SQL, or Structured Query Language, is a commonly used programming language for managing data in relational databases. A SQL Developer helps with the design, development and maintenance of databases. They ensure that the databases work correctly and efficiently and can also create testing procedures. With the help of a SQL Developer, clients are able to get an efficient system for managing their company data. By developing secure and reliable databases, businesses can maximize their potential and streamline all processes.

Here's some projects that our expert SQL Developers made real:

  • Improving query speed and accuracy on large datasets
  • Implementing views and stored procedures for quick retrieval of data
  • Designing database tables to store all types of data
  • Automating processes to reduce manual work while working with databases
  • Creating an efficient search function using complex SQL queries
  • Providing insights into data by creating analytical models

SQL is an invaluable tool for businesses today in managing their data efficiently. Our experienced SQL Developers help clients by developing a secure and reliable database that meets their needs. With the help of a SQL Developer, clients can ensure that their database systems work correctly and with maximum efficiency.

If you're looking for an expert SQL Developer to create efficient databases or enhance your existing systems, here at Freelancer.com you will find the perfect contractors for the task. Our wide network of talents has put together many successful SQL projects for satisfied customers around the world today. So if you're ready to take your business to the next level, post your project now on Freelancer.com and hire an expert SQL Developer to work with you on this journey!

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    New project for data transfer 6 Hari left
    TERVERIFIKASI

    Full details will be provided once an NDA is signed Requirements Familiar with SCADA, industrial control systems Knowledgeable with the following MQTT Mosquitto MQTT broker SQL mySql PHP Phyton scripting Web server

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    I'm looking for a proficient freelancer who can design and implement customised, interactive charts, graphs on a Superset dashboard. Here's more about what I need: - Creation of bar and line charts primarily. Your creative judgment in presenting information would be valued. - The ability to connect to a MySQL database from the dashboard is essential. - I expect you to have strong SQL skills, to accurately translate data into valuable, visual insights. Ideal skills and experience include: - In-depth knowledge of chart creation in Apache Superset - Sound experience with SQL operations and MySQL databases - Ability to interpret data and present it visually in a user-friendly manner.

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    I am looking for a skilled developer proficient in Apache Camel, Spring Boot, Kafka, and Ksqldb. The goal is to integrate Salesforce, ERP, and SAP using a cloud to cloud rest api approach. The successful applicant will have extensive experience leveraging these technologies to implement both staging and production deployment. Key Responsibilities: - Build a middleware solution for cloud to cloud rest api integration. - Ensure this solution adheres to best practice for handling transactions. Specifics: - An existing REST API for the Salesforce integration is present. - The Salesforce integration needs to support order management functionality. Ideal Skills: - In-depth knowledge of Apache Camel, Spring Boot, Kafka, Ksqldb. - Prior experience with Salesforce, ERP, and SAP integration...

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    I need the SAS Coder needed for multiple job. Details will be discussed

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    I need the SAS Coder needed for multiple job. Details will be discussed

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    I'm searching for a proficient technical writer with a solid foundation in PHP, Python, and Networking. Your core duties will include: - Developing technical reports on PHP, Python, and Networking. - Solving queries related to PHP, Python, and Networking. Ideal Candidate: - A technical writer with proven experience in software development - Deep understanding of PHP, Python, and Networking is a must. - Ability to translate complex information into simple, readable content. - Have knowledge of citation and referencing Your background in these areas will be essential in producing digestible content that those beginning to immerse themselves in these technical areas can understand. Your work will be instrumental in our readers' learning journey, making their first steps into ...

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    The system is in it Sales and management Administration consists of: Restaurants and cameras Tourism and Hotels Hospitals and medical centers Medical clinics School administration HR the sales Online stores Stores and supermarkets Pharmacies and Al-Dhakhir Sales and tank Money exchange and remittances Laboratories and factories Installment sales associations Sales in measurement Who can do it? Tell me the budget does not exceed 250. Please read the description. Good

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    I am seeking a skilled freelancer with experience in SQL to develop a utility program for my company. We utilize a ZKTeco fingerprint machine for tracking attendance, but the standard reports it generates are not meeting our needs. My hope is to have this application improve the readability and functionality of these reports. The tasks you'd undertake: - Building a lightweight application that can process the .dat files generated by the machine. This application should not merely replicate the machine's output but offer new ways to view and sort the information. Key features I'd like to see: - Ability to view attendance trends, which is not possible with the machine's default output. - Enhanced sort capabilities, allowing organization by department. To be successfu...

