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SELECT clause
Applies to ✅ Open Source Edition ✅ Express Edition ✅ Professional Edition ✅ Enterprise Edition
The SELECT clause lets you project your own record types, referencing table fields, functions, arithmetic expressions, etc. The DSL type provides several methods for expressing a SELECT clause:
-- The SELECT clause SELECT BOOK.ID, BOOK.TITLE SELECT BOOK.ID, TRIM(BOOK.TITLE)
// Provide a varargs Fields list to the SELECT clause: Select<?> s1 = create.select(BOOK.ID, BOOK.TITLE); Select<?> s2 = create.select(BOOK.ID, trim(BOOK.TITLE));
The following sections illustrate various features and subclauses of the SELECT clause.
Table of contents
- 3.5.3.1.1.
- Projection type safety
- 3.5.3.1.2.
- SelectField
- 3.5.3.1.3.
- Tables as SelectField
- 3.5.3.1.4.
- SELECT *
- 3.5.3.1.5.
- SELECT * EXCEPT (...)
- 3.5.3.1.6.
- SELECT DISTINCT
- 3.5.3.1.7.
- SELECT DISTINCT ON
- 3.5.3.1.8.
- Convenience methods
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References to this page
- Implicit join type
- The SELECT statement
- SelectField
- Tables as SelectField
- WINDOW clause
- Ordering by field index
- Lexical and logical SELECT clause order
- Scalar functions
- Grouping
- Nested records
- Optional column expressions
- Optional conditional expressions
- Declaration vs reference
- GROUP BY <column index>
- Unnecessary EXISTS subquery clauses
- Record vs. TableRecord
- Too Many Columns
- SQL: SELECT *
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