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查看“SQL 快速参考”的源代码
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上一节:
SQL_FORMAT()_函数
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SQL_主机
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{{DISPLAYTITLE:SQL 快速参考}}[[Category:SQL 教程|63]] = SQL 快速参考 = {| class="table table-striped table-hover" !width="50%"| SQL 语句 !width="50%"| 语法 |- | AND / OR | SELECT column_name(s) FROM table_name WHERE condition AND|OR condition |- | ALTER TABLE | ALTER TABLE table_name ADD column_name datatype or ALTER TABLE table_name DROP COLUMN column_name |- | AS (alias) | SELECT column_name AS column_alias FROM table_name or SELECT column_name FROM table_name AS table_alias |- | BETWEEN | SELECT column_name(s) FROM table_name WHERE column_name BETWEEN value1 AND value2 |- | CREATE DATABASE | CREATE DATABASE database_name |- | CREATE TABLE | CREATE TABLE table_name ( column_name1 data_type, column_name2 data_type, column_name2 data_type, ... ) |- | CREATE INDEX | CREATE INDEX index_name ON table_name (column_name) or CREATE UNIQUE INDEX index_name ON table_name (column_name) |- | CREATE VIEW | CREATE VIEW view_name AS SELECT column_name(s) FROM table_name WHERE condition |- | DELETE | DELETE FROM table_name WHERE some_column=some_value or DELETE FROM table_name ('''Note:''' Deletes the entire table!!) DELETE * FROM table_name ('''Note:''' Deletes the entire table!!) |- | DROP DATABASE | DROP DATABASE database_name |- | DROP INDEX | DROP INDEX table_name.index_name (SQL Server) DROP INDEX index_name ON table_name (MS Access) DROP INDEX index_name (DB2/Oracle) ALTER TABLE table_name DROP INDEX index_name (MySQL) |- | DROP TABLE | DROP TABLE table_name |- | GROUP BY | SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name operator value GROUP BY column_name |- | HAVING | SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name operator value GROUP BY column_name HAVING aggregate_function(column_name) operator value |- | IN | SELECT column_name(s) FROM table_name WHERE column_name IN (value1,value2,..) |- | INSERT INTO | INSERT INTO table_name VALUES (value1, value2, value3,....) or INSERT INTO table_name (column1, column2, column3,...) VALUES (value1, value2, value3,....) |- | INNER JOIN | SELECT column_name(s) FROM table_name1 INNER JOIN table_name2 ON table_name1.column_name=table_name2.column_name |- | LEFT JOIN | SELECT column_name(s) FROM table_name1 LEFT JOIN table_name2 ON table_name1.column_name=table_name2.column_name |- | RIGHT JOIN | SELECT column_name(s) FROM table_name1 RIGHT JOIN table_name2 ON table_name1.column_name=table_name2.column_name |- | FULL JOIN | SELECT column_name(s) FROM table_name1 FULL JOIN table_name2 ON table_name1.column_name=table_name2.column_name |- | LIKE | SELECT column_name(s) FROM table_name WHERE column_name LIKE pattern |- | ORDER BY | SELECT column_name(s) FROM table_name ORDER BY column_name [ASC|DESC] |- | SELECT | SELECT column_name(s) FROM table_name |- | SELECT * | SELECT * FROM table_name |- | SELECT DISTINCT | SELECT DISTINCT column_name(s) FROM table_name |- | SELECT INTO | SELECT * INTO new_table_name [IN externaldatabase] FROM old_table_name or SELECT column_name(s) INTO new_table_name [IN externaldatabase] FROM old_table_name |- | SELECT TOP | SELECT TOP number|percent column_name(s) FROM table_name |- | TRUNCATE TABLE | TRUNCATE TABLE table_name |- | UNION | SELECT column_name(s) FROM table_name1 UNION SELECT column_name(s) FROM table_name2 |- | UNION ALL | SELECT column_name(s) FROM table_name1 UNION ALL SELECT column_name(s) FROM table_name2 |- | UPDATE | UPDATE table_name SET column1=value, column2=value,... WHERE some_column=some_value |- | WHERE | SELECT column_name(s) FROM table_name WHERE column_name operator value |}
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SQL 快速参考
”。
上一节:
SQL_FORMAT()_函数
下一节:
SQL_主机