SQL WHERE 子句
sql where 子句
where 子句用于提取滿足指定條件的數(shù)據(jù)庫記錄。
1. where 語法
select column_name,column_name
from table_name
where column_name operator value;
from table_name
where column_name operator value;
where 子句用于提取滿足指定條件的數(shù)據(jù)庫記錄。