多维表格
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'use strict';
exports.findOrInsertObjectArrayByKey = (obj, key, array) => {
let found = 0;
let i = 0;
for (i = 0; i < array.length; ++i) {
if (key in array[i]) {
if (obj[key] === array[i][key]) {
found = 1;
break;
}
}
}
if (!found) {
array.push(obj)
}
return array[i];
};
exports.findObjectInArrayByKey = (key, value, objArray) => {
for (let i = 0; i < objArray.length; ++i) {
if (objArray[i][key] === value) {
return objArray[i];
}
}
return null;
};
exports.round = function (number, precision) {
var factor = Math.pow(10, precision);
var tempNumber = number * factor;
var roundedTempNumber = Math.round(tempNumber);
return roundedTempNumber / factor;
};
exports.numberRound = (number, precision) => {
var factor = Math.pow(10, precision);
var tempNumber = number * factor;
var roundedTempNumber = Math.round(tempNumber);
return roundedTempNumber / factor;
}
exports.numberGetLength = (number) => {
var n = number;
if (number < 0) {
n = n * -1;
}
return n.toString().length;
}
exports.numberGetFixed = (number) => {
//console.log(number, typeof number);
return parseInt(number.toFixed())
}
exports.getStepArraySimple = function (min, max, step) {
var arr = []
for (var i = min; i <= max; i = i + step) {
arr.push(i)
}
return arr;
};
exports.getStepArray = (min, max, stddev) => {
// console.log(' = = = = = = = ');
//console.log('original numbers', min, max, stddev);
min = this.numberGetFixed(min)
max = this.numberGetFixed(max)
stddev = this.numberGetFixed(stddev)
// console.log('fixed numbers', min, max, stddev);
let minMinusHalf = min - stddev / 2
let maxMinusHalf = max + stddev / 2
minMinusHalf = this.numberGetFixed(minMinusHalf)
maxMinusHalf = this.numberGetFixed(maxMinusHalf)
// console.log('fixed numbers + (min,max)', min, max, stddev, '(', minMinusHalf, ',', maxMinusHalf, ')');
// console.log('numbers length', 'min', numberGetLength(min), 'max', numberGetLength(max), 'stddev', numberGetLength(stddev));
let minLen = this.numberGetLength(minMinusHalf)
let maxLen = this.numberGetLength(maxMinusHalf)
let stddevLen = this.numberGetLength(stddev)
//
// console.log('- - - -');
// console.log('Range', 'min', numberRound(minMinusHalf, -1));
// console.log('Range', 'max', numberRound(maxMinusHalf, -1));
// console.log('Range', 'stddev', numberRound(stddev, -1));
if (minLen > 1)
minMinusHalf = this.numberRound(minMinusHalf, -1)
if (maxLen > 2)
maxMinusHalf = this.numberRound(maxMinusHalf, -1)
if (stddevLen !== 1)
stddev = this.numberRound(stddev, -1)
var arr = []
for (var step = minMinusHalf; step < maxMinusHalf; step = step + stddev) {
arr.push(step)
}
arr.push(maxMinusHalf)
// console.log(arr);
return arr;
}
exports.getSchemaQuery = function () {
return 'select c.table_name, c.column_name, c.ordinal_position,c.column_key,c.is_nullable, c.data_type, c.column_type,c.extra,c.privileges, ' +
'c.column_comment,c.column_default,c.data_type,c.character_maximum_length, ' +
'k.constraint_name, k.referenced_table_name, k.referenced_column_name, ' +
's.index_name,s.seq_in_index, ' +
'v.table_name as isView ' +
'from ' +
'information_schema.columns as c ' +
'left join ' +
'information_schema.key_column_usage as k ' +
'on ' +
'c.column_name=k.column_name and ' +
'c.table_schema = k.referenced_table_schema and ' +
'c.table_name = k.table_name ' +
'left join ' +
'information_schema.statistics as s ' +
'on ' +
'c.column_name = s.column_name and ' +
'c.table_schema = s.index_schema and ' +
'c.table_name = s.table_name ' +
'LEFT JOIN ' +
'information_schema.VIEWS as v ' +
'ON ' +
'c.table_schema = v.table_schema and ' +
'c.table_name = v.table_name ' +
'where ' +
'c.table_schema=? ' +
'order by ' +
'c.table_name, c.ordinal_position';
};
exports.getChartQuery = function () {
return 'select ? as ??, count(*) as _count from ?? where ?? between ? and ? '
}