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!

From 357,345 reviews, clients rate our SQL Developers 4.86 out of 5 stars.
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    59 jobs found, pricing in USD

    I have a bug on my nodejs and html5 program. need expert to fix. work via any desk.

    $27 (Avg Bid)
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    Budget is 500 INR fixed and deadline 10 hours. Hi, I will share you more details only selected freelancer. Urgently Needed! Thanks

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    I am looking for a skilled SQL developer who can write queries to fetch operational data from our SQL Server database and display it on a databox to create dynamic dashboards. Ideal skills and experience for this job include: - Strong proficiency in SQL and experience with SQL Server - Familiarity with database management systems and data modeling - Ability to work with an existing schema and data to extract the desired operational data - Experience in creating dashboards or displaying data in a visual format - Good understanding of operational data and its relevance to business operations The main objective of this project is to create a user-friendly dashboard that presents real-time operational data in a visually appealing and easily understandable manner. The data should be fetched ...

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    Chatbot with LLM, openAPI, and own MSSQL, MYSQL, Postgres oracle, etc dataset, using streamlit. etc

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    Project Title: Convert Postgresql DB to MySQL DB Description: I am looking for a skilled freelancer to make script for convert my Postgresql database to a MySQL database. The project involves migrating the entire database while ensuring data integrity and preserving the existing structure. Skills and Experience: - Strong experience in database migration and conversion, specifically from Postgresql to MySQL - Proficiency in both Postgresql and MySQL database management systems - In-depth knowledge of data modeling and database design principles - Familiarity with SQL queries and scripting languages - Ability to handle large databases efficiently and optimize performance during the conversion process - Python - Bash

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    I'm looking for an experienced professional to develop a system using Microsoft Access to track current and predict future accounts receivable for construction projects. Specifically, the system needs to be able to track the contract amount and duration for each project. The contractor information and contact details, project location, and timeline should also be included. I have existing data for this task in a digital format that needs to be integrated into the system. The future accounts receivable must have moderately accurate predictions. The system should be reliable and provide insight into potential financial risks. This is a challenging project that will require extensive knowledge of Microsoft Access and database management. If you are someone who has strong technical s...

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    Orient DB graph database expert to help with database design and data structure for a moderately complex enterprise project. Estimated time required 1-2 weeks

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    Need inventory management database to link with QuickBooks enterprise. Numerically controlled inventory items with no limits on items that allow special pricing and costing calculations. Would prefer an order form be the input screen with different user levels and restrictions. Custom reports.

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    Looking for an expert backend developer with expertise in ASP.NET for a high-level complexity project. The project timeline is less than 1 month. Skills and experience required: - Strong proficiency in C# and ASP.NET - Extensive knowledge of SQL Server - Experience with high-level complexity projects and ability to handle tight deadlines.

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    ms access 5 days left

    I am looking to hire someone who can help me 1. Connect to a SQL server through a stored procedure available from client 2. Create scheduled refreshes 3. Create summarized queries for 2 reports for downstream work in excel power pivot

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    Task Breakdown: 1. Enable Offline Functionality: - Integrate SQL lite to facilitate the offline mode of the application. - Set up a system for data storage and retrieval while offline. - Implement a synchronization mechanism to update the main database once the application is back online, maintaining data consistency. 2. Connection Optimization with PGbouncer: - Install PGbouncer to the existing PostgreSQL database system. - Configure connection pooling to ensure efficient resource management and increased concurrent connections. - Test the system to verify connection stability and performance improvements. 3. Migrate Database to Digital Ocean: - Prepare the Digital Ocean environment for the database transfer, ensuring all required resources are in place. - Safel...

