::tryDeserializeTextCSV(IColumn & column, ReadBuffer & istr, const FormatSettings & settings) const

src/Formats/EscapingRuleUtils.cpp

@@ -303,8 +303,8 @@ DataTypePtr tryInferDataTypeByEscapingRule(const String & field, const FormatSet
                 /// Try to determine the type of value inside quotes
                 auto type = tryInferDataTypeForSingleField(data, format_settings);
 
-                /// If we couldn't infer any type or it's tuple in quotes or it's a number and csv.try_infer_numbers_from_strings = 0, we determine it as a string.
+                /// If we couldn't infer any type or it's a number and csv.try_infer_numbers_from_strings = 0, we determine it as a string.
-                if (!type || isTuple(type) || (isNumber(type) && !format_settings.csv.try_infer_numbers_from_strings))
+                if (!type || (isNumber(type) && !format_settings.csv.try_infer_numbers_from_strings))
                     return std::make_shared<DataTypeString>();
 
                 return type;

tests/queries/0_stateless/02977_csv_format_support_tuple.reference

@@ -0,0 +1,6 @@
+Nullable(String)
+Nullable(Int64)
+Array(Nullable(String))
+Map(String, Nullable(Int64))
+Tuple(Nullable(String), Nullable(Int64), Map(String, Nullable(Int64)))
+20240305	1	['s','d']	{'a':2}	('222',33,{'abc':5})

tests/queries/0_stateless/02977_csv_format_support_tuple.sql

@@ -0,0 +1,4 @@
+-- Tags: no-fasttest
+insert into function file('02977_1.csv') select '20240305', 1, ['s', 'd'], map('a', 2), tuple('222', 33, map('abc', 5));
+desc file('02977_1.csv');
+select * from file('02977_1.csv') settings max_threads=1;