1.3 Building Blocks of Oracle SQL

It’s always important to know the fundamentals of SQL before writing or executing any SQL query. So, you must familiarize with the concepts covered in this chapter.

1.3.1 Schema Objects
1.3.2 Data Types
1.3.3 Operators
1.3.4 Literals
1.3.5 Variables
1.3.6 Constants
1.3.7 Substitution Variables
1.3.8 NULL in Oracle

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