TY CONF TI METHODS FOR OPTIMIZING SQL QUERIES IN HIGH-LOAD APPLICATIONS: PRACTICAL RECOMMENDATIONS KW SQL KW EXPLAIN KW JOIN KW query optimization KW filtering KW performance tuning KW execution plan analysis KW response time JO MODELING INFORMATION SYSTEMS AND TECHNOLOGIES – 2026 AU Krasikov, R.A. AU Avilova, O.A. AU Netesova, S.V. PY 2026 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov