Snippets: MySQL: Table Manipulation

20th August 2020 at 2:19pm
Snippets: MySQL
CREATE TABLE table (field1 type1, field2 type2, ...)
CREATE TABLE table (field1 type1 unsigned not null auto_increment, field2 type2, ...)
CREATE TABLE table (field1 type1, field2 type2, ..., INDEX (field))
CREATE TABLE table (field1 type1, field2 type2, ..., PRIMARY KEY (field1))
CREATE TABLE table (field1 type1, field2 type2, ..., PRIMARY KEY (field1, field2))
CREATE TABLE table1 (fk_field1 type1, field2 type2, ...,
  FOREIGN KEY (fk_field1) REFERENCES table2 (t2_fieldA)
    [ON UPDATE] [CASCADE|SET NULL|RESTRICT]
    [ON DELETE] [CASCADE|SET NULL|RESTRICT])
CREATE TABLE table1 (fk_field1 type1, fk_field2 type2, ...,
  FOREIGN KEY (fk_field1, fk_field2) REFERENCES table2 (t2_fieldA, t2_fieldB))
CREATE TABLE table IF NOT EXISTS (...)

CREATE TABLE new_tbl_name LIKE tbl_name
  [SELECT ... FROM tbl_name ...]

CREATE TEMPORARY TABLE table (...)

CREATE table new_table_name as SELECT [ *|column1, column2 ] FROM table_name

DROP TABLE table
DROP TABLE IF EXISTS table
DROP TABLE table1, table2, ...
DROP TEMPORARY TABLE table

ALTER TABLE table MODIFY field1 type1 
ALTER TABLE table MODIFY field1 type1 NOT NULL ... 
ALTER TABLE table CHANGE old_name_field1 new_name_field1 type1
ALTER TABLE table CHANGE old_name_field1 new_name_field1 type1 NOT NULL ...
ALTER TABLE table ALTER field1 SET DEFAULT ...
ALTER TABLE table ALTER field1 DROP DEFAULT
ALTER TABLE table ADD new_name_field1 type1
ALTER TABLE table ADD new_name_field1 type1 FIRST
ALTER TABLE table ADD new_name_field1 type1 AFTER another_field
ALTER TABLE table DROP field1
ALTER TABLE table ADD INDEX (field);
ALTER TABLE table ADD PRIMARY KEY (field);

-- Change field order:
ALTER TABLE table MODIFY field1 type1 FIRST
ALTER TABLE table MODIFY field1 type1 AFTER another_field
ALTER TABLE table CHANGE old_name_field1 new_name_field1 type1 FIRST
ALTER TABLE table CHANGE old_name_field1 new_name_field1 type1 AFTER another_field

ALTER TABLE old_name RENAME new_name;