.......................................... 2020 52.1. Overview ........................................................................................ 2020 52.2. pg_aggregate ........................ Catalogs ............................................................................................... 2020 52.2. pg_aggregate Columns ...................................................................... and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC

INTO ............................................................................................. 2020 SET ............................................................................................. and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC TIMESTAMP '2020-02-11 15:44:17', TIMESTAMP '2001-01-01'); Result: 2020-02-11 15:30:00 SELECT date_bin('15 minutes', TIMESTAMP '2020-02-11 15:44:17', TIMESTAMP '2001-01-01 00:02:30'); Result: 2020-02-11 15:32:30

and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC this field, it's best to use pg_get_constraintdef() to extract the definition of a check constraint. 2020 System Catalogs Note pg_class.relchecks needs to agree with the number of check-constraint entries the fallback behavior is to use the rule M3.2.0,M11.1.0, which corresponds to USA practice as of 2020 (that is, spring forward on the second Sunday of March, fall back on the first Sunday of November

and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC message contains a SASL challenge. Byten SASL data, specific to the SASL mechanism being used. 2020 Frontend/Backend Protocol AuthenticationSASLFinal (B) Byte1('R') Identifies the message as an the fallback behavior is to use the rule M3.2.0,M11.1.0, which corresponds to USA practice as of 2020 (that is, spring forward on the second Sunday of March, fall back on the first Sunday of November

and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC binary values has changed: it is no longer directly tied to the server’s internal representation. 2020 Chapter 50. Frontend/Backend Protocol There is a new “extended query” sub-protocol, which adds the the fallback behavior is to use the rule M3.2.0,M11.1.0, which corresponds to USA practice as of 2020 (that is, spring forward on the second Sunday of March, fall back on the first Sunday of November

and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC second argument, if present, must be type integer; it receives the type modifier associated with the 2020 Chapter 49. System Catalogs destination type, or -1 if there is none. The third argument, if present the fallback behavior is to use the rule M3.2.0,M11.1.0, which corresponds to USA practice as of 2020 (that is, spring forward on the second Sunday of March, fall back on the first Sunday of November

Operators by Increasing Precedence ............................................................... 2020 260. pgbench Functions .......................................................................... and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC Precedence Operator Description Example Result OR logical or 5 or 0 TRUE AND logical and 3 and 0 FALSE 2020 pgbench Operator Description Example Result NOT logical not not false TRUE IS [NOT] (NULL| TRUE|FALSE)

VALUES ................................................................................................ 2020 II. PostgreSQL Client Applications .............................................................. and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC TIMESTAMP '2020-02-11 15:44:17', TIMESTAMP '2001-01-01'); Result: 2020-02-11 15:30:00 SELECT date_bin('15 minutes', TIMESTAMP '2020-02-11 15:44:17', TIMESTAMP '2001-01-01 00:02:30'); Result: 2020-02-11 15:32:30

POLICY ............................................................................................. 2020 DROP PROCEDURE .................................................................................. and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC TIMESTAMP '2020-02-11 15:44:17', TIMESTAMP '2001-01-01'); Result: 2020-02-11 15:30:00 SELECT date_bin('15 minutes', TIMESTAMP '2020-02-11 15:44:17', TIMESTAMP '2001-01-01 00:02:30'); Result: 2020-02-11 15:32:30

and the supplied year is less than four digits, the year will be adjusted to be nearest to the year 2020, e.g., 95 becomes 1995. • In to_timestamp and to_date, negative years are treated as signifying BC no-longer-needed files from the archive directory 2019 pg_archivecleanup See Also pg_standby 2020 pg_controldata Name pg_controldata — display control information of a PostgreSQL database cluster the fallback behavior is to use the rule M3.2.0,M11.1.0, which corresponds to USA practice as of 2020 (that is, spring forward on the second Sunday of March, fall back on the first Sunday of November