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regexp_instr

Returns the position within string where the N'th match of the POSIX regular expression pattern occurs, or zero if there is no such match; see Section 9.7.3.

English manual coverage begins with PostgreSQL 7.1. Source history and runtime observations have their own recorded version boundaries.

Reading PG 18·Select a recorded version

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字符串函数和操作符
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en
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table-new
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functions-string.html
prose only
false

Definition PG 18

Returns the position within string where the N'th match of the POSIX regular expression pattern occurs, or zero if there is no such match; see Section 9.7.3.

Signatures and overloads

regexp_instr ( string text, pattern text [, start integer [, N integer [, endoption integer [, flags text [, subexpr integer] ] ] ] ] ) → integer → integer
Returns the position within string where the N'th match of the POSIX regular expression pattern occurs, or zero if there is no such match; see Section 9.7.3.

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Complete source facts

documentation revision

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Source references

Full definition and evidence JSON

Definition sources

center · PostgreSQL 18 · wiki-repair-20261023:14e4ebff0f359a5fa9ca863996e7736cf10e4f4e1f17ed555146494b9aeab946

Text language: en · wiki-repair-20261023:14e4ebff0f359a5fa9ca863996e7736cf10e4f4e1f17ed555146494b9aeab946