select.sql
上传用户:blenddy
上传日期:2007-01-07
资源大小:6495k
文件大小:2k
- --
- -- btree index
- -- awk '{if($1<10){print;}else{next;}}' onek.data | sort +0n -1
- --
- SELECT onek.* WHERE onek.unique1 < 10;
- --
- -- awk '{if($1<20){print $1,$14;}else{next;}}' onek.data | sort +0nr -1
- --
- SELECT onek.unique1, onek.stringu1
- WHERE onek.unique1 < 20
- ORDER BY unique1 using >;
- --
- -- awk '{if($1>980){print $1,$14;}else{next;}}' onek.data | sort +1d -2
- --
- SELECT onek.unique1, onek.stringu1
- WHERE onek.unique1 > 980
- ORDER BY stringu1 using <;
-
- --
- -- awk '{if($1>980){print $1,$16;}else{next;}}' onek.data |
- -- sort +1d -2 +0nr -1
- --
- SELECT onek.unique1, onek.string4
- WHERE onek.unique1 > 980
- ORDER BY string4 using <, unique1 using >;
-
- --
- -- awk '{if($1>980){print $1,$16;}else{next;}}' onek.data |
- -- sort +1dr -2 +0n -1
- --
- SELECT onek.unique1, onek.string4
- WHERE onek.unique1 > 980
- ORDER BY string4 using >, unique1 using <;
-
- --
- -- awk '{if($1<20){print $1,$16;}else{next;}}' onek.data |
- -- sort +0nr -1 +1d -2
- --
- SELECT onek.unique1, onek.string4
- WHERE onek.unique1 < 20
- ORDER BY unique1 using >, string4 using <;
- --
- -- awk '{if($1<20){print $1,$16;}else{next;}}' onek.data |
- -- sort +0n -1 +1dr -2
- --
- SELECT onek.unique1, onek.string4
- WHERE onek.unique1 < 20
- ORDER BY unique1 using <, string4 using >;
- --
- -- partial btree index
- -- awk '{if($1<10){print $0;}else{next;}}' onek.data | sort +0n -1
- --
- --SELECT onek2.* WHERE onek2.unique1 < 10;
- --
- -- partial btree index
- -- awk '{if($1<20){print $1,$14;}else{next;}}' onek.data | sort +0nr -1
- --
- --SELECT onek2.unique1, onek2.stringu1
- -- WHERE onek2.unique1 < 20
- -- ORDER BY unique1 using >;
- --
- -- awk '{if($1>980){print $1,$14;}else{next;}}' onek.data | sort +1d -2
- --
- --SELECT onek2.unique1, onek2.stringu1
- -- WHERE onek2.unique1 > 980
- -- ORDER BY stringu1 using <;
-
- SELECT two, stringu1, ten, string4
- INTO TABLE tmp
- FROM onek;
- --
- -- awk '{print $1,$2;}' person.data |
- -- awk '{if(NF!=2){print $3,$2;}else{print;}}' - emp.data |
- -- awk '{if(NF!=2){print $3,$2;}else{print;}}' - student.data |
- -- awk 'BEGIN{FS=" ";}{if(NF!=2){print $4,$5;}else{print;}}' - stud_emp.data
- --
- -- SELECT name, age FROM person*; ??? check if different
- SELECT p.name, p.age FROM person* p;
- --
- -- awk '{print $1,$2;}' person.data |
- -- awk '{if(NF!=2){print $3,$2;}else{print;}}' - emp.data |
- -- awk '{if(NF!=2){print $3,$2;}else{print;}}' - student.data |
- -- awk 'BEGIN{FS=" ";}{if(NF!=1){print $4,$5;}else{print;}}' - stud_emp.data |
- -- sort +1nr -2
- --
- SELECT p.name, p.age FROM person* p ORDER BY age using >, name;