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我发送以下SQL到oracle分贝,并得到ORA-00907: missing right parenthesis
。为什么oracle认为这个查询格式不正确?
SELECT "LOGS"."ID",
"LOGS"."USER_ID",
"LOGS"."TIMESTAMP",
"LOGS"."SESSION_ID"
FROM "LOGS"
INNER JOIN "USERS" ON ("LOGS"."USER_ID" = "USERS"."USER_ID")
WHERE ("USERS"."USERNAME" IS NOT NULL
AND "LOGS"."TIMESTAMP" <= TO_TIMESTAMP(2013-03-26 23:59:59, 'YYYY-MM-DD HH24:MI:SS.FF')
AND "LOGS"."TIMESTAMP" >= TO_TIMESTAMP(2013-03-26 00:00:00, 'YYYY-MM-DD HH24:MI:SS.FF'))
这个问题的原因是什么?