Date & Time Functions

Duration: 3 min

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Module outline

  1. Quantitative Ability: Percentage, Profit and Loss, Ratio and Proportion (Ratios), Average, Time and Work, Speed Time and Distance, Simple Interest and Compound Interest, Age Problems, Number System, Divisibility Rules, HCF LCM, Algebra, Permutation and Combination, Probability, Data Interpretation, Logarithm, Sequence and Series (Series), Powers and Exponents (Surds and Indices), Speed Mathematics and Basic Mathematics
  2. Logical Reasoning: Seating Arrangements, Puzzle Solving (Puzzles), Data Arrangement, Coding Decoding, Blood Relations, Directions (Direction Test), Ranking, Order and Sequence, Data Sufficiency, Venn Diagram, Inequality, Series (Number and Letter Series) (Numerical Relations and Reasoning), Logical Sequence Of Words, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Selection Decision Table (Decision Making), Analogy, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning)
  3. Verbal Ability: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Subject Verb Agreement (Verb Noun Agreement), Tenses, Articles, Preposition, Conjunction, Modals, Active Passive Voice (Voice), Direct and Indirect Speech, Vocabulary, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Completion (Fill in the blanks), Sentence Correction (Error Correction), Cloze Test (Cloze Passage), Facts, Inference and Judgements
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  9. SQL (Technical): SQL
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  13. Coding/Automata Round: Coding Questions by Yash Sir, C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir, Pseudo Codes
  14. Personality / Behavioral Assessment: Behavioral Assessment (Behavioral Competency Profiling) (Psychometric Test)
  15. Writing Assessment: English Writing Ability
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This video lecture introduces SQL date and time functions, focusing on capturing system time, extracting date parts, and performing calendar-based calculations. The instructor systematically explains core functions like CURRENT_DATE, CURRENT_TIMESTAMP, and EXTRACT, providing syntax and examples for each. The lesson then transitions to advanced operations such as DATEADD for modifying dates and DATEDIFF for calculating intervals between dates, concluding with validation and date part extraction functions.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The instructor begins by introducing the fundamental date and time functions in SQL. The lesson covers how to capture the current system date using CURRENT_DATE or CURDATE, and the current system date and time using CURRENT_TIMESTAMP or NOW. Examples are provided for each, showing the output format. The instructor then explains the EXTRACT function, which allows users to pull out specific parts of a date, such as the year, month, or day, and demonstrates its syntax with examples. The segment concludes with an introduction to the shorthand functions YEAR, MONTH, and DAY, which return these date parts as integers.

  2. 2:00 – 2:41 02:00-02:41

    The video transitions to advanced date operations. The instructor introduces DATEADD, which allows adding or subtracting a specific time interval (like days, months, or years) from a given date, with an example showing how to add 5 days to a date. Next, the lesson covers DATEDIFF, which calculates the difference in intervals (e.g., days) between two dates. The instructor also explains EOMONTH, which returns the last day of the month for a given date, and ISDATE, which validates whether a given string is a valid date. The segment concludes with the DATENAME function, which returns a string representation of a date part, such as the month name.

The lesson progresses logically from basic date capture and extraction to more complex date manipulation and validation. It equips learners with a foundational understanding of SQL date functions, enabling them to handle date-related queries in databases effectively.

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