Query for Outputting Data Using a Constraint
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Structured Query Language, abbreviated as SQL, is a domain-specific language used in programming and designed for managing data held in a relational database management system, or for stream processing in a relational data stream management system.
An good developer must be familiar with a few commands in SQL because it is such a strong development tool. The SQL queries listed below are important for coding and optimization. Almost every system that interacts with a SQL database will be affected by each query in the SQL tutorial.
Query for Outputting Data Using a Constraint
This SQL query retrieves the specified attributes from the table on the constraint Employee ID =0000
SELECT EMP_ID, NAME FROM EMPLOYEE_TBL WHERE EMP_ID = '0000';
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