缺少关键字(ORA-00905)-Erreur SQL:ORA-00905

下面的语句返回了前面提到的905错误。有什么想法吗?

CREATE MATERIALIZED VIEW SYNT_CE CACHE USING INDEX REFRESH ON DEMAND FORCE USING DEFAULT ROLLBACK SEGMENT DISABLE QUERY REWRITE
AS
WITH SYNT_AV AS (SELECT CIRC_BV, CASE WHEN SUM(C_AVANCEMENT) > 1 THEN 'non transmis' WHEN SUM(C_AVANCEMENT) = 1 THEN 't�l�phon�' ELSE 'confirm�' END AS C_AVANCEMENT
FROM (SELECT SYNT_BV.CIRC_BV, (CASE SYNT_BV.C_AVANCEMENT WHEN 'non transmis' THEN 2 WHEN 't�l�phon�' THEN 1 WHEN 'confirm�' THEN 0 END) AS C_AVANCEMENT
FROM SYNT_BV GROUP BY SYNT_BV.CIRC_BV, (CASE SYNT_BV.C_AVANCEMENT WHEN 'non transmis' THEN 2 WHEN 't�l�phon�' THEN 1 WHEN 'confirm�' THEN 0 END)) AV GROUP BY CIRC_BV)
SELECT TO_NUMBER(SYNT_BV.CIRC_BV) AS C_CE, SYNT_BV.CIRC_BV, SYNT_BV.CIRC_BV, SYNT_BV.CIRC_BV || case WHEN SYNT_BV.CIRC_BV = '01' then 'er Ardt' WHEN SYNT_BV.CIRC_BV <> '01' then 'ème Ardt'  as L_CIRC_BV, SYNT_BV.NUMERO_TOUR, SYNT_BV.NUMERO_TOUR, SYNT_BV.DATE_TOUR, SYNT_BV.TYPE_ELECTION, SYNT_BV.LIBELLE_ELECTION,
      SUM(SYNT_BV.NB_INSCRIT)        AS NB_INSCRIT,
      SUM(SYNT_BV.NB_VOTANT)         AS NB_VOTANT,
      SUM(SYNT_BV.NB_EMARGEMENT)     AS NB_EMARGEMENT,
      SUM(SYNT_BV.NB_PROCURATION)    AS NB_PROCURATION,
      SUM(SYNT_BV.NB_EXPRIME)        AS NB_EXPRIME,
      SUM(SYNT_BV.NB_VOTE_BLANC)     AS NB_VOTE_BLANC,
      SUM(SYNT_BV.NB_VOTE_NUL)       AS NB_VOTE_NUL,
      SUM(SYNT_BV.NB_VOTE_B_NUL)     AS NB_VOTE_B_NUL,
      SUM(SYNT_BV.NB_VOTE_B_NUL_ABS) AS NB_VOTE_B_NUL_ABS,
    [...]
    ORDER BY SYNT_BV.ARR_BV;

    CREATE INDEX SYNT_AR_INDEX_C_CAINSEE ON SYNT_AR (C_CAINSEE ASC);