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Foreign key constraints: When to use ON UPDATE and ON DELETE
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Map function in MATLAB?
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What is the source code of the “this” module doing?
...oned in previous answers). Historically speaking, it's the Caesar cipher.
https://www.google.de/search?q=caesar+cipher&cad=h
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How exactly does a generator comprehension work?
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Realistic usage of the C99 'restrict' keyword?
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How to decode Unicode escape sequences like “\u00ed” to proper UTF-8 encoded characters?
... + $trail + 0x10000 - (0xD800 << 10) - 0xDC00;
}
// https://tools.ietf.org/html/rfc3629#section-3
// Characters between U+D800 and U+DFFF are not allowed in UTF-8
if ($cp > 0xD7FF && 0xE000 > $cp) {
$cp = 0xFFFD;
}
// ...
Combining C++ and C - how does #ifdef __cplusplus work?
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Git - What is the difference between push.default “matching” and “simple”
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How do I rename a column in a SQLite database table?
...ME COLUMN fails with an error and no changes are applied.
Image source: https://www.sqlite.org/images/syntax/alter-table-stmt.gif
Example:
CREATE TABLE tab AS SELECT 1 AS c;
SELECT * FROM tab;
ALTER TABLE tab RENAME COLUMN c to c_new;
SELECT * FROM tab;
db-fiddle.com demo
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Why unsigned integer is not available in PostgreSQL?
...d a lot, just too much work from my experience working with C programming.
https://www.postgresql.org/docs/10/datatype-numeric.html
integer 4 bytes typical choice for integer -2147483648 to +2147483647
serial 4 bytes autoincrementing integer 1 to 2147483647
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