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    I require a functional customer portal built that allows account management, order tracking, and secure messaging between my business and customers. Key Features: - Order Tracking: This solution must enable customers to monitor the status of their orders in real-time. - Secure Messaging: It is essential that customers can communicate with us securely through the portal. Customer Data: - Contact Information: The portal should securely store customer's contact details for easier future transactions. - Order History: Customers should have access to their order history for seamless re-purchases or problem troubleshooting. - Payment Details: The solution will securely store customers' payment details for swift transaction processing. Access Control: - Login functional...

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    I need a professional with X Cart experience. We would just like to make a small update on our shipping method at check out. We would like for when a customer is checking out, the shipping method it is always set a default blank and they are forced to select the shipping method. There is also a pop up which i will attach to the files that we would like for it to only come out once but for some reason it keeps popping up each time a selection is made in this page.

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    I am in need of a highly skilled PHP and SQL professional who can assist with a redesign of my output table. The specific requirements for this project are: - Improvement of the layout and design, with an emphasis on improving the clarity of information presented in the table. - The addition of new columns or fields is not required. Instead, focus on reshaping the data structure to make the displayed data easier to digest. Ideal candidates for this job will have a solid background in PHP and SQL and a portfolio demonstrating their knack for user-friendly, clear, and efficient data displays. Understanding of modern aesthetic elements and color schemes is appreciated, though not the primary focus of this project.

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    PHP Expert with Extreme design skills 6 Hari left
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    Iam looking for passionate Full-Stack Developer with a keen eye for visual design. Technical Skills: Proficient in PHP and Angular or Vue frontend. Experienced with Microsoft SQL Server for database management and Familiar with stored procedures in SQL for database queries Strong understanding of user authentication and authorization (login, validation, management) Adept at CSV file manipulation and validation such as: parsing, data transformation, Aggregation, Joining and Merging, exporting, Find, edit or remove duplicates, Consolidate data, convert data types, clean data, Skilled in error handling and debugging to ensure application stability Experience with UI/UX design principles to create an intuitive user interface Functionality to import and manipulate data from CSV/XLS/XLSX fil...

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    I need a proficient PHP and SQL expert who can troubleshoot why my output isn't correct. Currently, I am facing a problem where my output is missing vital product details. Ideally, any freelancer bidding on this project should have proven experience in managing and rectifying this specific issue. Key skills required would include advanced proficiency in PHP and SQL, problem-solving abilities, and a keen eye for detail.

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    I am seeking a skilled app developer to create a mobile application tailored for middle school students focusing on three main areas of mathematics: Algebra, Geometry, and Basic Arithmetic. The application should be interactive, user-friendly, and engaging to help students understand and practicalize these mathematical concepts. I envisage an app designed to test and improve their mathematical abilities through regular quizzes and tests. Details include: - The primary users of the app will be middle school students, so the interface must be engaging and suitable for that age group. - The quiz should cover topics like Algebra, Geometry, and Basic Arithmetic. - The app should be operative on all standard mobile platforms, such as iOS and Android. Ideal Skills/Experience: - Strong backgrou...

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    I'm seeking a profoundly competent PHP and SQL expert who can effectively conduct data analysis on user behavior data, Your crucial responsibility is to: - Analyse the data and provide notable insights into user click-through rates. Ideal skills: - Proficiency in PHP and SQL - Sound knowledge in data analysis of user behavior data - Understanding of click-through rates - Proven experience in similar project This task requires precision and attention to detail, eluding the median for an analytical mind.

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    I am working on a college project which involves creating a MySQL database for data analysis. - Database System: The project needs to be done using MySQL. Experience in this platform would be ideal. - Purpose: The aim of the project is to implement effective data analysis. Therefore, skills in data analytics and data management are to Design Database. - Data Scale: Skills in handling medium scale data (up to 100GB) would be beneficial. Having a profound understanding in creating and administrating databases, as well as an ability to translate data into actionable insights would be perfect for this project.