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    I Have A Password Manager With 2FA Authentication & SQLite Database. Everytime I Close The Python Application The 2FA Is Wrong. I Want To Save The 2FA Into SQLite Database For Future Retrieve

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    Need Netsuite developer 5 days left
    VERIFIED

    Need Netsuite developer experience : 6-8 years needed remotely

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    SAP Basis Support -- 2 5 days left
    VERIFIED

    I am looking for a SAP Basis support specialist to assist with the following services: Maintain SAP Integration with Concur Solutions The ideal candidate should have experience with SAP ECC 6.0 and be familiar with the specific requirements for this version. SAP Concur is striving to enhance the security posture of the SAP Integration with Concur Solutions (referred to as SAP ICS). Our records indicate you are using SAP ICS and action is required from your organization to update your solution to the proper version. For SAP on-premise customers, you must upgrade to the minimum release, which is listed in section 8.2 of the SAP Note here. Your connections need to be updated using the JSON Web Token (JWT) authentication to ensure no disruptions to your current service. As soon as you are...

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    Crypto trading bot 5 days left
    VERIFIED

    Hello, I want to build a trading bot for binance futures with machine learning component. I actually have a code base which needs to be reviewed and refracted, . Please review the code, if it can be used, maybe review it. Training data should be stored in SQL or Oracle database just so we bypass .csv which is enormously bad when there's a lot of data. I want to use as much indicators as possible, try different combinations and feed the data machine learning model. Please, suggest best solution in your mind.

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    DotNet Developers required for Improvement work in thenafter Host on server. Developers should also have knowledge about Merger of sourcecode and database of his done-work with other developer's done-work on GitHub. User emailid- @gmail.c Password- kaspersky Link for Explaining 'Improvements work to be done' video is below-

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    I am in need of an Oracle Apex programmer to assist me with an integration project for my existing business. The ideal candidate should have the following skills and experience: - Proficient in Oracle Apex development - Strong knowledge of database integration and management - Experience in working with APIs and web services - Familiarity with data mapping and transformation - Ability to troubleshoot and debug integration issues - المعرفة باللغة العربية تعتبر ميزة اضافية The level of integration required for this project is intermediate. The programmer should be able to connect various systems and applications within our business, ensuring smooth data flow and seamless communication. The timeline for this project is long-term, with a duration of more than 4 weeks. The programmer should...

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    Project Description: I am seeking a talented full-stack web developer to bring to life a digital platform called MemoirBox. The core function of this website is to allow users to capture, store, and reflect on memories through multimedia snippets. Basic Structure: Home/landing page introducing the platform. User registration/login system. Dashboard where users can add, edit, or delete memories. Features for uploading photos, videos, audio clips, and text entries. Integrations with popular social media platforms for memory import. Weekly or monthly multimedia memory summaries. Data encryption and security protocols. Mobile-responsive design. Key Deliverables: Fully functional user registration and authentication system. Intuitive dashboard for users to manage their memories. Multimedia up...

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    I am looking to move an Access Database from one PC to another. I have tried it but are getting Visual Basic errors

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    I have a project that requires the development of a deep learning model for medical images. The purpose of this model is to make diagnoses of multiple medical conditions. To achieve this goal, I will be using Magnetic Resonance Imaging (MRI) scans. This model should be able to recognize, identify, and interpret a variety of conditions and provide accurate readings in a timely manner. The best solution would be able to provide reliable results within a reasonable amount of time. I am looking for someone to help me create a successful deep learning model from scratch that meets these needs.

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    I am looking for an experienced database designer to create an Access database to help me better track customer information. The database will need to have more than 10 fields to capture and store customer information. It will also need to generate reports, but only occasionally. If you have experience creating Access databases and believe you can deliver a top-notch solution, please submit your proposals!

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    Databricks pyspark 3 days left
    VERIFIED

    Need help on databricks task. Need to parse fixed width file and load to unity catalog tables

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    My project is to create a dashboard that integrates three data elements: Data visualization, User management, and Database integration. To accomplish this, I will be working with PowerBI as my preferred platform. I will be managing educational data such as indicators (such as student performance, course enrollment, faculty data, etc), student and school data integrating them. The dashboard should allow users to create interactive worksheets and interactive reports that can be used to discover and identify trends in the collected data, as well as other insights that could help improve the educational system in the long run.

