發表日期： 2022-11-30 17:09:03 瀏覽次數：43
江山百姓網推廣/如何辦理/收費標準/價格多少錢/排名代運營/代理商聯系方式-江山百姓網開戶費用/招聘/找工作/二手車/租車/房產/電話
而在日常生活中，人們也將看到越來越多的3D內容的應用。比如人們可以將3D掃描儀+3D打印機進行實物掃描打印或是實物二次創意編輯;在泛家居領域，3D掃描技術可以對手工建模難度非常大的紅木家具等進行快速三維掃描建模，消費者可以在線上720°查看家具模型細節，體驗沉浸式逛家具店的感覺;在陶瓷工藝品領域，通過3D掃描，可以將陶瓷工藝品3D數字化、數字化存檔、線下門店實景復刻等，讓人們體驗線上逛3D數字陶瓷工藝展館的樂趣。
CREATE AGGREGATE — 定義一個新的聚集函數
CREATE AGGREGATE name ( [ argmode ] [ argname ] arg_data_type [ , ... ] ) (
SFUNC = sfunc,
STYPE = state_data_type
[ , SSPACE = state_data_size ]
[ , FINALFUNC = ffunc ]
[ , FINALFUNC_EXTRA ]
[ , COMBINEFUNC = combinefunc ]
[ , SERIALFUNC = serialfunc ]
[ , DESERIALFUNC = deserialfunc ]
[ , INITCOND = initial_condition ]
[ , MSFUNC = msfunc ]
[ , MINVFUNC = minvfunc ]
[ , MSTYPE = mstate_data_type ]
[ , MSSPACE = mstate_data_size ]
[ , MFINALFUNC = mffunc ]
[ , MFINALFUNC_EXTRA ]
[ , MINITCOND = minitial_condition ]
[ , SORTOP = sort_operator ]
[ , PARALLEL = { SAFE | RESTRICTED | UNSAFE } ]
)
CREATE AGGREGATE name ( [ [ argmode ] [ argname ] arg_data_type [ , ... ] ]
ORDER BY [ argmode ] [ argname ] arg_data_type [ , ... ] ) (
SFUNC = sfunc,
STYPE = state_data_type
[ , SSPACE = state_data_size ]
[ , FINALFUNC = ffunc ]
[ , FINALFUNC_EXTRA ]
[ , INITCOND = initial_condition ]
[ , HYPOTHETICAL ]
[ , PARALLEL = { SAFE | RESTRICTED | UNSAFE } ]
)或者舊的語法CREATE AGGREGATE name (
BASETYPE = base_type,
SFUNC = sfunc,
STYPE = state_data_type
[ , SSPACE = state_data_size ]
[ , FINALFUNC = ffunc ]
[ , FINALFUNC_EXTRA ]
[ , COMBINEFUNC = combinefunc ]
[ , SERIALFUNC = serialfunc ]
[ , DESERIALFUNC = deserialfunc ]
[ , INITCOND = initial_condition ]
[ , MSFUNC = msfunc ]
[ , MINVFUNC = minvfunc ]
[ , MSTYPE = mstate_data_type ]
[ , MSSPACE = mstate_data_size ]
[ , MFINALFUNC = mffunc ]
[ , MFINALFUNC_EXTRA ]
[ , MINITCOND = minitial_condition ]
[ , SORTOP = sort_operator ]
)江山百姓網推廣/如何辦理/收費標準/價格多少錢/排名代運營/代理商聯系方式-江山百姓網開戶費用/招聘/找工作/二手車/租車/房產/電話
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