/usr/share/codeblocks/lexers/lexer_sql.sample is in codeblocks-common 13.12-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | -- comment
/* comment */
SELECT * FROM bar WHERE foo = 10 AND xxx LIKE 'abcd%'
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