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Fix up hash interface and speed up save queries 10x

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Fix all optimizer
This commit is contained in:
Barak Michener 2015-08-10 15:41:22 -04:00
parent ab3f59d21f
commit aedd0401e2
5 changed files with 26 additions and 12 deletions
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17
graph/sql/sql_link_iterator.go
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@ -71,7 +71,7 @@ type sqlItDir struct {
type sqlIterator interface {
sqlClone() sqlIterator
buildSQL(next bool, val graph.Value, hash bool) (string, []string)
buildSQL(next bool, val graph.Value, topLevel bool) (string, []string)
getTables() []tableDef
getTags() []tagDir
buildWhere() (string, []string)
@ -246,10 +246,13 @@ func (l *SQLLinkIterator) tableID() tagDir {
}
}
func (l *SQLLinkIterator) buildSQL(next bool, val graph.Value, hash bool) (string, []string) {
query := "SELECT DISTINCT "
func (l *SQLLinkIterator) buildSQL(next bool, val graph.Value, topLevel bool) (string, []string) {
query := "SELECT "
if topLevel {
query += "DISTINCT "
}
hashs := ""
if hash {
if !topLevel {
hashs = "_hash"
}
t := []string{
@ -270,14 +273,18 @@ func (l *SQLLinkIterator) buildSQL(next bool, val graph.Value, hash bool) (strin
t = append(t, fmt.Sprintf("%s as %s", k.table, k.name))
}
query += strings.Join(t, ", ")
query += " WHERE "
constraint, wherevalues := l.buildWhere()
if constraint != "" {
query += " WHERE "
}
values = append(values, wherevalues...)
if !next {
v := val.(quad.Quad)
if constraint != "" {
constraint += " AND "
} else {
constraint += " WHERE "
}
t = []string{
fmt.Sprintf("%s.subject_hash = ?", l.tableName),