The handle of the app is 1.
1. List the tables and key fields.
The client sends:
{
"jsonrpc": "2.0",
"id": 1,
"method": "GetTablesAndKeys",
"handle": 1,
"params": [
{
"qcx": 1000,
"qcy": 1000
},
{
"qcx": 0,
"qcy": 0
},
30,
true,
false
]
}
The engine returns:
{
"jsonrpc": "2.0",
"id": 1,
"result": {
"qtr": [
{
"qName": "TempUnits",
"qNoOfRows": 2,
"qFields": [
{
"qName": "English/Metric",
"qOriginalFields": [],
"qPresent": true,
"qInformationDensity": 1,
"qnNonNulls": 2,
"qnRows": 2,
"qSubsetRatio": 1,
"qnTotalDistinctValues": 2,
"qnPresentDistinctValues": 2,
"qKeyType": "NOT_KEY",
"qTags": [
"$text"
],
"qDerivedFields": []
},
{
"qName": "TempUnit",
"qOriginalFields": [],
"qPresent": true,
"qInformationDensity": 1,
"qnNonNulls": 2,
"qnRows": 2,
"qSubsetRatio": 1,
"qnTotalDistinctValues": 2,
"qnPresentDistinctValues": 2,
"qKeyType": "NOT_KEY",
"qTags": [
"$ascii",
"$text"
],
"qDerivedFields": []
},
{
"qName": "PrecipUnit",
"qOriginalFields": [],
"qPresent": true,
"qInformationDensity": 1,
"qnNonNulls": 2,
"qnRows": 2,
"qSubsetRatio": 1,
"qnTotalDistinctValues": 2,
"qnPresentDistinctValues": 2,
"qKeyType": "NOT_KEY",
"qTags": [
"$ascii",
"$text"
],
"qDerivedFields": []
}
],
"qPos": {
"qx": 919,
"qy": 359
}
},
{
"qName": "GolfCourse Details",
"qNoOfRows": 47753,
"qFields": [
{
"qName": "GolfCourseKey",
"qOriginalFields": [],
"qPresent": true,
"qHasDuplicates": true,
"qInformationDensity": 1,
"qnNonNulls": 47753,
"qnRows": 47753,
"qSubsetRatio": 1,
"qnTotalDistinctValues": 17888,
"qnPresentDistinctValues": 17888,
"qKeyType": "ANY_KEY",
"qTags": [
"$key",
"$text"
],
"qDerivedFields": []
},
{
"qName": "Par",
"qOriginalFields": [],
"qPresent": true,
"qHasNull": true,
"qHasDuplicates": true,
"qInformationDensity": 0.99486943228697677,
"qnNonNulls": 47508,
"qnRows": 47753,
"qSubsetRatio": 1,
"qnTotalDistinctValues": 67,
"qnPresentDistinctValues": 67,
"qKeyType": "ANY_KEY",
"qTags": [
"$key",
"$numeric",
"$integer"
],
"qDerivedFields": []
},
{
"qName": "Slope",
"qOriginalFields": [],
"qPresent": true,
"qHasNull": true,
"qHasDuplicates": true,
"qInformationDensity": 0.9934244968902477,
"qnNonNulls": 47439,
"qnRows": 47753,
"qSubsetRatio": 1,
"qnTotalDistinctValues": 122,
"qnPresentDistinctValues": 122,
"qKeyType": "ANY_KEY",
"qTags": [
"$key",
"$numeric",
"$integer"
],
"qDerivedFields": []
},
{
"qName": "Rating",
"qOriginalFields": [],
"qPresent": true,
"qHasNull": true,
"qHasDuplicates": true,
"qInformationDensity": 0.9934244968902477,
"qnNonNulls": 47439,
"qnRows": 47753,
"qSubsetRatio": 1,
"qnTotalDistinctValues": 420,
"qnPresentDistinctValues": 420,
"qKeyType": "ANY_KEY",
"qTags": [
"$key"
],
"qDerivedFields": []
}
],
"qPos": {
"qx": 147,
"qy": 497
}
}
],
"qk": [
{
"qKeyFields": [
"GolfCourseKey"
],
"qTables": [
"GolfCourse",
"GolfCourse Details",
"GolfCourseMeasurements"
]
},
{
"qKeyFields": [
"Par"
],
"qTables": [
"GolfCourse Details",
"AvgParRangeMatch"
]
},
{
"qKeyFields": [
"Rating"
],
"qTables": [
"GolfCourse Details",
"AvgRaitingRangeMatch"
]
},
{
"qKeyFields": [
"Slope"
],
"qTables": [
"GolfCourse Details",
"AvgSlopeRangeMatch"
]
},
{
"qKeyFields": [
"AirportCode"
],
"qTables": [
"GolfCourse",
"MonthlyWeather"
]
},
{
"qKeyFields": [
"Avg_Green_Fee"
],
"qTables": [
"GolfCourseMeasurements",
"AvgGreenFeeRangeMatch"
]
},
{
"qKeyFields": [
"Avg_Temp_F"
],
"qTables": [
"MonthlyWeather",
"AvgTempRangeMatch_F"
]
},
{
"qKeyFields": [
"Avg_Temp_C"
],
"qTables": [
"MonthlyWeather",
"AvgTempRangeMatch_C"
]
}
]
}
}
The list of tables, fields and keys is returned. The list of derived fields is empty.
