[!INCLUDE [sqlserver2016-asdb-asdbmi-asa-pdw-fabricdw-fabricsqldb](../../includes/applies-to-version/sqlserver2016-asdb-asdbmi-asa-pdw-fabricdw-fabricsqldb.md ...
I wasted 3 months memorizing random SQL concepts. Then I realized: They all fit into 9 categories. Everything changed. 𝐓𝐡𝐞 𝐌𝐄𝐆𝐀 𝐆𝐔𝐈𝐃𝐄: 1️⃣ Data Integrity PRIMARY KEY, FOREIGN KEY, UNIQUE ...
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