{
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    "displayName": "SQL",
    "paradigms": [
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      "query"
    ],
    "description": "SQL (Structured Query Language) is the standard declarative language for\nquerying, manipulating, and defining data in relational database management\nsystems (RDBMS). Core constructs include SELECT with joins, aggregations,\nand window functions; DML (INSERT, UPDATE, DELETE); DDL (CREATE TABLE,\nALTER); and transaction control (BEGIN, COMMIT, ROLLBACK).\n\nEach RDBMS (PostgreSQL, MySQL, SQLite, SQL Server, BigQuery) extends\nstandard SQL with proprietary syntax, functions, and optimization hints.\nModern analytical SQL (via BigQuery, Snowflake, DuckDB) adds features\nlike PIVOT, QUALIFY, and ARRAY/STRUCT types. SQL skills are essential\nacross data science, backend engineering, data engineering, and business\nintelligence domains.\n"
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