libsql-wal 0.1.0-alpha.1

wal implementation for libsql
Documentation 
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  EXPLAIN QUERY PLAN SELECT 5 UNION ALL SELECT 3 ORDER BY 1


  SELECT 5 UNION ALL SELECT 3 ORDER BY 1


  SELECT 986 AS x GROUP BY X ORDER BY X


  CREATE TABLE abc(a, b, c);
  INSERT INTO abc VALUES(1, 2, 3);
  INSERT INTO abc VALUES(4, 5, 6);
  INSERT INTO abc VALUES(7, 8, 9);
  SELECT (
    SELECT 'hardware' FROM ( 
      SELECT 'software' ORDER BY 'firmware' ASC, 'sportswear' DESC 
    ) GROUP BY 1 HAVING length(b)
  )
  FROM abc;


  CREATE TABLE t7(a,b);
  CREATE INDEX t7a ON t7(a);
  CREATE INDEX t7ab ON t7(a,b);
  EXPLAIN QUERY PLAN
  SELECT * FROM t7 WHERE a=?1 ORDER BY rowid;


  PRAGMA cache_size = 5;
  CREATE TABLE t1(a, b);
  CREATE INDEX i1 ON t1(a);


  WITH cnt(i) AS (
    SELECT 1 UNION ALL SELECT i+1 FROM cnt WHERE i<10000
  )
  INSERT INTO t1 SELECT i%2, randomblob(500) FROM cnt;


  DROP TABLE IF EXISTS t1;
  CREATE TABLE t1(x INTEGER PRIMARY KEY);
  INSERT INTO t1 VALUES(1),(2);
  DROP TABLE IF EXISTS t2;
  CREATE TABLE t2(y);
  INSERT INTO t2 VALUES(9),(8),(3),(4);
  SELECT (SELECT x||y FROM t2, t1 ORDER BY x, y);


  CREATE TABLE t10(a,b);
  INSERT INTO t10 VALUES(1,2),(8,9),(3,4),(5,4),(0,7);
  CREATE INDEX t10b ON t10(b);
  SELECT b, rowid, '^' FROM t10 ORDER BY b, a LIMIT 4;