publicstaticfinalStringMYSQL_SQL="select * from ( {0}) sel_tab00 limit {1},{2}";
publicstaticfinalStringPOSTGRE_SQL="select * from ( {0}) sel_tab00 limit {2} offset {1}";
publicstaticfinalStringORACLE_SQL="select * from (select row_.*,rownum rownum_ from ({0}) row_ where rownum <= {1}) where rownum_>{2}";
publicstaticfinalStringSQLSERVER_SQL="select * from ( select row_number() over(order by tempColumn) tempRowNumber, * from (select top {1} tempColumn = 0, {0}) t ) tt where tempRowNumber > {2}";
/**
* 获取所有表的SQL
*/
publicstaticfinalStringMYSQL_ALLTABLES_SQL="select distinct table_name from information_schema.columns where table_schema = {0}";
publicstaticfinalStringPOSTGRE__ALLTABLES_SQL="SELECT distinct c.relname AS table_name FROM pg_class c";
publicstaticfinalStringORACLE__ALLTABLES_SQL="select distinct colstable.table_name as table_name from user_tab_cols colstable";
publicstaticfinalStringSQLSERVER__ALLTABLES_SQL="select distinct c.name as table_name from sys.objects c";
/**
* 获取指定表的所有列名
*/
publicstaticfinalStringMYSQL_ALLCOLUMNS_SQL="select column_name from information_schema.columns where table_name = {0} and table_schema = {1}";
publicstaticfinalStringPOSTGRE_ALLCOLUMNS_SQL="select table_name from information_schema.columns where table_name = {0}";
publicstaticfinalStringORACLE_ALLCOLUMNS_SQL="select column_name from all_tab_columns where table_name ={0}";
publicstaticfinalStringSQLSERVER_ALLCOLUMNS_SQL="select name from syscolumns where id={0}";