SQL INSERT INTO statement adds data of one or more records to a database. Either all the rows can be inserted, or a subset may be chosen using a condition. Here is the syntax of the INSERT INTO statement. The INSERT INTO is followed by a table name with its columns and followed by...
SQL Insert Query - Learn how to use the SQL INSERT query to add new records to your database efficiently. Explore examples and best practices.
1、插入数据 INSERT INTO 1.1 INSERT INTO VALUES 1.2 INSERT INTO SELECT ... 2、更新数据 UPDATE SET 3、删除数据 DELETE FROM 4、 MySQL8新特性:计算列 5、综合案例 1、插入数据 INSERT INTO 使用INSERT 语句向表中插入数据。 1.1 INSERT INTO VALUES 情况1:为表的所有字段按默认顺序插入数据 INSERT INTO ...
基于Hive的离线统计/数据仓库,一般是把SQL封装到shell脚本中去,使用hive -e “query sql …”,然后使用调度器:crontab,去调度 创建数据库 CREATE (DATABASE|SCHEMA) [IF NOT EXISTS] database_name [COMMENT database_comment] [LOCATION hdfs_path] [WITH DBPROPERTIES (property_name=property_value, ...)]...
1. **Statement**:用于执行静态 SQL 语句(不含参数),无法直接处理占位符 `?`,需要手动拼接参数,易导致 SQL 注入风险。 2. **PrepareStatement**:专为预编译 SQL 设计,支持占位符 `?`,可通过方法(如 `setString`)安全填充参数,提升效率和安全性。适合题目中的 SQL。 3. **CallableStatement**:用于调用...
mysql>INSERT INTO opening_lines(opening_line,author,title) VALUES ('Call me Ishmael.','Herman Melville','Moby-Dick'), ('A screaming comes across the sky.','Thomas Pynchon','Gravity\'s Rainbow'), ('I am an invisible man.','Ralph Ellison','Invisible Man'), ...
] table_or_view_name } <dml_table_source> ::= SELECT FROM ( <dml_statement_with_output_clause> ) [AS] table_alias [ ( column_alias [ ,...n ] ) ] [ WHERE <search_condition> ] [ OPTION ( <query_hint> [ ,...n ] ) ] syntaxsql 复制 -- External tool only syntax INSE...
] table_or_view_name } <dml_table_source> ::= SELECT FROM ( <dml_statement_with_output_clause> ) [AS] table_alias [ ( column_alias [ ,...n ] ) ] [ WHERE <search_condition> ] [ OPTION ( <query_hint> [ ,...n ] ) ] syntaxsql Copie -- External tool only syntax INS...
] table_or_view_name } <dml_table_source> ::= SELECT FROM ( <dml_statement_with_output_clause> ) [AS] table_alias [ ( column_alias [ ,...n ] ) ] [ WHERE <search_condition> ] [ OPTION ( <query_hint> [ ,...n ] ) ] syntaxsql 複製 -- External tool only syntax INSE...
[WITH[RECURSIVE]with_query[,...]]INSERT[IGNORE|OVERWRITE]INTOtable_name[ASalias][(column_name[,...])]{DEFAULTVALUES|VALUES{({expression|DEFAULT}[,...])}[,...]|query}[ONDUPLICATEKEYduplicate_action|ONCONFLICT[conflict_target]conflict_action][RETURNING{*|{output_expression[[AS]output_name]...