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28 lines
781 B
Markdown
28 lines
781 B
Markdown
# Escaping String Literals With Dollar Quoting
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String literals in PostgreSQL are defined by surrounding the content with
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the `'` character. For string literals that contain the `'` character, you
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may have seen it escaped with a preceding `'`.
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```sql
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> select 'Isn''t this nice?';
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?column?
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------------------
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Isn't this nice?
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```
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This is easy enough to do, but can be error prone and doesn't work well if
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SQL is being programmatically generated. A great workaround is to escape
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string literals using what is called dollar quoting.
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```sql
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> select $$Isn't this even nicer?$$;
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?column?
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------------------------
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Isn't this even nicer?
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```
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Just wrap both ends in `$$` instead of `'`.
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[source](https://www.postgresql.org/docs/current/static/sql-syntax-lexical.html)
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