seaweedfs/weed/filer/ydb/ydb_queries.go

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2022-05-01 15:33:03 +00:00
package ydb
const (
createQuery = `
PRAGMA TablePathPrefix("%s");
CREATE TABLE file_meta (
dir_hash int64,
name Utf8,
directory Utf8,
meta String,
PRIMARY KEY (dir_hash, name)
);`
insertQuery = `
DECLARE $dir_hash int64;
DECLARE $name AS Utf8;
DECLARE $directory AS Utf8;
DECLARE $meta AS String;
UPSERT INTO file_meta
(dir_hash, name, directory, meta)
VALUES
($dir_hash, $name, $directory, $meta);`
updateQuery = `
DECLARE $dir_hash int64;
DECLARE $name AS Utf8;
DECLARE $directory AS Utf8;
DECLARE $meta AS String;
REPLACE INTO file_meta
(dir_hash, name, directory, meta)
VALUES
($dir_hash, $name, $directory, $meta)
COMMIT;`
deleteQuery = `
DECLARE $dir_hash int64;
DECLARE $name AS Utf8;
DELETE FROM file_meta
WHERE dir_hash == $dir_hash AND name == $name;
COMMIT;`
findQuery = `
DECLARE $dir_hash int64;
DECLARE $name AS Utf8;
SELECT meta
FROM file_meta
WHERE dir_hash == $dir_hash AND name == $name;`
deleteFolderChildrenQuery = `
DECLARE $dir_hash int64;
DECLARE $directory AS Utf8;
DELETE FROM file_meta
WHERE dir_hash == $dir_hash AND directory == $directory;
COMMIT;`
ListDirectoryQuery = `
DECLARE $dir_hash int64;
DECLARE $directory AS Utf8;
DECLARE $start_name AS Utf8;
DECLARE $prefix AS Utf8;
DECLARE $limit AS int64;
SELECT name, meta
FROM file_meta
WHERE dir_hash == $dir_hash AND directory == $directory and name %v $start_name and name LIKE '$prefix%'
ORDER BY name ASC LIMIT $limit;`
)