union.sql
上传用户:blenddy
上传日期:2007-01-07
资源大小:6495k
文件大小:1k
- --
- -- union.sql
- --
- -- Simple UNION constructs
- SELECT 1 AS two UNION SELECT 2;
- SELECT 1 AS one UNION SELECT 1;
- SELECT 1 AS two UNION ALL SELECT 2;
- SELECT 1 AS two UNION ALL SELECT 1;
- SELECT 1 AS three UNION SELECT 2 UNION SELECT 3;
- SELECT 1 AS two UNION SELECT 2 UNION SELECT 2;
- SELECT 1 AS three UNION SELECT 2 UNION ALL SELECT 2;
- SELECT 1.1 AS two UNION SELECT 2.2;
- -- Mixed types
- SELECT 1.1 AS two UNION SELECT 2;
- SELECT 1 AS two UNION SELECT 2.2;
- SELECT 1 AS one UNION SELECT 1.1;
- SELECT 1.1 AS two UNION ALL SELECT 2;
- SELECT 1 AS two UNION ALL SELECT 1;
- SELECT 1 AS three UNION SELECT 2 UNION SELECT 3;
- SELECT 1 AS two UNION SELECT 2 UNION SELECT 2;
- SELECT 1 AS three UNION SELECT 2 UNION ALL SELECT 2;
- --
- -- Try testing from tables...
- --
- SELECT f1 AS five FROM FLOAT8_TBL
- UNION
- SELECT f1 FROM FLOAT8_TBL;
- SELECT f1 AS ten FROM FLOAT8_TBL
- UNION ALL
- SELECT f1 FROM FLOAT8_TBL;
- SELECT f1 AS nine FROM FLOAT8_TBL
- UNION
- SELECT f1 FROM INT4_TBL;
- SELECT f1 AS ten FROM FLOAT8_TBL
- UNION ALL
- SELECT f1 FROM INT4_TBL;
- SELECT f1 AS five FROM FLOAT8_TBL
- WHERE f1 BETWEEN -1e6 AND 1e6
- UNION
- SELECT f1 FROM INT4_TBL
- WHERE f1 BETWEEN 0 AND 1000000;
- SELECT f1 AS five FROM VARCHAR_TBL
- UNION
- SELECT f1 FROM CHAR_TBL;
- SELECT f1 AS three FROM VARCHAR_TBL
- UNION
- SELECT TRIM(TRAILING FROM f1) FROM CHAR_TBL;
- SELECT f1 AS eight FROM VARCHAR_TBL
- UNION ALL
- SELECT f1 FROM CHAR_TBL;
- SELECT f1 AS five FROM TEXT_TBL
- UNION
- SELECT f1 FROM VARCHAR_TBL
- UNION
- SELECT TRIM(TRAILING FROM f1) FROM CHAR_TBL;