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length shall not count when it sees nullc

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This commit is contained in:
Pavan-Nambi
2025-09-26 15:07:33 +05:30
parent 8f46721848
commit fdabbed539
2 changed files with 11 additions and 2 deletions
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8
core/vdbe/execute.rs
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@@ -8012,8 +8012,12 @@ impl Value {
pub fn exec_length(&self) -> Self { pub fn exec_length(&self) -> Self {
match self { match self {
Value::Text(t) => { Value::Text(t) => {
// Count Unicode scalar values (characters) let s = t.as_str();
Value::Integer(t.as_str().chars().count() as i64) let len_before_null = s.find('\0').map_or_else(
|| s.chars().count(),
|null_pos| s[..null_pos].chars().count(),
);
Value::Integer(len_before_null as i64)
} }
Value::Integer(_) | Value::Float(_) => { Value::Integer(_) | Value::Float(_) => {
// For numbers, SQLite returns the length of the string representation // For numbers, SQLite returns the length of the string representation

5
testing/scalar-functions.test
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@@ -939,6 +939,11 @@ do_execsql_test parse-large-integral-numeric-string-as-number {
SELECT (-104614899632619 || 45597) > CAST(0 AS NUMERIC); SELECT (-104614899632619 || 45597) > CAST(0 AS NUMERIC);
} {0} } {0}
# https://github.com/tursodatabase/turso/issues/3317
do_execsql_test length-999123 {
select length('a' || char(0) || 'b');
} {1}
# TODO: sqlite seems not enable soundex() by default unless build it with SQLITE_SOUNDEX enabled. # TODO: sqlite seems not enable soundex() by default unless build it with SQLITE_SOUNDEX enabled.
# do_execsql_test soundex-text { # do_execsql_test soundex-text {
# select soundex('Pfister'), soundex('husobee'), soundex('Tymczak'), soundex('Ashcraft'), soundex('Robert'), soundex('Rupert'), soundex('Rubin'), soundex('Kant'), soundex('Knuth'), soundex('x'), soundex(''); # select soundex('Pfister'), soundex('husobee'), soundex('Tymczak'), soundex('Ashcraft'), soundex('Robert'), soundex('Rupert'), soundex('Rubin'), soundex('Kant'), soundex('Knuth'), soundex('x'), soundex('');