Обсуждение: [PATCH][DOC][MINOR] Fix incorrect lexeme limit in textsearch docs

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Dharin Shah

Дата:

28 декабря 2025 г., 00:09:14

Hello,

and this line

- The number of lexemes must be less than 2^64

Docs wrongly claim "lexemes must be < 2^64" but the actual constraint is
1 MB total storage (MAXSTRPOS), and no 2^64 check exists in the code.

From src/include/tsearch/ts_type.h:

#define MAXSTRPOS ( (1<<20) - 1) // 1,048,575 bytes

typedef struct {
int32 size; // number of lexemes
...
} TSVectorData;

The attached patch:

- Removes the incorrect 2^64 claim
- Clarifies this means "distinct lexemes in a single tsvector value"

Thanks,
Dharin