Contents Aster SQL and Function Reference

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now(), V-129

now() function, V-124

nPath

examples, V-104

null

add NOT NULL constraint, V-9

handling nulls in COPY loads, V-24

indexes and nulls, V-30

null value, checking for, in SQL, V-96

NULLIF, V-133

NULLS FIRST, V-80

window functions and, V-137

NULLS LAST, V-80

window functions and, V-137

numbering window functions, V-139

object, V-61

GRANT on database objects, V-61

object naming conventions, V-199

octet_length operator for bit strings, character strings, V-103

octet_length() function, V-100

OFFSET, V-81

ON, for join conditions, V-78

ON DUPLICATE KEY UPDATE: Use MERGE instead, V-66

OR/AND/NOT operators, V-95

ORDER BY, V-80

consistent sorting of window function input rows, V-153

in OVER clause, V-146

namespace, V-82

PARTITION BY should always be used, V-156

window frames and, V-149

window functions and, V-137

order of input rows, V-146

order of output rows, V-80

window functions and, V-138

OR, bitwise, V-103

output format, time and date values, V-168

output row ordering, V-80

window functions and, V-138

OVER, V-137 in window function, V-137

not used to sort output, V-138

sort order of input rows, V-146

overlay() function, V-100

V--216 Database SQL and Function Reference, version 4.6.2

padding out text strings, V-101

parameter, V-83 performance settings, V-83

SET value, V-83 settings for SQL, V-83

parent table, V-37

change inheritance with ALTER TABLE, V-12

declare parent of new child table, V-37

passing along table privileges to children, V-61

PARTITION BY, V-137

always include when sorting, V-156

in window function, V-137

performance considerations, V-154

partition key

cannot add to or drop from existing table, V-13

CLUSTER and, V-21

CREATE TABLE AS with partition key, V-42

UPDATE not allowed, V-90

partition key: See distribution key

partitioning

automatic partition during COPY, V-25

CLUSTER and, V-21

repartitioning perfomance for window functions, V-154

serialized IDs and, V-162

pattern matching, V-108

bracket expression, V-114

list of approaches to pattern matching, V-108

regex matching rules, V-118

search and replace, V-111

with LIKE, V-108

with POSIX regular expression, V-110

with SIMILAR TO, V-109

with SUBSTRING, V-111

pattern matching functions, V-108

performance tuning, V-83

avoiding scanning for IS NULL, V-30

server-side cursors, V-46

SET command, V-83

permissions

applying to users, V-31

GRANT, V-61

list of SQL-MapReduce privileges, V-188

REVOKE, V-71

schemas for setting user rights, V-188

pipe operator for concatenation, V-100

PI() function, V-99

planner settings, V-83

portal, V-vi

position operator for bit strings, character strings, V-103

position() function, V-100

POSIX regular expression, V-110

PostgreSQL-nCluster command compatibility, V-3

POWER() function, V-99

primary key, V-38

cannot add to or drop from existing table, V-13

declaring in CREATE TABLE, V-38

serial columns and, V-163

aster data

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Contents Aster SQL and Function Reference

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