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Add number of records and distinct values to the indexes listbox #5

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0617773
Merge branch 'develop'
dbeaubien Aug 29, 2023
099c794
Add record number and distinct values to index listbox
Jim-Kerver Jun 11, 2024
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19 changes: 13 additions & 6 deletions Project/Sources/Classes/form_Explorer.4dm
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Original file line number Diff line number Diff line change
Expand Up @@ -20,24 +20,31 @@ Function RefreshIndexedFieldInfo()


Function PerformIndexAnalysis()
var $field_detail : Object
var $indexUsageRatio : Real
var $field_detail; $fieldStatistics : Object
var $numberOfRecordsInTable : Integer
For each ($field_detail; This:C1470._form.filteredIndexedFieldList)
$numberOfRecordsInTable:=Records in table:C83(Table:C252($field_detail.tableNumber)->)
If ($numberOfRecordsInTable=0)
$field_detail.index_analysis_notes:="n/a - Table is empty"
Else
$indexUsageRatio:=Structure_GetFieldIndexRatio($field_detail.tableNumber; $field_detail.fieldNumber)*100
$fieldStatistics:={}
Structure_GetFieldIndexRatio($field_detail.tableNumber; $field_detail.fieldNumber; $fieldStatistics)
$fieldStatistics.indexUsageRatio:=$fieldStatistics.indexUsageRatio*100
If ($fieldStatistics.numberOfRecords>0)
$field_detail.numberOfRecords:=$fieldStatistics.numberOfRecords
End if
If ($fieldStatistics.distinctValues>0)
$field_detail.distinctValues:=$fieldStatistics.distinctValues
End if
Case of
: ($indexUsageRatio>=100)
: ($fieldStatistics.indexUsageRatio>=100)
$field_detail.index_analysis_notes:="ALL values are unique"

: ($indexUsageRatio<1)
: ($fieldStatistics.indexUsageRatio<1)
$field_detail.index_analysis_notes:="Less than 1% of the values are unique"

Else
$field_detail.index_analysis_notes:=String:C10($indexUsageRatio; "#0.000")+"% of the values are unique"
$field_detail.index_analysis_notes:=String:C10($fieldStatistics.indexUsageRatio; "#0.000")+"% of the values are unique"
End case
End if
End for each
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42 changes: 39 additions & 3 deletions Project/Sources/Forms/Explorer_d/form.4DForm
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Original file line number Diff line number Diff line change
Expand Up @@ -1448,7 +1448,7 @@
"dataSource": "Form:C1466.filteredIndexedFieldList",
"metaSource": "This:C1470.meta",
"selectionMode": "none",
"scrollbarHorizontal": "hidden",
"scrollbarHorizontal": "automatic",
"alternateFill": "#EEEEEE",
"events": [
"onClick",
Expand All @@ -1458,7 +1458,7 @@
{
"name": "name1",
"dataSource": "This:C1470.name",
"width": 320,
"width": 280,
"minWidth": 10,
"maxWidth": 32000,
"resizable": false,
Expand Down Expand Up @@ -1571,10 +1571,46 @@
"textAlign": "center",
"alternateFill": "automaticAlternate"
},
{
"header": {
"name": "Header30",
"text": "Records",
"textAlign": "left",
"fontWeight": "bold"
},
"name": "Column25",
"width": 100,
"dataSource": "This:C1470.numberOfRecords",
"dataSourceTypeHint": "number",
"textAlign": "left",
"numberFormat": "###,###,###,###,###,###,###",
"footer": {
"name": "Footer33"
},
"alternateFill": "automaticAlternate"
},
{
"header": {
"name": "Header31",
"text": "Distinct\\Values",
"textAlign": "left",
"fontWeight": "bold"
},
"name": "Column26",
"numberFormat": "###,###,###,###,###,###,###",
"dataSourceTypeHint": "number",
"textAlign": "left",
"width": 75,
"footer": {
"name": "Footer34"
},
"dataSource": "This:C1470.distinctValues",
"alternateFill": "automaticAlternate"
},
{
"name": "Column24",
"dataSource": "This:C1470.index_analysis_notes",
"width": 204,
"width": 200,
"minWidth": 10,
"maxWidth": 32000,
"stroke": "automatic",
Expand Down
7 changes: 5 additions & 2 deletions Project/Sources/Methods/Compiler_Methods.4dm
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Expand Up @@ -906,9 +906,9 @@ C_LONGINT:C283(Structure_GetFieldIndexType; $1)
C_LONGINT:C283(Structure_GetFieldIndexType; $2)

//Structure_GetFieldIndexRatio
C_REAL:C285(Structure_GetFieldIndexRatio; $0)
C_LONGINT:C283(Structure_GetFieldIndexRatio; $1)
C_LONGINT:C283(Structure_GetFieldIndexRatio; $2)
C_OBJECT:C1216(Structure_GetFieldIndexRatio; $3)

//Digest_GetForMethodText
C_TEXT:C284(Digest_GetForMethodText; $0)
Expand Down Expand Up @@ -1391,4 +1391,7 @@ C_BOOLEAN:C305(XML__XPathNewSyntax; $0)