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    Searching for an experienced .NET/Angular and Azure developer available for an 8-hour US shift. Your main responsibilities will include developing front-end components, building and maintaining APIs, and implementing security measures. Key Requirements: * Ability to work US hours * Expertise with .NET and Angular * Experience in API development and maintenance * Understanding of security protocols In your application: - Do include past work, specifically those involving both .NET and Angular. This will not only allow me to get a feel for your style and approach, but also your adaptability across different project types.

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    I'm seeking an expert .NET developer with a strong background in SQL database management, time management, and ERP systems. Your main responsibility will be to seamlessly integrate existing systems for improved efficiencies. Ideal Skills and Experience: - Expertise in ASP.NET development. - Proficiency in SQL database management, ensuring secure and efficient data manipulation. - Solid experience with ERP systems to streamline business processes. - Excellent time management skills, meeting the deadlines without compromising on quality. - Previous work with system integration projects will be highly advantageous. Bring your strategic problem-solving skills to this project and contribute to enhancing our business operations.

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    Live Coding Interview Platform 6 Hari left
    TERVERIFIKASI

    I am in need of a cutting-edge live coding interview platform that should be flexible to support the skills we are recruiting for. The ideal bidder should have substantial experience in developing platforms similar to the following: CodeSignal, CoderBytes, TestGorilla, HackerRank, HackerEarth, and Codility This platform needs to have an array of features that will elevate our interviewing process. To be more specific: - Code editing capabilities: The platform should offer functionality for live code editing, allowing our potential hires to demonstrate their coding knowledge before we recruit them. - Video conferencing: A built-in video conferencing feature is needed for ensuring smooth and well-structured communication between the parties during the interview.

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    ASP.NET.. coder 6 Hari left

    I am urgently looking for an experienced ASP.NET professional capable in back-end development. You'll primarily be working with C#, focusing on the development and refinement of server side logic. Key Tasks: - Enhancing server-side logic within ASP.NET - Managing data interactions as necessary There is no specific task list for APIs and database interactions, but understanding these areas would be advantageous, given the dynamic nature of this role. The project needs to be expedited, so I'm seeking individuals who can start immediately. Please, only committed, time-efficient, and experienced professionals apply. Your contribution will play a formidable part, so being familiar with tight deadlines and delivering quality work effectively will be valuable. This project is perf...

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    I am urgently looking for an experienced ASP.NET professional capable in back-end development. You'll primarily be working with C#, focusing on the development and refinement of server side logic. Key Tasks: - Enhancing server-side logic within ASP.NET - Managing data interactions as necessary There is no specific task list for APIs and database interactions, but understanding these areas would be advantageous, given the dynamic nature of this role. The project needs to be expedited, so I'm seeking individuals who can start immediately. Please, only committed, time-efficient, and experienced professionals apply. Your contribution will play a formidable part, so being familiar with tight deadlines and delivering quality work effectively will be valuable. This project is perf...

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    I am urgently looking for an experienced ASP.NET professional capable in back-end development. You'll primarily be working with C#, focusing on the development and refinement of server side logic. Key Tasks: - Enhancing server-side logic within ASP.NET - Managing data interactions as necessary There is no specific task list for APIs and database interactions, but understanding these areas would be advantageous, given the dynamic nature of this role. The project needs to be expedited, so I'm seeking individuals who can start immediately. Please, only committed, time-efficient, and experienced professionals apply. Your contribution will play a formidable part, so being familiar with tight deadlines and delivering quality work effectively will be valuable. This project is perf...

    $7 - $66
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    I am urgently looking for an experienced ASP.NET professional capable in back-end development. You'll primarily be working with C#, focusing on the development and refinement of server side logic. Key Tasks: - Enhancing server-side logic within ASP.NET - Managing data interactions as necessary There is no specific task list for APIs and database interactions, but understanding these areas would be advantageous, given the dynamic nature of this role. The project needs to be expedited, so I'm seeking individuals who can start immediately. Please, only committed, time-efficient, and experienced professionals apply. Your contribution will play a formidable part, so being familiar with tight deadlines and delivering quality work effectively will be valuable. This project is perf...

