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TPSQLQuery encapsulates a dataset with a result set that is based on an SQL statement.

Use TPSQLQuery to access one or more PostgreSQL tables in a database using SQL statements. TPSQLQuery component is useful because it can:

      • Access more than one table at a time (called a "join" in SQL).
      • Automatically access a subset of rows and columns in its underlying table(s), rather than always returning all rows and columns.

See also: Methods, Properties