1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
|
#include <iostream>
#include <GPUdb.hpp>
const std::string COL_1 = "col1";
const std::string COL_2 = "col2";
const std::string COL_GROUP_ID = "group_id";
const std::string STR_GROUP_1_CONST = "Group 1";
const std::string STR_GROUP_2_CONST = "Group 2";
const std::string my_table("my_table_1");
// helper functions prototypes
void print_GetRecordsResponse(const gpudb::GetRecordsResponse<gpudb::GenericRecord>&);
void insertRecordsLocal(gpudb::GPUdb& h_db, gpudb::Type myTypeSchema, int start, int end, double col1_const, std::string col2_const, std::string group_id_const, bool display_record_ids = false);
int main(int argc, char *argv[])
{
std::map<std::string, std::string> options;
gpudb::GPUdb h_db("https://abcdefg.cloud.kinetica.com/hijklmn/gpudb-0;CombinePrepareAndExecute=1;RowsPerFetch=20000");
std::vector<gpudb::Type::Column> columns;
columns.push_back(gpudb::Type::Column(COL_1, gpudb::Type::Column::ColumnType::DOUBLE));
columns.push_back(gpudb::Type::Column(COL_2, gpudb::Type::Column::ColumnType::STRING));
columns.push_back(gpudb::Type::Column(COL_GROUP_ID, gpudb::Type::Column::ColumnType::STRING));
gpudb::Type myType("my_type_1", columns);
std::string type_id_1 = myType.create(h_db);
std::cout << "GPUdb generated type id for the new type - " << type_id_1 << std::endl;
try
{
gpudb::CreateTableResponse response = h_db.createTable(my_table, type_id_1, options);
}
catch (const std::exception& ex)
{
std::cout << "Caught Exception: " << ex.what() << std::endl;
return 10;
}
try
{
// Insert some records into the table
insertRecordsLocal(h_db, myType, 1, 10, 0.1, "string ", STR_GROUP_1_CONST, true);
// Call the helper function to Retrieve records from the table
gpudb::GetRecordsResponse<gpudb::GenericRecord> response = h_db.getRecords<gpudb::GenericRecord>(myType, my_table, 0, 100, options);
print_GetRecordsResponse(response);
// Filter the records by an expression into a view
std::string my_view("my_view_1");
std::string my_filterExpr("col1=1.1");
gpudb::FilterResponse filter_resp = h_db.filter(my_table, my_view, my_filterExpr, options);
std::cout << "Number of records returned by filter expression: " << filter_resp.count << std::endl;
// Retrieve records from the view
response = h_db.getRecords<gpudb::GenericRecord>(myType, my_view, 0, 100, options);
print_GetRecordsResponse(response);
// Drop the view (same function as dropping a table)
gpudb::ClearTableResponse clrTbl_Resp = h_db.clearTable(my_view, "", options);
// Apply a filter condition with two columns
my_filterExpr = "col1 <= 9 and group_id=\"Group 1\"";
filter_resp = h_db.filter(my_table, my_view, my_filterExpr, options);
std::cout << "Number of records returned by second filter expression: " << filter_resp.count << std::endl;
response = h_db.getRecords<gpudb::GenericRecord>(myType, my_view, 0, 100, options);
print_GetRecordsResponse(response);
// Filter by a list of values. Note also query chaining - query run on another view.
std::string my_view2("my_view_2");
std::map<std::string, std::vector<std::string> > my_filterList;
my_filterList["col1"].push_back("1.1");
my_filterList["col1"].push_back("2.1");
my_filterList["col1"].push_back("5.1");
gpudb::FilterByListResponse filterByList_resp = h_db.filterByList(my_view, my_view2, my_filterList, options);
std::cout << "Number of records returned by filter by list expression " << filterByList_resp.count << std::endl;
response = h_db.getRecords<gpudb::GenericRecord>(myType, my_view2, 0, 100, options);
print_GetRecordsResponse(response);
// Filter by a range
std::string my_view3("my_view_3");
gpudb::FilterByRangeResponse filterByRange_resp = h_db.filterByRange(my_view, my_view3, COL_1, 1, 5, options);
std::cout << "Number of records returned by filter by range expression " << filterByRange_resp.count << std::endl;
response = h_db.getRecords<gpudb::GenericRecord>(myType, my_view3, 0, 100, options);
print_GetRecordsResponse(response);
// Insert New Records
insertRecordsLocal(h_db, myType, 1, 8, 10.1, "string ", STR_GROUP_2_CONST);
// Retrieve unique values for a column
gpudb::AggregateUniqueResponse aggrUniq_resp = h_db.aggregateUnique(my_table, COL_GROUP_ID, 0, 100, options);
std::cout << "Unique values in group_id column " << aggrUniq_resp.data.size() << std::endl;
std::cout << "Schema " << aggrUniq_resp.responseSchemaStr << std::endl;
for (size_t i = 0; i < aggrUniq_resp.data.size(); ++i)
{
const gpudb::DynamicTableRecord& record = aggrUniq_resp.data[i];
// already know the returned column and its type ; just print it.