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    We want Developement of JavaSpring boot with Source Code - User authentication - Handling CRUD operations - Seamlessly integrating with external APIs The freelancer should possess extensive JavaSpringBoot experience particularly in the aforementioned areas. Additionally, proficiency in MySQL is essential as it stands as my preferred database management system for this project. I encourage bidders to include their relevant experience in their applications to be considered for this opportunity.

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    I urgently need a proficient full stack developer with demonstrable experience in Python and Django for my project. The developer's primary focus will involve enhancing the data manipulation and filtering feature, along with optimizing the performance of the internal web interface. Involved tasks: - Enhance data manipulation and filtering functionality by improving search functionality and implementing advanced data filtering options, and introducing pre-filled inputs for validation. - Analyze the existing framework, identify performance bottlenecks and suggest/implement ways to optimize it. Required skills: - Strong Python and Django skills. - A keen understanding of data manipulation and web performance optimization. - Experience in improving search functionality and advanced d...

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    SQL Database Management Required 5 Hari left
    TERVERIFIKASI

    With an unspecified SQL database system, I'm seeking an SQL database expert with broad knowledge in MySQL, Oracle, and SQL Server. Your role will entail assisting with data storage, management, and analysis. Key Requirements: - Proficiency in a wide range of SQL database systems - Expertise in data storage, relationships, and analysis - Ability to provide detailed project proposals, showcase past work and experience - Open to both SQL generalists and specialists Your application should demonstrate your versatility and proficiency in different SQL database management systems. Additionally, highlight your experience and deliverables from past jobs, to give a clear picture of what I can expect. Please, apply only if you have the skills and experience to handle diverse SQL-related tas...

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    Website Error Fix for Listing Items 4 Hari left
    TERVERIFIKASI

    I need help figuring out why my website receives a 500 error screen after trying to submit a product for review. This is not a wordpress website. This website is built with Laravel 10+, Bootstrap, Jquery, HTML, CSS, MYSQL.

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    I need an experienced developer with proficiency in both Vue.js and .NET, capable of delivering the project in a short time frame. - **Role Requirements** - Vue.js and .NET expertise, preferably in developing enterprise applications. - **Project Details** - The developer is expected to create an enterprise application with an interactive UI. - I place a significant emphasis on an engaging, usable and intuitive interface. - **Timeline** - The project needs to be completed ASAP. So, I'm looking for someone who can dedicate sufficient time immediately. -** Vue.js 2 and 3 experience ** with .Net Web API and sql server required on expert level Ideal candidates can demonstrate previous experience working on similar projects and have a strong understanding of UI/UX principle...

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    I'm in need of an experienced professional who can assist me in transferring a large-scale database. Key requirements include: - Proficiency in handling and transferring databases, specifically SQL Server. - Experience in migrating large databases, in this case, exceeding 10GB. - Demonstrated knowledge in handling data and ensuring its integrity. - Ability to ensure smooth transfer with minimal downtime. Your role will involve transferring selected data safely, efficiently and without data loss. Prior experience with similar projects is highly advantageous.

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    I'm in search of an Oracle Database Administrator proficient with Oracle 19c. The key task for this role would involve: - Data backup and disaster recovery I do not possess specific tools for these processes, so I need you to suggest appropriate tools that you're comfortable using. Your recommendations will be greatly valued as will your experience and skills in database backup and disaster recovery tasks. Ideal Skills: - Proficient in Oracle 19c - Expertise in database backup and disaster recovery - Experience in suggesting and using backup/recovery tools - Excellent problem-solving skills.

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    realizar un desarrollo punto de venta de servicios de asesoria y contables

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    I have to create an exe which contains data in gridview and the data also contains the path of the image. And all the images are saved inside the folder. Whose path is given in the database record. So I have to export excel from gridview. I have attached the files as an example, you can prefer that.

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    Full Stack Web Developer - 6 month contract, $5000/month USD We are seeking a web developer proficient in vue.js and node.js to help build an internal application for a staffing agency to manage their business operations. - frontend stack: vue, vite, vuetify - backend: node.js, express, postgresql - bonus: experience with 3rd party integrations such as quickbooks, stripe, twilio Be prepared to show a portfolio of your past work and to pass a coding interview testing your proficiency in Javascript.