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    Sql and python trainer 3 days left
    VERIFIED

    Looking for an Advanced SQL and Python Trainer for Data Analysis Skills and Experience Required: - Advanced expertise in SQL and Python - Strong knowledge and experience in Data Analysis - Experience in training and teaching SQL and Python to individuals or groups - Excellent communication and teaching skills - Ability to provide more than 10 hours of training per week

    $8 / hr (Avg Bid)
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    Access database 3 days left

    I am looking for a skilled professional to create an Access database with the following requirements: Specific Features and Functionalities: - Reporting and analysis capabilities Data Complexity: - The data is moderately complex with multiple variables Data Migration: - No help is needed with data migration or importing existing data into the new Access database Ideal Skills and Experience: - Proficiency in Access database development - Strong understanding of reporting and analysis functionalities - Experience working with moderately complex data and multiple variables Please provide examples of previous Access database projects you have completed, along with your proposed timeline and cost for this project. Thank you.

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    I am looking for a skilled Oracle DBA who can assist with the migration of data from SqlServer to Oracle. The ideal candidate should have experience in Oracle DB and Oracle product installations. Requirements: - Skilled and experienced in Oracle DB and Oracle product installations - Ability to migrate data from SqlServer to Oracle - Familiarity with handling databases of less than 1TB in size - Knowledge of setting up the Oracle DB after migration If you have the required skills and experience, please apply with your relevant qualifications and portfolio.

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    I am looking for an expert .NET Core application developer with Angular experience to work on a personal project. Skills and experience required: - Strong expertise in .NET Core application development - Proficiency in Angular framework - Experience in developing personal projects - Ability to work independently and deliver high-quality results - Strong problem-solving and debugging skills - Excellent communication and collaboration skills This project does not have a specific deadline, so the developer can work at their own pace. However, I expect the developer to be committed and dedicated to delivering the project within a reasonable timeframe.

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    Nexton is looking for a Senior Back-end Engineer. “Connect remote technical team members in LATAM with the best global opportunities”. ? Compensation: USD6K - 9K/month.  100% remote.  PTO Policy - Contract Specific (12.5 work-days).  Holiday Policy - Local (8-10 days).  Equipment - Laptop and Charger  Career Growth - 1-1s (Weekly or Biweekly). ? Location: Remote (for Mexico and Colombia residents). ? Skills: AWS, Debugging, Ruby on Rails, SQL; Expert in 5 years of experience in Back-end development. English and Spanish conversational. Apply here: ⭐ Responsibilities:  Collaborate with client-side developers in web and mobile development to design new product features and concepts.  Develop RESTful JSON APIs that will be used by client-side teams to serve their a...

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    I am looking for a freelancer to install and configure applications on my VMware server. The applications to be installed include SQL community version, Adobe Creative Suite, AutoCAD, and Php/Phpmyadmin. These are community licences, and I do not need the freelancer to provide them. I also need the freelancer to create and configure one to three virtual machines. With experience in setting up applications and configuring virtual machines, I am sure you can complete this task easily and efficiently. If you are interested, please let me know and we can discuss further.

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    I am looking for an experienced AngularJS 1.6, C#, and Bootstrap developer who can create a website or application with the following requirements: Specific Features and Functionality: - CRUD operations - Responsive design Ideal Skills and Experience: - Expert level experience with AngularJS 1.6, C#, and Bootstrap, SQL - Proficient in performing CRUD operations - Experience with creating responsive designs Timeline: - The estimated timeline for completing the project is more than 12 months.

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    I am looking for a qualified freelancer to help me uninstall an existing SAP utility and then expand multiple tables for a data pull. Specifically, I am looking for assistance with uninstalling SAP HANA and SAP ECC; after which I need help expanding more than 10 tables in order to pull maintenance data. The successful freelancer will have significant experience in working with multiple SAP systems and must be able to complete the project within the specified time frame. If this is you, I would be happy to discuss this project further. Thank you for your consideration.

