explain SELECT title FROM headings WHERE title LIKE '%cardiac%';

SQL Query Breakdown

This is a SQL SELECT statement with a LIKE pattern filter. Here's what each part does:

Clause-by-Clause Explanation

Clause	Meaning
`SELECT title`	Retrieve only the `title` column from the results
`FROM headings`	Look in the table named `headings`
`WHERE title LIKE '%cardiac%'`	Filter rows where the `title` contains the word cardiac

The `LIKE` Operator & Wildcards

The key part is LIKE '%cardiac%':

LIKE performs pattern matching on a string column (case-insensitive in most databases).
% is a wildcard that matches zero or more of any characters.
So '%cardiac%' means:
- anything before cardiac (including nothing)
- the literal text cardiac
- anything after cardiac (including nothing)

Examples of titles this would match:

Title
`cardiac arrest`
`acute cardiac failure`
`non-cardiac chest pain`
`cardiac` (exact match)
`pericardiac conditions` (contains the substring)

What the Query Does — Plain English

"Give me all titles from the headings table where the title contains the word 'cardiac' anywhere in the text."

Common Variations

-- Starts with "cardiac"
WHERE title LIKE 'cardiac%'

-- Ends with "cardiac"
WHERE title LIKE '%cardiac'

-- Exact match (same as =)
WHERE title LIKE 'cardiac'

-- Case-sensitive match (PostgreSQL)
WHERE title ILIKE '%cardiac%'   -- ILIKE = case-insensitive in PostgreSQL

Key Takeaways

% before and after the term = substring search (most flexible)
LIKE is useful but not indexed efficiently on large tables — for full-text search at scale, consider MATCH()...AGAINST() (MySQL) or tsvector/tsquery (PostgreSQL)

keyboard shortcut to go to file path in finder mac

Shift + Command + G

This opens the "Go to Folder" dialog in Finder, where you can type any file path directly (e.g. /usr/local/bin or ~/Downloads).

Bonus shortcuts:

Shortcut	Action
`Cmd + Shift + G`	Go to folder (type a path)
`Cmd + L`	(not Finder, but works in Open/Save dialogs to focus the path bar)
`Cmd + Shift + H`	Go to Home folder
`Cmd + Shift + D`	Go to Desktop
`Cmd + Shift + A`	Go to Applications
`Cmd + Up Arrow`	Go to parent folder

You can also press / or ~ while in Finder to instantly trigger the Go to Folder dialog pre-filled with / or ~/.

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