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Kuv tuaj yeem tau txais tsuas yog hnub tim los ntawm DateTime hauv SQL?
Kuv tuaj yeem tau txais tsuas yog hnub tim los ntawm DateTime hauv SQL?

Video: Kuv tuaj yeem tau txais tsuas yog hnub tim los ntawm DateTime hauv SQL?

Video: Kuv tuaj yeem tau txais tsuas yog hnub tim los ntawm DateTime hauv SQL?
Video: Data Science with Python! Joining Tables Without a Common Column 2024, Kaum ib hlis
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MS SQL neeg rau zaub mov - Yuav ua li cas kom tau Hnub tim nkaus xwb los ntawm tus nqi hnub tim?

  1. Xaiv getdate();
  2. CONVERT (data_type [(ntev)], expression [, style])
  3. Xaiv CONVERT(VARCHAR(10), getdate(), 111);
  4. Xaiv Hloov pauv ( hnub , getdate());
  5. Cuaj hlis 1 2018 12: 00: 00 AM.
  6. Xaiv DATEADD(dd, 0, DATEDIFF(dd, 0, GETDATE()));
  7. CAST (qhia AS data_type [(ntev)])
  8. Xaiv CAST(getdate() AS hnub );

Kuj kom paub yog, Kuv yuav hloov lub sij hawm rau hnub tim hauv SQL li cas?

Sau a hnub los yog lub sij hawm, siv ib tug datetime2 cov ntaub ntawv hom. Yog li koj ua tsis tau hloov a SQL ntawv Server TIMESTAMP mus rau ib hnub /time - nws tsis yog ib qho hnub / sijhawm. Tab sis yog koj hais daim ntawv teev sijhawm tab sis tiag koj txhais tau tias a DATETIME kem - ces koj tuaj yeem siv ib qho ntawm cov siv tau hnub hom ntawv piav qhia hauv CAST thiab Hloov pauv lub ntsiab lus hauv MSDN pab.

Ib yam li ntawd, SQL datetime yog dab tsi? Txhais ib hnub uas yog ua ke nrog ib lub sij hawm ntawm ib hnub nrog ib feem ntawm lub vib nas this uas yog raws li 24-teev moos. Siv lub sijhawm, hnub tim, datetime2 thiab datetimeoffset cov ntaub ntawv hom rau kev ua haujlwm tshiab. Cov hom no haum nrog cov SQL ntawv Txuj. Lawv yog portable dua. lub sij hawm, datetime2 thiab datetimeoffset muab ntau vib nas this precision.

Hauv qhov no, kuv yuav ua li cas xaiv lub xyoo los ntawm hnub hauv SQL?

Yog koj siv SQL ntawv Server, koj tuaj yeem siv lub Xyoo () lossis DATEPART() ua haujlwm rau rho tawm tus xyoo los ntawm a hnub . Xaiv xyoo (CURRENT_TIMESTAMP); Xaiv DATEPART( xyoo , CURRENT_TIMESTAMP); Zoo ib yam li SQL ntawv Server, MySQL kuj txhawb cov Xyoo () ua haujlwm kom rov qab tau cov xyoo los ntawm a hnub.

Yuav ua li cas hloov hnub tim rau hnub hauv Excel?

Hloov hnub /time format cell rau hnub tsuas yog nrog formula 1. Xaiv ib tug dawb paug cell koj yuav muab qhov hnub tus nqi, tom qab ntawd sau cov mis = MONTH(A2) & "/" & HNUB (A2) & "/" & YEAR(A2) rau hauv lub formula bar thiab nias tus yuam sij Enter.

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