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    Rak kumar r 2 days left

    Hello! I am in need of assistance with a task that needs to be completed urgently (within 24 hours). Specifically, I need help with data ingestion, so it is essential that whoever I choose has the necessary skills and expertise to get the job done. No detail will be spared in completing this job, so accuracy and promptness is of the highest priority. I understand that the timeline for completion is urgent, but this must be done with the utmost care and attention to detail. If you are confident in your abilities and think you can provide assistance with what I need, I would be grateful if you could apply for the project. Thank you for considering.

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    As a business, I need a reliable freelancer to help me merge an SQL Server Based sheet into an offline sheet. The offline sheet I am working with is in the Excel format, and I have specific data mapping requirements that must be met. The data I will be working with is of a small volume, with fewer than 1000 rows. I am confident that a capable freelancer can help me tackle this project with a quick turnaround. This is a relatively easy job for someone who is well-versed in merging sheets!

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    I am aspiring business analyst and I am on the hunt for an experienced recruiter or a professional familiar with business analyst roles, especially within the travel industry, to conduct a mock interview and provide me with constructive feedback. Assess my performance during the interview and provide tangible recommendations and feedback that will help me navigate real-world interviews in the future. ? Duration: 15 minutes ? Platform: Zoom/teams/google meet

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    I am looking for a freelancer who can create a fresh Technical Specification document and design an advanced database schema for our marketplace project. Ideal Skills and Experience: - Strong technical writing skills to create a comprehensive Technical Specification document - Experience in designing complex database schemas for marketplace platforms - Proficiency in database management systems and SQL - Knowledge of marketplace functionality and best practices - Ability to understand and analyze business requirements to create an efficient and scalable database schema - Attention to detail and ability to document technical specifications accurately Key Deliverables: 1. Technical Specification Document: - Clear and detailed documentation of the project's technical requirements, ...

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    I am looking for a mid-level VB.net and SQL Server expert to assist me with both programming and database management tasks on a long-term basis. The ideal candidate should have the following skills and experience: - Strong proficiency in VB.net programming - Expertise in MS SQL Server database management - Ability to handle both programming and database management tasks efficiently - Mid-level experience in handling similar projects - Excellent problem-solving and communication skills The tasks is small and very simple, can be completed within a day or two days timeline. If you have the required skills and experience, please bid on this project.

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    I am looking for assistance with my existing Oracle Infrastructure. Specifically, I require assistance with the Oracle OVM Hypervisor, with a focus on maintenance and support. I am looking for someone who is knowledgeable and experienced in the Oracle infrastructure space and can provide comprehensive support. This would include installation, upgrade, and maintenance of this system to ensure optimal efficiency. I need someone who is reliable and has expertise to help me keep everything running smoothly.

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    Looking for a team or single one or two engineers to help build out an economic and commerce platform that incorporates a unique bidding process connecting back into an existing SQL data base (which needs to be restructured to cater for new front-end work / knowledge in old ASP). Front-end has been detailed in html just as a visual to help in the design and function. Appropriate programming language is something to discuss. Contract is for 3 to 6 months, or flexible working terms could be arranged as the workload will be ongoing. - Experience in adapting complex backend mechanics into easy UI interface. - Translation into mobile. - Need to have an understanding in currencies and values. - Knowledge on scalability.

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    Local
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    I am looking to integrate sentiment analysis with Azure AI into Microsoft Teams. This entails the ability to detect and assess emotions within the language used in team conversations. I am unsure whether I need assistance setting up and configuring Azure AI, but in either case the integration needs to be completed in a flexible timeframe. The end goal is to provide team members with an easier way to gauge and interpret sentiments within conversations.

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    I am looking for a skilled freelancer to help us integrate google authentication into our existing web application. Our application is a help desk ticketing software designed to help our customers manage their tickets efficiently. We need to add the google authentication feature to our already existing application as we want to ensure the highest level of security for our client's tickets. We just need to add google auth to our existing web application and don't require any other specific features integrated with it - however, if you can offer any advice or solutions that you believe would benefit our situation, we are open to suggestions. We look forward to receiving your proposals and working with you - thank you for your time.

