关键字

关键字是 SQL 语句中具有特殊含义的标识符。其中不可以直接用作标识符的关键字，称为保留关键字。以下是 KWDB 使用的保留关键字：

• A

  • ALL
  • ANALYSE
  • ANALYZE
  • AND
  • ANY
  • ARRAY
  • AS
  • ASC
  • ASYMMETRIC
  • ATTRIBUTE
  • ATTRIBUTES

• B

  • BOTH

• C

  • CASE
  • CAST
  • CHECK
  • COLLATE
  • COLUMN
  • CONCURRENTLY
  • CONSTRAINT
  • CREATE
  • CURRENT_CATALOG
  • CURRENT_DATE
  • CURRENT_ROLE
  • CURRENT_SCHEMA
  • CURRENT_TIME
  • CURRENT_TIMESTAMP
  • CURRENT_USER

• D

  • DDLREPLAY
  • DEFAULT
  • DEFERRABLE
  • DESC
  • DISTINCT
  • DO

• E

  • ELSE
  • END
  • EXCEPT

• F

  • FALSE
  • FETCH
  • FOR
  • FOREIGN
  • FROM

• G

  • GRANT
  • GROUP

• H

  • HAVING

• I

  • IN
  • INITIALLY
  • INTERSECT
  • INTO

• L

  • LATERAL
  • LEADING
  • LIMIT
  • LOCALTIME
  • LOCALTIMESTAMP

• N

  • NOT
  • NEVER
  • NULL

• O

  • OFFSET
  • ON
  • ONLY
  • OR
  • ORDER

• P

  • PLACING
  • PRIMARY

• R

  • REBALANCE
  • REFERENCES
  • RECURRING
  • RETURNING
  • RETURNS

• S

  • SAMPLE
  • SATISFYING
  • SELECT
  • SESSION_USER
  • SOME
  • SYMMETRIC

• T

  • TABLE
  • TAG
  • TAGS
  • TAG_TABLE
  • TAG_ONLY
  • THEN
  • TO
  • TRAILING
  • TRUE

• U

  • UNION
  • UNIQUE
  • USER
  • USING

• V

  • VARIADIC

• W

  • WHEN
  • WHERE
  • WINDOW
  • WITH