更新时间:2024-11-15 GMT+08:00
COMMENT语句
COMMENT语句的迁移过程如下所示,输入一个复杂语句,迁移之后语句更加简化。
输入:
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CREATE MULTISET TABLE PDAT.t_tbl_comment ( Data_Dt DATE NOT NULL ,Data_Src VARCHAR(4) NOT NULL ,List_Make_Stat CHAR(1) ) PRIMARY INDEX(Data_Dt,Data_Src) ; COMMENT ON PDAT.t_tbl_comment IS 'comment test on table'; --------------- REPLACE VIEW PVW.v_vw_comment AS LOCKING ROW FOR ACCESS SELECT Data_Dt, Data_Src, List_Make_Stat FROM PDAT.t_tbl_comment; COMMENT ON PVW.v_vw_comment IS 'comment test on view'; COMMENT ON PVW.v_vw_comment.Data_Dt IS 'comment test on view column'; |
输出:
COMMENT ON TABLE PDAT.t_tbl_comment IS 'comment test on table'; COMMENT ON VIEW PVW.v_vw_comment IS 'comment test on view'; COMMENT ON COLUMN PVW.v_vw_comment.Data_Dt IS 'comment test on view column';
父主题: Teradata语法迁移