db-conn-pgsql/dist/PgSqlUtils.js

Database Connecton Postgres SQL

import { SQLType } from "db-conn";
export function toAnsiTypeColumns(metadata) {
    const rt = [];
    for (let mField of metadata) {
        const field = {};
        field.name = mField.name;
        field.type = toAnsiType(mField.dataTypeID);
        rt.push(field);
    }
    return rt;
}
export function toAnsiType(dataTypeID) {
    switch (dataTypeID) {
        case 23:
            return SQLType.i32;
        case 1043:
            return SQLType.varchar;
        case 1700:
            return SQLType.decimal;
        case 701:
            return SQLType.f64;
        case 1114:
            return SQLType.datetime;
        case 1082:
            return SQLType.date;
        case 1083:
            return SQLType.time;
        case 25:
            return SQLType.text;
        case 17:
            return SQLType.blob;
    }
    return "unknown";
}
export function toAnsiValueRows(rows, metadata) {
    const rt = [];
    for (let row of rows) {
        const newRow = {};
        for (let field of metadata) {
            const value = row[field.name];
            newRow[field.name] = toAnsiValue(value, field.type);
        }
        rt.push(newRow);
    }
    return rt;
}
export function toAnsiValue(value, type) {
    if (value === undefined || value === null) {
        return value;
    }
    let rt = null;
    let offset = null;
    switch (type) {
        case SQLType.i32:
        case SQLType.varchar:
        case SQLType.decimal:
        case SQLType.f64:
        case SQLType.text:
            return value;
        case SQLType.datetime:
            offset = value.getTimezoneOffset();
            value = new Date(value.getTime() - (offset * 60 * 1000));
            rt = value.toISOString();
            rt = rt.substring(0, rt.length - 1);
            rt = rt.split('T').join(' ');
            return rt;
        case SQLType.date:
            offset = value.getTimezoneOffset();
            value = new Date(value.getTime() - (offset * 60 * 1000));
            rt = value.toISOString().split("T")[0];
            return rt;
        case SQLType.time:
            return value;
        case SQLType.blob:
            return value.toString();
        default:
            return value;
    }
}
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