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fix(mysql): support cloud column-store large-value preview

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zipg authored and GitHub committed 2026-08-17 14:54:47 +08:00
1 parent 50874601c1
commit 0856e40455
2 files changed
+8 -7
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crates/dbx-core/src/sql_dialect/table_select.rs
+1 -1
View File
@@ -148,7 +148,7 @@ fn build_large_value_preview_columns(options: &TableDataSelectSqlOptions) -> Opt
_ => return None,
};
let marker = if database_type == Some(DatabaseType::Mysql) {
format!("CONCAT('{marker_kind}:{preview_size}:', OCTET_LENGTH({quoted})) AS {marker_alias}")
format!("CONCAT('{marker_kind}:{preview_size}:', LENGTH({quoted})) AS {marker_alias}")
} else {
format!("'{marker_kind}:{preview_size}' AS {marker_alias}")
};
crates/dbx-core/src/sql_dialect/tests.rs
+7 -6
View File
@@ -705,11 +705,12 @@ fn builds_mysql_table_data_large_value_previews_without_truncating_keys() {
});
assert!(sql.starts_with("SELECT `id`, LEFT(`payload`, 4097) AS `payload`"));
assert!(sql.contains("CONCAT('T:4096:', OCTET_LENGTH(`payload`)) AS `__DBX_LARGE_VALUE_BYTES_T_1`"));
assert!(sql.contains("CONCAT('T:4096:', LENGTH(`payload`)) AS `__DBX_LARGE_VALUE_BYTES_T_1`"));
assert!(sql.contains("LEFT(`raw_value`, 4097) AS `raw_value`"));
assert!(sql.contains("CONCAT('B:4096:', OCTET_LENGTH(`raw_value`)) AS `__DBX_LARGE_VALUE_BYTES_B_2`"));
assert!(sql.contains("CONCAT('B:4096:', LENGTH(`raw_value`)) AS `__DBX_LARGE_VALUE_BYTES_B_2`"));
assert!(sql.contains("LEFT(`metadata`, 4097) AS `metadata`"));
assert!(sql.contains("CONCAT('T:4096:', OCTET_LENGTH(`metadata`)) AS `__DBX_LARGE_VALUE_BYTES_J_3`"));
assert!(sql.contains("CONCAT('T:4096:', LENGTH(`metadata`)) AS `__DBX_LARGE_VALUE_BYTES_J_3`"));
assert!(!sql.contains("OCTET_LENGTH"));
assert!(!sql.contains("__DBX_LARGE_VALUE_BYTES_0"));
}
@@ -741,10 +742,10 @@ fn previews_mysql_bounded_string_columns_only_above_the_active_budget() {
});
assert!(sql.starts_with("SELECT `id`, `image_mime`, LEFT(`image_data`, 420) AS `image_data`"));
assert!(sql.contains("CONCAT('B:419:', OCTET_LENGTH(`image_data`)) AS `__DBX_LARGE_VALUE_BYTES_B_2`, LEFT(`image_url`, 420) AS `image_url`"));
assert!(sql.contains("CONCAT('T:419:', OCTET_LENGTH(`image_url`)) AS `__DBX_LARGE_VALUE_BYTES_T_3`"));
assert!(sql.contains("CONCAT('B:419:', LENGTH(`image_data`)) AS `__DBX_LARGE_VALUE_BYTES_B_2`, LEFT(`image_url`, 420) AS `image_url`"));
assert!(sql.contains("CONCAT('T:419:', LENGTH(`image_url`)) AS `__DBX_LARGE_VALUE_BYTES_T_3`"));
assert!(sql.contains("LEFT(`large_note`, 420) AS `large_note`"));
assert!(sql.contains("CONCAT('T:419:', OCTET_LENGTH(`large_note`)) AS `__DBX_LARGE_VALUE_BYTES_T_4`"));
assert!(sql.contains("CONCAT('T:419:', LENGTH(`large_note`)) AS `__DBX_LARGE_VALUE_BYTES_T_4`"));
assert!(sql.contains("LEFT(`large_binary`, 420) AS `large_binary`"));
assert!(!sql.contains("LEFT(`image_mime`"));
}