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    MySQL Database Creation & Management 4 Hari left
    TERVERIFIKASI

    I'm looking for a skilled professional to design and implement a MySQL database system. The database cluster, mysql router, should feature: - data warehousing, Data analysis tools to interpret and present data in a meaningful way. - User management systems to organize and regulate users effectively. - Cluster management, sql router management. - Open source tool to monitor the slow query, query...effectively monitor the data base. Ideally, the system should be equipped to store an estimated 10,000 to 500,000 records. Strong experience with MySQL is imperative, alongside a working knowledge in data analysis, user management, and real-time data updating functionalities. Your portfolio demonstrating similar projects will be highly appreciated.

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    hola tengo una empresa de soporte tecnico en sistemas, actualmente utilizo glpi para gestionar los tickets/soporte de mis clientes, me gustaria hacer todo eso desde odoo. tickets -- mesa de ayuda --- seguimiento -- inventario de tecnologia -- reportes personalizaso de tickets por cliente-

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    SQL to .ods Exporter Using C# -- 2 3 Hari left
    TERVERIFIKASI

    I am looking for an experienced C# developer, with expertise in SQL and OpenOffice 4.x, to create an application that can efficiently export SQL data into an .ods (OpenOffice) file format. Key Requirements: - The application should be designed to export the SQL data using a specific .ods template provided. - The data structure within the .ods file should follow this style: representing all tables in one sheet, with each table separated by a blank row. - A in-depth understanding of SQL, C#, and OpenOffice 4.x is essential for this project. - Excellent attention to detail, since the data must be accurately transferred and properly formatted. If you have the necessary skills and experience, I invite you to place an educated bid. Looking forward to a successful collaboration.

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    Looking for an expert able to maneuver through Sage300 2023 tables to generate detailed Payment Voucher reports. Key Responsibilities: - Developing a Crystal report for a Payment Voucher - Ensuring accurate and reliable output Ideal candidate should possess: - Proficiency in Crystal Reports - Experience with Sage300 SQL Tables - Attention to detail and a high degree of accuracy - Demonstrable experience in creating similar reports The end product should be a highly professional, accurate Payment Voucher report, adaptable to future needs.

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    stand alone C# excel 3 Hari left
    TERVERIFIKASI

    The project involves developing a C# application to generate customized Excel sheets for various banking business areas, such as Payments, Forex, and Loans, using a .sdf database for managing preloaded lists. It will offer CRUD functionalities for data management and allow users to specify the number of records for each generated Excel report.

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    Gestion de stock et inventaire 2 Hari left
    TERVERIFIKASI

    j'ai besoin d'un logiciel pour le suivie de stock et de consommable dans une entreprise et une parti pour faire l'inventaire de ce stock mobile ( si vous avez un code source a vendre d'un logiciel complet) Merci

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    In need of a thorough professional with strong expertise in SQL, specifically Microsoft SQL Server, and data analytics. Your primary objective will be to solve intricate SQL queries and analyze data trends. Skills and Experience: - Proficient in Microsoft SQL Server - Comprehensive understanding of complex SQL queries - Skilled in Descriptive Data Analytics - Excellent problem-solving skills Responsibilities: - Solve complex SQL queries - Analyze data to identify significant trends - Provide insightful Descriptive Analytics This project requires a specific set of skills, hence, I am seeking an experienced individual that can confidently navigate and execute tasks in these areas.

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    Mysql and api optimization. 3 Hari left
    TERVERIFIKASI

    Hello, I have a simple php page and a complex database. My database size is very high and when I query a data I don't get a response for a very long time. I created a basic API and I have complex data in my database. I need a system that will delete repeated data in the database, destroy all unnecessary data and work with a proper, reliable api.

