2019獨角獸企業重金招聘Python工程師標準>>> 
ALTER?[ONLINE|OFFLINE]?[IGNORE]?TABLE?tbl_name[alter_specification?[,?alter_specification]?...][partition_options]alter_specification:????table_options|?ADD?[COLUMN]?col_name?column_definition[FIRST?|?AFTER?col_name?]|?ADD?[COLUMN]?(col_name?column_definition,...)|?ADD?{INDEX|KEY}?[index_name][index_type]?(index_col_name,...)?[index_option]?...|?ADD?[CONSTRAINT?[symbol]]?PRIMARY?KEY[index_type]?(index_col_name,...)?[index_option]?...|?ADD?[CONSTRAINT?[symbol]]UNIQUE?[INDEX|KEY]?[index_name][index_type]?(index_col_name,...)?[index_option]?...|?ADD?FULLTEXT?[INDEX|KEY]?[index_name](index_col_name,...)?[index_option]?...|?ADD?SPATIAL?[INDEX|KEY]?[index_name](index_col_name,...)?[index_option]?...|?ADD?[CONSTRAINT?[symbol]]FOREIGN?KEY?[index_name]?(index_col_name,...)????????reference_definition|?ALGORITHM?[=]?{DEFAULT|INPLACE|COPY}|?ALTER?[COLUMN]?col_name?{SET?DEFAULT?literal?|?DROP?DEFAULT}|?CHANGE?[COLUMN]?old_col_name?new_col_name?column_definition[FIRST|AFTER?col_name]|?LOCK?[=]?{DEFAULT|NONE|SHARED|EXCLUSIVE}|?MODIFY?[COLUMN]?col_name?column_definition[FIRST?|?AFTER?col_name]|?DROP?[COLUMN]?col_name|?DROP?PRIMARY?KEY|?DROP?{INDEX|KEY}?index_name|?DROP?FOREIGN?KEY?fk_symbol|?DISABLE?KEYS|?ENABLE?KEYS|?RENAME?[TO|AS]?new_tbl_name|?ORDER?BY?col_name?[,?col_name]?...|?CONVERT?TO?CHARACTER?SET?charset_name?[COLLATE?collation_name]|?[DEFAULT]?CHARACTER?SET?[=]?charset_name?[COLLATE?[=]?collation_name]|?DISCARD?TABLESPACE|?IMPORT?TABLESPACE|?FORCE|?ADD?PARTITION?(partition_definition)|?DROP?PARTITION?partition_names|?TRUNCATE?PARTITION?{partition_names?|?ALL}|?COALESCE?PARTITION?number|?REORGANIZE?PARTITION?partition_names?INTO?(partition_definitions)|?EXCHANGE?PARTITION?partition_name?WITH?TABLE?tbl_name|?ANALYZE?PARTITION?{partition_names?|?ALL}|?CHECK?PARTITION?{partition_names?|?ALL}|?OPTIMIZE?PARTITION?{partition_names?|?ALL}|?REBUILD?PARTITION?{partition_names?|?ALL}|?REPAIR?PARTITION?{partition_names?|?ALL}|?REMOVE?PARTITIONINGindex_col_name:????col_name?[(length)]?[ASC?|?DESC]index_type:USING?{BTREE?|?HASH}index_option:KEY_BLOCK_SIZE?[=]?value|?index_type|?WITH?PARSER?parser_name|?COMMENT?'string'table_options:????table_option?[[,]?table_option]?...??(see?CREATE?TABLE?options)partition_options:(see?CREATE?TABLE?options)