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    A person is required willing to provide their Oracle certifications to qualify in an acquisition process. These certifications are needed: • Oracle Certified Professional 12c o Oracle Database Administration 2019 Certified Profesional o superior • Oracle GoldenGate Certified Implementation Specialist, en version 11g o superior. • Oracle Certified Expert, Performance Management and Tuning, en Oracle Database versión 11g, 12c o superior. • Oracle Certified Expert, RAC and Grid Infrastructure Administrator, en Oracle Database versión 12c o superior. • Oracle PL/SQL Developer Certified Associate

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    I am looking for freelance for Retalix. we need to add Vendor details, and status in our system.

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    Se busca persona que resida en America Latina, con certificaciones de fabricante Oracle : • Oracle Certified Professional 12c o Oracle Database Administration 2019 Certified Profesional o superior • Oracle GoldenGate Certified Implementation Specialist, en version 11g o superior. • Oracle Certified Expert, Performance Management and Tuning, en Oracle Database versión 11g, 12c o superior. • Oracle Certified Expert, RAC and Grid Infrastructure Administrator, en Oracle Database versión 12c o superior. • Oracle PL/SQL Developer Certified Associate

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    Talend ETL developer 1 day left
    VERIFIED

    I am looking for a Talend ETL developer to assist with a medium-sized data migration project using Talend Open Studio. The ideal candidate will have experience in data migration and be proficient in using Talend Open Studio for ETL tasks. Requirements: - Experience working with medium-sized datasets (1,000-10,000 records) - In-depth knowledge of data migration processes and best practices - Proficiency in using Talend Open Studio for ETL tasks - Ability to map, clean, and transform data according to project requirements - Familiarity with data integration and data cleaning concepts - Strong problem-solving and troubleshooting skills Responsibilities: - Analyze the current dataset and identify any data quality issues or gaps - Develop and implement data migration strategies using Talend...

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    BACK OFFICE WEBSITE We are looking for a skilled web developer to build a quality back office website with interactive videos for one of our customer. The website should have the following features: Type of job we will undertake for overseas customers like front office management, accounting, software development, billings and follow up, data entry, 24/7 office functions and many more. Sample websites are given below to have an idea about the type of website we are thinking. reference websites: , , Please do a thorough analysis before quoting as we have bad experience with previous developers because of changing the price every time. We need to quote a firm price and the services and contents we provide to them. No change in the pricing is possible once a project is accepted. Let u...

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    Crystal 2020 New views not displaying - Text Data We created new views in Oracle database. And I am trying to access the views in crystal 2020 version but I can’t see those views. But I could able to create command statements simply saying select * from New_view_name. And it is working correctly. But we need to use view directly instead of command. Skills and Experience: - Strong experience with Crystal Reports 2020 - Proficient in troubleshooting and resolving issues related to data display - Knowledge of text data formatting and rendering in Crystal Reports - Ability to identify and fix issues without error messages - Attention to detail and problem-solving skills

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    Have a project with SQL and Python code but need to convert in spark-sql and dataframe.

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    The method of shipping the order via express after the order is completed. This method must be linked between the express and the shipping company .. It is a merger between the website and the shipping company .. Tools : MVC C# , SQL , Html , CSS ,Html5 , CSS3, Bootstrap , JavaScript , Repository Pattern , AutoMapper

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    Data Modelling - Technical Support I am looking for someone who can provide technical support and assistance with data modelling. Specific Requirements: - I have specific requirements that need to be met for this project. - The ideal candidate should have experience in data modelling and be able to handle complex data structures. - They should also have a strong understanding of database design and optimization. Ideal Skills and Experience: - Experience in data modelling and database design. - Strong technical support and troubleshooting skills. - Proficiency in handling complex data structures. - Knowledge of database optimization techniques. - Ability to meet deadlines and work efficiently. Deadline: The expected deadline for this project is within a week.

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