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    I need help running my application locally on my pc and also fix some issues on the application application is running react remix and the person must have knowledge about that and C#

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    MSSQL Stored Procedure Optimization 2 Hari left
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    I'm in need of a Database Administrator capable of tuning a stored procedure on my MSSQL database. The current issues lie heavily in the slow execution time. At the moment, our stored procedure runs over the duration of 1-5 minutes. Our performance objective post-tuning is to have this running time reduced to between 30 seconds and 1 minute. Skills & Experience: - Expertise in MSSQL - Proven record in Database Performance Tuning - Proficient understanding of Stored Procedure Optimization Your task will primarily tackle; - Identifying bottlenecks - Implementing efficient indexing - Streamlining the current structure for optimal performance Your bid should reflect your knowledge, experience, and the anticipated time frame for completion.

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    I have a Microsoft SQL Server installed and in operation, however, I am currently experiencing issues with slow query execution that ideally require rectification. I am seeking an experienced professional with specialization in performance tuning for Microsoft SQL Server. Skills & Experience Required: - Proven expertise in Performance Tuning and Query Optimization - In-depth understanding of SQL Server's underlying architecture, metadata and statistics to optimize queries - Solid experience in system analysis, profiling and tracing to diagnose and resolve performance problems - Ability to translate findings into actionable strategies to improve performance - Strong communication skills to effectively relay steps taken and results achieved. The main objective is to identify the...

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    I need an SQL and SSIS developer for my personal project. My primary goal is to optimize my SQL database, which is currently facing several performance issues. Key Problems: - Slow query execution - High resource consumption - Inefficient indexing The ideal candidate should have a strong background in SQL and SSIS for database optimization. A thorough knowledge of SQL query optimization, resource management, and indexing is essential. I am seeking an expert who can effectively address these specific issues and enhance the overall efficiency of my SQL Server development. Any suggestions for further improvements are also welcome.

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    SQL Server & SSIS Specialist Needed 2 Hari left
    TERVERIFIKASI

    As the project owner, I urgently need a skilled SQL Server and SSIS (SQL Server Integration Services) Developer to propel my database optimization objectives. Your primary tasks will focus on: - Fine-tuning SQL queries - Carrying out schema optimizations - Development using SQL I'm currently dealing with several performance issues, including slow query execution, high disk I/O, and index fragmentation. Therefore, for this task, the ideal candidate should possess a sharp understanding of query tuning and optimization, as well as practical experience with complex SQL Server and SSIS development projects. If you have proven experience in eliminating these types of issues and know how to implement effective optimizations, I am eager to work with you. Your high-level SQL Server knowle...

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    I am in need of an experienced Tally developer who can handle: - Customizing the Tally software to better suit the needs of my enterprise. - Creating and enabling integration routes with other systems to improve our workflow. - Generating and analyzing specific reports to aid decision-making. Applicants should have familiarity and experience in importing various data files, such as receipts, ledgers and vouchers into Tally to streamline our data management processes. Ideal candidates should have comprehensive knowledge in working with Tally and a proven track record in customization.

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    1. La solución debe partir de una página web (las características de la misma están en un documento adjunto en este mismo requerimiento) la cual debe contener una base de datos (llenado de los datos de los clientes) para capturar de información desde formularios, los formularios serían las interfaces de los módulos descritos y la base de datos estaría en la misma página web. Para la emisión de los dashboard y métricas debe conectarse a Power Bi. 2. Igualmente, si existe alguna solución alternativa estoy abierto a escucharla. 3. Se cuentan con registros de información para simular el llenado de data. 4. Las fórmulas y gráficos ya están creadas en Power BI para el módulo de ...

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    Advanced USA Payroll Cloud System 2 Hari left
    TERVERIFIKASI

    I'm seeking a developer to build a Cloud-Based USA Payroll Program. This system should have these critical features including: • Automatic tax calculations: To streamline the payroll process and ensure all calculations comply with tax regulations for BOTH state and federal taxes. This would be for all 50 USA states. I DO NOT have access to state tax tables. Seeking a programmer who can obtain this information. Send both state and federal tax deductions electronically to appropriate agencies . • Mobile cloud accessibility: The system should be accessible via all modern mobile devices to allow for remote accessibility. • Integration via API with the existing admin system built in php: Direct deposit capabilities and print check capabilitie...

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    Hola, Tengo un software en un servidor que contiene la información de nuestro catálogo de productos, tieneunas reglas de cambio de ean, stock etc y necesito cambiar unos valores

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