PostgreSQL 8.0 DocumentationUNION effectively appends the result of query2 to the result of query1 (although there is no guaran- tee that this is the order in which the rows are actually returned). Furthermore, it eliminates duplicate realize that forbidding the undesirable behaviors listed in Table 12-1 is not sufficient to guaran- tee true serializability, and in fact PostgreSQL’s Serializable mode does not guarantee serializable execution0 码力 | 1332 页 | 9.76 MB | 1 年前3- PostgreSQL 8.0 Documentationtables. • Constraint/Index/SERIAL names are now table_column_type with numbers appended to guaran- tee uniqueness within the schema (Tom) The SQL specification states that such names should be unique within0 码力 | 1422 页 | 9.92 MB | 1 年前3
- PostgreSQL 8.3 DocumentationUNION effectively appends the result of query2 to the result of query1 (although there is no guaran- tee that this is the order in which the rows are actually returned). Furthermore, it eliminates duplicate0 码力 | 2015 页 | 4.54 MB | 1 年前3
- PostgreSQL 8.4 DocumentationUNION effectively appends the result of query2 to the result of query1 (although there is no guaran- tee that this is the order in which the rows are actually returned). Furthermore, it eliminates duplicate0 码力 | 2224 页 | 5.05 MB | 1 年前3
- PostgreSQL 9.0 DocumentationUNION effectively appends the result of query2 to the result of query1 (although there is no guaran- tee that this is the order in which the rows are actually returned). Furthermore, it eliminates duplicate0 码力 | 2401 页 | 5.50 MB | 1 年前3
- PostgreSQL 9.4.26 Documentation
UNION effectively appends the result of query2 to the result of query1 (although there is no guaran- tee that this is the order in which the rows are actually returned). Furthermore, it eliminates duplicate0 码力 | 2452 页 | 5.99 MB | 1 年前3
- PostgreSQL 9.5.25 Documentation
UNION effectively appends the result of query2 to the result of query1 (although there is no guaran- tee that this is the order in which the rows are actually returned). Furthermore, it eliminates duplicate0 码力 | 2558 页 | 6.27 MB | 1 年前3
- PostgreSQL 9.1.24 Documentation
UNION effectively appends the result of query2 to the result of query1 (although there is no guaran- tee that this is the order in which the rows are actually returned). Furthermore, it eliminates duplicate0 码力 | 2667 页 | 6.57 MB | 1 年前3
- PostgreSQL 9.6.24 Documentation
UNION effectively appends the result of query2 to the result of query1 (although there is no guaran- tee that this is the order in which the rows are actually returned). Furthermore, it eliminates duplicate0 码力 | 2661 页 | 6.53 MB | 1 年前3
- PostgreSQL 9.2 DocumentationUNION effectively appends the result of query2 to the result of query1 (although there is no guaran- tee that this is the order in which the rows are actually returned). Furthermore, it eliminates duplicate0 码力 | 2829 页 | 7.02 MB | 1 年前3
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