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Have sqlite3_stmt_scanstatus() report cycle, loop and row counts separately for creating an automatic index and using that automatic index.

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FossilOrigin-Name: 3bc9df82ea5b0fb085c56a326a65e19c9baf98d48d8fa6344c0d7004747594ba
This commit is contained in:
dan
2022-12-07 17:29:17 +00:00
parent 7c66faa634
commit f2cc3387f7
4 changed files with 117 additions and 9 deletions
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57
test/scanstatus2.test
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@ -170,9 +170,66 @@ do_graph_test 2.1 {
} {
QUERY (nCycle=nnn)
--SCAN x1 (nCycle=nnn)
--CREATE AUTOMATIC INDEX ON x2(c, d) (nCycle=nnn)
--SEARCH x2 USING AUTOMATIC COVERING INDEX (c=?) (nCycle=nnn)
}
#-------------------------------------------------------------------------
reset_db
do_execsql_test 4.0 {
CREATE TABLE rt1 (id INTEGER PRIMARY KEY, x1, x2);
CREATE TABLE rt2 (id, x1, x2);
}
do_graph_test 4.1 {
SELECT * FROM rt1, rt2 WHERE rt1.id%2 AND rt2.x1=rt1.x1;
} {
QUERY (nCycle=nnn)
--SCAN rt1 (nCycle=nnn)
--CREATE AUTOMATIC INDEX ON rt2(x1, id, x2) (nCycle=nnn)
--SEARCH rt2 USING AUTOMATIC COVERING INDEX (x1=?) (nCycle=nnn)
}
do_graph_test 4.2 {
SELECT rt2.id FROM rt1, rt2 WHERE rt1.id%2 AND rt2.x1=rt1.x1;
} {
QUERY (nCycle=nnn)
--SCAN rt1 (nCycle=nnn)
--CREATE AUTOMATIC INDEX ON rt2(x1, id) (nCycle=nnn)
--SEARCH rt2 USING AUTOMATIC COVERING INDEX (x1=?) (nCycle=nnn)
}
do_graph_test 4.3 {
SELECT rt2.id FROM rt1, rt2 WHERE rt1.id%2 AND (rt2.x1+1)=(rt1.x1+1);
} {
QUERY (nCycle=nnn)
--SCAN rt1 (nCycle=nnn)
--SCAN rt2 (nCycle=nnn)
}
do_graph_test 4.4 {
SELECT rt2.id FROM rt1, rt2 WHERE rt1.id%2 AND rt2.x1=(rt1.x1+1) AND rt2.id>5;
} {
QUERY (nCycle=nnn)
--SCAN rt1 (nCycle=nnn)
--CREATE AUTOMATIC INDEX ON rt2(x1, id) WHERE <expr> (nCycle=nnn)
--SEARCH rt2 USING AUTOMATIC PARTIAL COVERING INDEX (x1=?) (nCycle=nnn)
}
do_graph_test 4.5 {
SELECT v1.cnt FROM rt1, (
SELECT count(*) AS cnt, rt2.x1 AS x1 FROM rt2 GROUP BY x1
) AS v1 WHERE rt1.x1=v1.x1
} {
QUERY (nCycle=nnn)
--MATERIALIZE v1 (nCycle=nnn)
----SCAN rt2 (nCycle=nnn)
----USE TEMP B-TREE FOR GROUP BY
--SCAN rt1 (nCycle=nnn)
--CREATE AUTOMATIC INDEX ON v1(x1, cnt) (nCycle=nnn)
--SEARCH v1 USING AUTOMATIC COVERING INDEX (x1=?) (nCycle=nnn)
}
finish_test