将保留以下关键字供 DynamoDB 使用。不要将这些关键字作为表达式中的属性名称。该列表不区分大小写。
如果要编写的表达式包含的属性名称与 DynamoDB 保留字冲突，可以定义表达式属性名称代替保留字。有关更多信息，请参阅 DynamoDB 中的表达式属性名称（别名）。
ABORT ABSOLUTE ACTION ADD AFTER AGENT AGGREGATE ALL ALLOCATE ALTER ANALYZE AND ANY ARCHIVE ARE ARRAY AS ASC ASCII ASENSITIVE ASSERTION ASYMMETRIC AT ATOMIC ATTACH ATTRIBUTE AUTH AUTHORIZATION AUTHORIZE AUTO AVG BACK BACKUP BASE BATCH BEFORE BEGIN BETWEEN BIGINT BINARY BIT BLOB BLOCK BOOLEAN BOTH BREADTH BUCKET BULK BY BYTE CALL CALLED CALLING CAPACITY CASCADE CASCADED CASE CAST CATALOG CHAR CHARACTER CHECK CLASS CLOB CLOSE CLUSTER CLUSTERED CLUSTERING CLUSTERS COALESCE COLLATE COLLATION COLLECTION COLUMN COLUMNS COMBINE COMMENT COMMIT COMPACT COMPILE COMPRESS CONDITION CONFLICT CONNECT CONNECTION CONSISTENCY CONSISTENT CONSTRAINT CONSTRAINTS CONSTRUCTOR CONSUMED CONTINUE CONVERT COPY CORRESPONDING COUNT COUNTER CREATE CROSS CUBE CURRENT CURSOR CYCLE DATA DATABASE DATE DATETIME DAY DEALLOCATE DEC DECIMAL DECLARE DEFAULT DEFERRABLE DEFERRED DEFINE DEFINED DEFINITION DELETE DELIMITED DEPTH DEREF DESC DESCRIBE DESCRIPTOR DETACH DETERMINISTIC DIAGNOSTICS DIRECTORIES DISABLE DISCONNECT DISTINCT DISTRIBUTE DO DOMAIN DOUBLE DROP DUMP DURATION DYNAMIC EACH ELEMENT ELSE ELSEIF EMPTY ENABLE END EQUAL EQUALS ERROR ESCAPE ESCAPED EVAL EVALUATE EXCEEDED EXCEPT EXCEPTION EXCEPTIONS EXCLUSIVE EXEC EXECUTE EXISTS EXIT EXPLAIN EXPLODE EXPORT EXPRESSION EXTENDED EXTERNAL EXTRACT FAIL FALSE FAMILY FETCH FIELDS FILE FILTER FILTERING FINAL FINISH FIRST FIXED FLATTERN FLOAT FOR FORCE FOREIGN FORMAT FORWARD FOUND FREE FROM FULL FUNCTION FUNCTIONS GENERAL GENERATE GET GLOB GLOBAL GO GOTO GRANT GREATER GROUP GROUPING HANDLER HASH HAVE HAVING HEAP HIDDEN HOLD HOUR IDENTIFIED IDENTITY IF IGNORE IMMEDIATE IMPORT IN INCLUDING INCLUSIVE INCREMENT INCREMENTAL INDEX INDEXED INDEXES INDICATOR INFINITE INITIALLY INLINE INNER INNTER INOUT INPUT INSENSITIVE INSERT INSTEAD INT INTEGER INTERSECT INTERVAL INTO INVALIDATE IS ISOLATION ITEM ITEMS ITERATE JOIN KEY KEYS LAG LANGUAGE LARGE LAST LATERAL LEAD LEADING LEAVE LEFT LENGTH LESS LEVEL LIKE LIMIT LIMITED LINES LIST LOAD LOCAL LOCALTIME LOCALTIMESTAMP LOCATION LOCATOR LOCK LOCKS LOG LOGED LONG LOOP LOWER MAP MATCH MATERIALIZED MAX MAXLEN MEMBER MERGE METHOD METRICS MIN MINUS MINUTE MISSING MOD MODE MODIFIES MODIFY MODULE MONTH MULTI MULTISET NAME NAMES NATIONAL NATURAL NCHAR NCLOB NEW NEXT NO NONE NOT NULL NULLIF NUMBER NUMERIC OBJECT OF OFFLINE OFFSET OLD ON ONLINE ONLY OPAQUE OPEN OPERATOR OPTION OR ORDER ORDINALITY OTHER OTHERS OUT OUTER OUTPUT OVER OVERLAPS OVERRIDE OWNER PAD PARALLEL PARAMETER PARAMETERS PARTIAL PARTITION PARTITIONED PARTITIONS PATH PERCENT PERCENTILE PERMISSION PERMISSIONS PIPE PIPELINED PLAN POOL POSITION PRECISION PREPARE PRESERVE PRIMARY PRIOR PRIVATE PRIVILEGES PROCEDURE PROCESSED PROJECT PROJECTION PROPERTY PROVISIONING PUBLIC PUT QUERY QUIT QUORUM RAISE RANDOM RANGE RANK RAW READ READS REAL REBUILD RECORD RECURSIVE REDUCE REF REFERENCE REFERENCES REFERENCING REGEXP REGION REINDEX RELATIVE RELEASE REMAINDER RENAME REPEAT REPLACE REQUEST RESET RESIGNAL RESOURCE RESPONSE RESTORE RESTRICT RESULT RETURN RETURNING RETURNS REVERSE REVOKE RIGHT ROLE ROLES ROLLBACK ROLLUP ROUTINE ROW ROWS RULE RULES SAMPLE SATISFIES SAVE SAVEPOINT SCAN SCHEMA SCOPE SCROLL SEARCH SECOND SECTION SEGMENT SEGMENTS SELECT SELF SEMI SENSITIVE SEPARATE SEQUENCE SERIALIZABLE SESSION SET SETS SHARD SHARE SHARED SHORT SHOW SIGNAL SIMILAR SIZE SKEWED SMALLINT SNAPSHOT SOME SOURCE SPACE SPACES SPARSE SPECIFIC SPECIFICTYPE SPLIT SQL SQLCODE SQLERROR SQLEXCEPTION SQLSTATE SQLWARNING START STATE STATIC STATUS STORAGE STORE STORED STREAM STRING STRUCT STYLE SUB SUBMULTISET SUBPARTITION SUBSTRING SUBTYPE SUM SUPER SYMMETRIC SYNONYM SYSTEM TABLE TABLESAMPLE TEMP TEMPORARY TERMINATED TEXT THAN THEN THROUGHPUT TIME TIMESTAMP TIMEZONE TINYINT TO TOKEN TOTAL TOUCH TRAILING TRANSACTION TRANSFORM TRANSLATE TRANSLATION TREAT TRIGGER TRIM TRUE TRUNCATE TTL TUPLE TYPE UNDER UNDO UNION UNIQUE UNIT UNKNOWN UNLOGGED UNNEST UNPROCESSED UNSIGNED UNTIL UPDATE UPPER URL USAGE USE USER USERS USING UUID VACUUM VALUE VALUED VALUES VARCHAR VARIABLE VARIANCE VARINT VARYING VIEW VIEWS VIRTUAL VOID WAIT WHEN WHENEVER WHERE WHILE WINDOW WITH WITHIN WITHOUT WORK WRAPPED WRITE YEAR ZONE