assert(record.getFieldCount() == 1);
std::cout << '"' << record.value<std::string>(0) << "\", ";
}
// "Group by" query
std::cout << "Calling aggregateGroupBy on a single column. ";
std::vector<std::string> col_names;
col_names.push_back(COL_2);
gpudb::AggregateGroupByResponse aggrGB_resp = h_db.aggregateGroupBy(my_table, col_names, 0, 100, options);
std::cout << "Number of unique values in col2 " << aggrGB_resp.data.size() << std::endl;
std::cout << "Schema " << aggrGB_resp.responseSchemaStr << std::endl;
for (size_t i = 0; i < aggrGB_resp.data.size(); ++i)
{
const gpudb::DynamicTableRecord& record = aggrGB_resp.data[i];
assert(record.getFieldCount() == 2);
std::cout << '"' << record.value<std::string>(0) << '"';
std::cout << ':' << record.getAsDouble(1) << std::endl;
}
std::cout << "Calling aggregateGroupBy to retrieve stats on a column. ";
col_names.clear();
col_names.push_back(COL_GROUP_ID);
col_names.push_back("count(*)");
col_names.push_back("sum(col1)");
col_names.push_back("avg(col1)");
aggrGB_resp = h_db.aggregateGroupBy(my_table, col_names, 0, 100, options);
std::cout << "Number of unique values in group_id column " << aggrGB_resp.data.size() << std::endl;
// std::cout << "Schema " << aggrGB_resp.responseSchemaStr << std::endl;
// Parse the group by response.
const gpudb::GenericRecord& rec1 = aggrGB_resp.data[0];
for (size_t j = 0; j < rec1.getType().getColumnCount(); j++)
{
std::cout << rec1.getType().getColumn(j).getName() << '\t';
}
std::cout << std::endl;
// print the values from the response
for (size_t i = 0; i < aggrGB_resp.data.size(); ++i)
{
const gpudb::DynamicTableRecord& record = aggrGB_resp.data[i];
assert(record.getFieldCount() == col_names.size());
for (size_t j = 0; j < record.getType().getColumnCount(); j++)
{
switch (record.getType().getColumn(j).getType())
{
case gpudb::Type::Column::STRING:
std::cout << '"' << record.value<std::string>(j) << "\"\t";
break;
case gpudb::Type::Column::DOUBLE:
std::cout << record.getAsDouble(j) << '\t';
break;
case gpudb::Type::Column::FLOAT:
std::cout << record.getAsFloat(j) << '\t';
break;
case gpudb::Type::Column::INT:
std::cout << record.getAsInt(j) << '\t';
break;
case gpudb::Type::Column::LONG:
std::cout << record.getAsLong(j) << '\t';
break;
default:
std::cout << "!Unhandled Type!" << '\t';
}
}
std::cout << std::endl;
}
// expressions in group by
std::cout << "Calling aggregateGroupBy for an expression. ";
col_names.clear();
col_names.push_back(COL_GROUP_ID);
col_names.push_back("sum(col1*10)");
aggrGB_resp = h_db.aggregateGroupBy(my_table, col_names, 0, 100, options);
std::cout << "Unique values in group_id column " << aggrGB_resp.data.size() << std::endl;
std::cout << "Schema " << aggrGB_resp.responseSchemaStr << std::endl;
const gpudb::DynamicTableRecord& rec2 = aggrGB_resp.data[0];
for (size_t j = 0; j < rec2.getType().getColumnCount(); j++)
{
std::cout << rec2.getType().getColumn(j).getName() << '\t';
}
std::cout << std::endl;
for (size_t i = 0; i < aggrGB_resp.data.size(); ++i)
{
const gpudb::DynamicTableRecord& record = aggrGB_resp.data[i];
assert(record.getFieldCount() == col_names.size());
for (size_t j = 0; j < record.getType().getColumnCount(); j++)
