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29 lines
1.0 KiB
Plaintext
29 lines
1.0 KiB
Plaintext
#
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# MDEV-14012 - sql_mode=Oracle: substr(): treat position 0 as position 1
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#
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SET sql_mode=ORACLE;
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SELECT SUBSTR('abc',2,1),SUBSTR('abc',1,1), SUBSTR('abc',0,1) FROM dual;
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SELECT SUBSTR('abc',2),SUBSTR('abc',1), SUBSTR('abc',0) FROM dual;
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SELECT SUBSTR(null,2,1),SUBSTR(null,1), SUBSTR(null,0) FROM dual;
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SELECT SUBSTR('abc',-2),SUBSTR('abc',-1), SUBSTR('abc',-0) FROM dual;
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SELECT SUBSTR('abc',-2,1),SUBSTR('abc',-1,1), SUBSTR('abc',-0,1) FROM dual;
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SELECT SUBSTR('abc',null) FROM dual;
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SELECT SUBSTR('abc',2,null),SUBSTR('abc',1,null), SUBSTR('abc',0,null) FROM dual;
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SELECT SUBSTR('abc',2,0),SUBSTR('abc',1,0), SUBSTR('abc',0,0) FROM dual;
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create table t1 (c1 varchar(10),start integer, length integer);
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INSERT INTO t1 VALUES ('abc', 1, 1);
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INSERT INTO t1 VALUES ('abc', 0, 1);
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INSERT INTO t1 VALUES (null, 1, 1);
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INSERT INTO t1 VALUES (null, 0, 1);
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select substr(c1,start,length) from t1;
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drop table t1;
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EXPLAIN EXTENDED SELECT SUBSTR('abc',2,1) ;
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CREATE VIEW v1 AS SELECT SUBSTR('abc',2,1) ;
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SHOW CREATE VIEW v1;
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SELECT * FROM v1;
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DROP VIEW v1;
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