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挿入を選択に変換

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挿入を選択に変換

次の形式のファイルがあります

INSERT INTO table1(field1,field2,field3) VALUES('values1','value2','value3');
INSERT INTO table1(field1,field2,field3) VALUES('other_values1','other_value2','other_value3');
INSERT INTO table1(field1,field2,field3) VALUES('another_values1','another_value2','another_value3');
INSERT INTO table2(table2_field1,table2_field2,table2_field3,field4) VALUES('table2_values1','table2_value2','table2_value3');
INSERT INTO table2(table2_field1,table2_field2,table2_field3,table2_field4) VALUES('other_table2_values1','other_table2_value2','other_table2_value3');
INSERT INTO table2(table2_field1,table2_field2,table2_field3,table2_field4) VALUES('another_table2_values1','another_table2_value2','another_table2_value3','another_table2_value4');

この出力が欲しい

SELECT * FROM table1 WHERE field1='values1' AND field2='values2' AND field3=='values3';
SELECT * FROM table1 WHERE field1='other_values1' AND field2='other_values2' AND field3=='other_values3';
SELECT * FROM table1 WHERE field1='another_values1' AND field2='another_values2' AND field3=='another_values3';
SELECT * FROM table2 WHERE table2_field1='table2_values1' AND table2_field2='table2_values2' AND table2_field3=='table2_values3' AND table2_field4=='table2_values4';
SELECT * FROM table2 WHERE table2_field1='table2_values1' AND table2_field2='table2_values2' AND table2_field3=='table2_values3' AND table2_field4=='table2_values4';
SELECT * FROM table2 WHERE table2_field1='table2_values1' AND table2_field2='table2_values2' AND table2_field3=='table2_values3' AND table2_field4=='table2_values4';

私がこれまでにしたことは

cat test_inserts |awk -F '[()]' '{print $1 " WHERE "$2 $4}' |sed 's/INSERT INTO /SELECT * FROM /g'

それは私に次のような結果を与えます

SELECT * FROM table1 WHERE field1,field2,field3'values1','value2','value3'
SELECT * FROM table1 WHERE field1,field2,field3'other_values1','other_value2','other_value3'
SELECT * FROM table1 WHERE field1,field2,field3'another_values1','another_value2','another_value3'
SELECT * FROM table2 WHERE table2_field1,table2_field2,table2_field3,field4'table2_values1','table2_value2','table2_value3'
SELECT * FROM table2 WHERE table2_field1,table2_field2,table2_field3,table2_field4'other_table2_values1','other_table2_value2','other_table2_value3'
SELECT * FROM table2 WHERE table2_field1,table2_field2,table2_field3,table2_field4'another_table2_values1','another_table2_value2','another_table2_value3','another_table2_value4'

ベストアンサー1

複雑AWK解決策：

awk -F'[()]' '{ sub(/INSERT INTO */,"",$1); 
                printf "SELECT * FROM %s WHERE ",$1;
                len=split($2, f, ","); split($4, v, ","); 
                for (i=1; i<=len; i++) printf "%s=%s%s", f[i], v[i], (i==len? ";":" AND ");
                print "" 
              }' test_inserts
  • -F'[()]'- 複雑なフィールド区切り記号
  • sub(/INSERT INTO */,"",$1)INSERT INTO- 最初のフィールドからフレーズを削除します（抽出するにはテーブル名前）
  • printf "SELECT * FROM %s WHERE ",$1- 以下を含むSQL文の先頭を印刷します。テーブル名前
  • split($2, f, ",")- 2番目のフィールドを区切り文字に分割して,フィールドを取得する名前（fフィールド名の配列になります）
  • split($4, v, ",")- 4番目のフィールドを区切り文字に分割して,フィールドを取得します。価値（vフィールド値の配列になります）

出力：

SELECT * FROM table1 WHERE field1='values1' AND field2='value2' AND field3='value3';
SELECT * FROM table1 WHERE field1='other_values1' AND field2='other_value2' AND field3='other_value3';
SELECT * FROM table1 WHERE field1='another_values1' AND field2='another_value2' AND field3='another_value3';
SELECT * FROM table2 WHERE table2_field1='table2_values1' AND table2_field2='table2_value2' AND table2_field3='table2_value3' AND field4=;
SELECT * FROM table2 WHERE table2_field1='other_table2_values1' AND table2_field2='other_table2_value2' AND table2_field3='other_table2_value3' AND table2_field4=;
SELECT * FROM table2 WHERE table2_field1='another_table2_values1' AND table2_field2='another_table2_value2' AND table2_field3='another_table2_value3' AND table2_field4='another_table2_value4';

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