Dab tsi yog datatype rau lub sijhawm hauv Oracle?

Video: Dab tsi yog datatype rau lub sijhawm hauv Oracle?

2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47

Date/Time Datatypes

Cov ntaub ntawv hom Syntax	Oracle 9 i
daim ntawv teev sijhawm (fractional vib nas this precision) nrog rau lub sijhawm	fractional vib nas this precision yuav tsum yog tus lej ntawm 0 thiab 9. (default yog 6)
daim ntawv teev sijhawm (fractional vib nas this precision) nrog lub sijhawm hauv cheeb tsam	fractional vib nas this precision yuav tsum yog tus lej ntawm 0 thiab 9. (default yog 6)

Hais txog qhov no, dab tsi yog datatype rau lub sijhawm?

Hnub tim thiab Sijhawm cov ntaub ntawv hom

Hom ntaub ntawv	Hom ntawv	Qhov tseeb
sij hawm	hh:mm:ss[.nnnnnn]	100 nanoseconds
hnub	YYYY-MM-DD	1 hnub
lub sijhawm me me	YYYY-MM-DD hh:mm:ss	1 feeb
hnub tim	YYYY-MM-DD hh:mm:ss[.nn]	0.00333s ob

Ib sab saum toj no, hom ntaub ntawv twg yog siv los khaws ob hnub thiab sijhawm rau kab hauv Oracle? TIMESTAMP

Kuj paub, hom hnub Oracle puas suav nrog lub sijhawm?

Hnub tim hom hauv oracle ua tsis yog suav nrog lub sijhawm tus nqi.

Lub sijhawm database hauv Oracle yog dab tsi?

Sijhawm tsam yog teem caij thaum database tsim los yog siv CREATE DATABASE . Nws tuaj yeem hloov kho siv ALTER DATABASE lus txib. Database sij hawm tsis tuaj yeem hloov pauv yog tias ib kab ntawm hom TIMESTAMP Nrog [LOCAL] TIMEZONE muaj nyob rau hauv database . Sijhawm tsam tuaj yeem teeb tsa hauv Qhov Chaw cheeb tsam format or [+|-]HH:MM format.

Pom zoo:

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