Tojimamatov Israiljon Nurmamatovich, and Muxsinova Sevinchxon Ikromjon qizi. “T-SQL TILINING ASOSIY OPERATORLARI ”. Ta’lim Innovatsiyasi Va Integratsiyasi, vol. 60, no. 1, Dec. 2025, pp. 11-15, https://journalss.org/index.php/tal/article/view/12697.