SQL初级语法 [查询: SELECT]
摘要:
SQL查询: SELECT普通查询: SELECT "栏位名" FROM "表格名"DISTINCT 查询:(去掉重复) SELECT DISTINCT "栏位名" FROM "表格名"WHERE 条件查询: SELECT "栏位名" FROM "表格名" WHERE "条件"AND 或是 OR 多条件查询: SELECT "栏位名" FROM "表格名" WHERE "简单条件" {[A... 阅读全文
posted @ 2010-03-09 16:52 獨自の承諾 阅读(144) 评论(0) 推荐(1) 编辑