These are reserved by Adaptive Server as keywords (part of SQL command syntax).
add, all, alter, and, any, arith_overflow, as, asc, at, authorization, avg
begin, between, break, browse, bulk, by
cascade, case, char_convert, check, checkpoint, close, clustered, coalesce, commit, compute, confirm, connect, constraint, continue, controlrow, convert, count, count_big, create, current, cursor
database, dbcc, deallocate, declare, decrypt, default, delete, desc, deterministic, disk, distinct, drop, dummy, dump
else, encrypt, end, endtran, errlvl, errordata, errorexit, escape, except, exclusive, exec, execute, exists, exit, exp_row_size, external
fetch, fillfactor, for, foreign, from
goto, grant, group
having, holdlock
identity, identity_gap, identity_start, if, in, index, inout, insensitive, insert, install, intersect, into, is, isolation
jar, join
key, kill
level, like, lineno, load, lock
materialized, max, max_rows_per_page, min, mirror, mirrorexit, modify
national, new, noholdlock, nonclustered, nonscrollable, non_sensitive, not, null, nullif, numeric_truncation
of, off, offsets, on, once, online, only, open, option, or, order, out, output, over
partition, perm, permanent, plan, prepare, primary, print, privileges, proc, procedure, processexit, proxy_table, public
quiesce
raiserror, read, readpast, readtext, reconfigure, references, remove, reorg, replace, replication, reservepagegap, return, returns, revoke, role, rollback, rowcount, rows, rule
save, schema, scroll, scrollable, select, semi_sensitive, set, setuser, shared, shutdown, some, statistics, stringsize, stripe, sum, syb_identity, syb_restree, syb_terminate
table, temp, temporary, textsize, to, tracefile, tran, transaction, trigger, truncate, tsequal
union, unique, unpartition, update, use, user, user_option, using
values, varying, view
waitfor, when, where, while, with, work, writetext
xmlextract, xmlparse, xmltest, xmlvalidate