//UTL_lowerCamelCase
C_TEXT:C284(UTL_lowerCamelCase; $0)
C_TEXT:C284(UTL_lowerCamelCase; $1)
C_TEXT:C284(UTL_lowerCamelCase; $1)

//Structure_GetFieldIndexRatio
C_OBJECT:C1216(Structure_GetFieldIndexRatio; $3)
34 changes: 16 additions & 18 deletions Project/Sources/Methods/Structure_GetFieldIndexRatio.4dm
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Original file line number Diff line number Diff line change
Expand Up @@ -6,66 +6,64 @@
// Returns the uniqueness ratio for the specified field.
// Value range between 1.00 (100% unique) to 0 (1 value for every record).
//
#DECLARE($tableNo : Integer; $fieldNo : Integer)->$indexUsageRatio : Real
#DECLARE($tableNo : Integer; $fieldNo : Integer; $fieldStatistics : Object)
// ----------------------------------------------------
ASSERT:C1129(Count parameters:C259=2)
$indexUsageRatio:=1 // Default to fully unique
ASSERT:C1129(Count parameters:C259=3)
$fieldStatistics.indexUsageRatio:=1 // Default to fully unique

OnErr_Install_Handler("OnErr_GENERIC")

If (Is table number valid:C999($tableNo))
If (Is field number valid:C1000($tableNo; $fieldNo))

C_LONGINT:C283($fieldtype; $fieldLength)
C_BOOLEAN:C305($indexed; $unique)
var $fieldtype; $fieldLength : Integer
var $indexed; $unique : Boolean
GET FIELD PROPERTIES:C258($tableNo; $fieldNo; $fieldtype; $fieldLength; $indexed; $unique)

If ($indexed)
C_LONGINT:C283($numberOfRecordsInTable; $numberOfRecordsHaveDistinctVals)
$numberOfRecordsInTable:=Records in table:C83(Table:C252($tableNo)->)
$fieldStatistics.numberOfRecords:=Records in table:C83(Table:C252($tableNo)->)
ALL RECORDS:C47(Table:C252($tableNo)->)

If ($numberOfRecordsInTable>0)
If ($fieldStatistics.numberOfRecords>0)
Case of
: ($unique)
$numberOfRecordsHaveDistinctVals:=$numberOfRecordsInTable
$fieldStatistics.distinctValues:=$fieldStatistics.numberOfRecords

: (($fieldtype=Is alpha field:K8:1) | ($fieldtype=Is text:K8:3))
ARRAY TEXT:C222($aText; 0)
DISTINCT VALUES:C339(Field:C253($tableNo; $fieldNo)->; $aText)
$numberOfRecordsHaveDistinctVals:=Size of array:C274($aText)
$fieldStatistics.distinctValues:=Size of array:C274($aText)
ARRAY TEXT:C222($aText; 0)

: (($fieldtype=Is integer:K8:5) | ($fieldtype=Is longint:K8:6) | ($fieldtype=Is time:K8:8))
ARRAY LONGINT:C221($aiLongInt; 0)
DISTINCT VALUES:C339(Field:C253($tableNo; $fieldNo)->; $aiLongInt)
$numberOfRecordsHaveDistinctVals:=Size of array:C274($aiLongInt)
$fieldStatistics.distinctValues:=Size of array:C274($aiLongInt)
ARRAY LONGINT:C221($aiLongInt; 0)

: (($fieldtype=Is real:K8:4) | ($fieldtype=_o_Is float:K8:26))
ARRAY REAL:C219($arReals; 0)
DISTINCT VALUES:C339(Field:C253($tableNo; $fieldNo)->; $arReals)
$numberOfRecordsHaveDistinctVals:=Size of array:C274($arReals)
$fieldStatistics.distinctValues:=Size of array:C274($arReals)
ARRAY REAL:C219($arReals; 0)

: (($fieldtype=Is date:K8:7))
ARRAY DATE:C224($addates; 0)
DISTINCT VALUES:C339(Field:C253($tableNo; $fieldNo)->; $addates)
$numberOfRecordsHaveDistinctVals:=Size of array:C274($addates)
$fieldStatistics.distinctValues:=Size of array:C274($addates)
ARRAY DATE:C224($addates; 0)

Else
$numberOfRecordsHaveDistinctVals:=$numberOfRecordsInTable
$fieldStatistics.distinctValues:=$fieldStatistics.numberOfRecords
End case
REDUCE SELECTION:C351(Table:C252($tableNo)->; 0)

$indexUsageRatio:=$numberOfRecordsHaveDistinctVals/$numberOfRecordsInTable
$fieldStatistics.indexUsageRatio:=$fieldStatistics.distinctValues/$fieldStatistics.numberOfRecords
$fieldStatistics.distinctValues:=$fieldStatistics.distinctValues
End if

Else
$indexUsageRatio:=-1 // no index
$fieldStatistics.indexUsageRatio:=-1
End if

End if
End if

Expand Down