Скачать или смотреть Get Array Dimensions & Length in PostgreSQL

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Learn how to get array dimensions, length, and bounds in PostgreSQL using array_dims, array_length, and array_upper.

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Description
In this video, we explore how to find array dimensions and length in PostgreSQL quickly and accurately. Whether you’re working with simple arrays or complex multi-dimensional arrays, PostgreSQL provides powerful functions to inspect array structure.

We’ll demonstrate how to use array_dims to get the full dimension ranges, array_length to get the size of a specific dimension, and array_upper / array_lower to find the upper and lower index bounds. You’ll see practical examples using salary arrays and weekly schedules to make these concepts crystal clear.

By the end of this session, you’ll know how to instantly check the shape and size of your arrays in PostgreSQL, making it easier to debug, validate, and optimize your queries.

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