{
switch (record.getType().getColumn(j).getType())
{
case gpudb::Type::Column::STRING:
std::cout << '"' << record.value<std::string>(j) << "\"\t";
break;
case gpudb::Type::Column::DOUBLE:
std::cout << record.getAsDouble(j) << '\t';
break;
case gpudb::Type::Column::FLOAT:
std::cout << record.getAsFloat(j) << '\t';
break;
case gpudb::Type::Column::INT:
std::cout << record.getAsInt(j) << '\t';
break;
case gpudb::Type::Column::LONG:
std::cout << record.getAsLong(j) << '\t';
break;
default:
std::cout << "!Unhandled Type!" << '\t';
}
}
std::cout << std::endl;
}
// Insert few more records
insertRecordsLocal(h_db, myType, 4, 10, 0.6, "string 2", STR_GROUP_1_CONST);
// Aggregate Histogram
std::cout << "Calling aggregateHistogram. ";
double range_start = 0.0;
double range_end = 11;
double interval = 1;
gpudb::AggregateHistogramResponse aggrHist_resp = h_db.aggregateHistogram(my_table, COL_1, range_start, range_end, interval, options);
std::cout << "Num Histogram bins: " << aggrHist_resp.counts.size()
<< " Start: " << aggrHist_resp.start
<< " end: " << aggrHist_resp.end << std::endl;
std::cout << "Count per bin - ";
std::copy(aggrHist_resp.counts.begin(), aggrHist_resp.counts.end(), std::ostream_iterator<int>(std::cout, ", "));
std::cout << std::endl;
}
catch (const std::exception& ex)
{
std::cout << "Caught Exception: " << ex.what() << std::endl;
return 1;
}
return 0;
}
// Helper functions
// Insert new records to the table
void insertRecordsLocal(gpudb::GPUdb& h_db, gpudb::Type myTypeSchema, int start, int end, double col1_const, std::string col2_const, std::string group_id_const, bool display_record_ids)
{
std::map<std::string, std::string> options;
std::vector<gpudb::GenericRecord> record_list;
for (int i = start; i < end; i++)
{
gpudb::GenericRecord datum(myTypeSchema);
datum.setAsDouble(COL_1,i + col1_const);
std::ostringstream ostr;
ostr << col2_const << i;
datum.setAsString(COL_2,ostr.str());
datum.setAsString(COL_GROUP_ID,group_id_const);
record_list.push_back(datum);
}
options["return_record_ids"] = "true"; // optionally request record_ids
gpudb::InsertRecordsResponse response = h_db.insertRecords(my_table, record_list, options);
options.clear();
if (display_record_ids)
{
std::cout << "Record Ids for " << response.countInserted << " new records - [";
std::copy(response.recordIds.begin(), response.recordIds.end() - 1, std::ostream_iterator<std::string>(std::cout, "', '"));
std::cout << "'" << *(response.recordIds.end() - 1) << "']" << std::endl;
}
else
{
std::cout << response.countInserted << " new records inserted." << std::endl;
}
}
// Print the records from the table
void print_GetRecordsResponse(const gpudb::GetRecordsResponse<gpudb::GenericRecord>& response)
{
// std::cout << "response schema - " << response.typeSchema << std::endl;
for (unsigned int i = 0; i < response.data.size(); ++i)
{
const gpudb::GenericRecord& record = response.data[i];
std::cout << "\"" << COL_1 << "\":" << record.getAsDouble(COL_1)
<< ", \"" << COL_2 << "\":\"" << record.getAsString(COL_2) << std::flush
<< "\", \"" << COL_GROUP_ID << "\":\"" << record.getAsString(COL_GROUP_ID) << "\"\n";
}
}
|
